1
|
Kuntz M, Dimnet L, Pullara S, Moyet L, Rolland N. The Main Functions of Plastids. Methods Mol Biol 2024; 2776:89-106. [PMID: 38502499 DOI: 10.1007/978-1-0716-3726-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Plastids are semi-autonomous organelles like mitochondria and derive from a cyanobacterial ancestor that was engulfed by a host cell. During evolution, they have recruited proteins originating from the nuclear genome, and only parts of their ancestral metabolic properties were conserved and optimized to limit functional redundancy with other cell compartments. Furthermore, large disparities in metabolic functions exist among various types of plastids, and the characterization of their various metabolic properties is far from being accomplished. In this review, we provide an overview of the main functions, known to be achieved by plastids or shared by plastids and other compartments of the cell. In short, plastids appear at the heart of all main plant functions.
Collapse
Affiliation(s)
- Marcel Kuntz
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France.
| | - Laura Dimnet
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France
| | - Sara Pullara
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France
| | - Lucas Moyet
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France
| | - Norbert Rolland
- Laboratoire de Physiologie Cellulaire et Végétale, CNRS, CEA, INRAE, Univ. Grenoble Alpes, IRIG, CEA Grenoble, Grenoble, France
| |
Collapse
|
2
|
da Fonseca-Pereira P, Monteiro-Batista RDC, Araújo WL, Nunes-Nesi A. Harnessing enzyme cofactors and plant metabolism: an essential partnership. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:1014-1036. [PMID: 36861364 DOI: 10.1111/tpj.16167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/18/2023] [Accepted: 02/25/2023] [Indexed: 05/31/2023]
Abstract
Cofactors are fundamental to the catalytic activity of enzymes. Additionally, because plants are a critical source of several cofactors (i.e., including their vitamin precursors) within the context of human nutrition, there have been several studies aiming to understand the metabolism of coenzymes and vitamins in plants in detail. For example, compelling evidence has been brought forth regarding the role of cofactors in plants; specifically, it is becoming increasingly clear that an adequate supply of cofactors in plants directly affects their development, metabolism, and stress responses. Here, we review the state-of-the-art knowledge on the significance of coenzymes and their precursors with regard to general plant physiology and discuss the emerging functions attributed to them. Furthermore, we discuss how our understanding of the complex relationship between cofactors and plant metabolism can be used for crop improvement.
Collapse
Affiliation(s)
- Paula da Fonseca-Pereira
- National Institute of Science and Technology on Plant Physiology under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Rita de Cássia Monteiro-Batista
- National Institute of Science and Technology on Plant Physiology under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Wagner L Araújo
- National Institute of Science and Technology on Plant Physiology under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Adriano Nunes-Nesi
- National Institute of Science and Technology on Plant Physiology under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| |
Collapse
|
3
|
Sánchez-Rodríguez R, Tezze C, Agnellini AHR, Angioni R, Venegas FC, Cioccarelli C, Munari F, Bertoldi N, Canton M, Desbats MA, Salviati L, Gissi R, Castegna A, Soriano ME, Sandri M, Scorrano L, Viola A, Molon B. OPA1 drives macrophage metabolism and functional commitment via p65 signaling. Cell Death Differ 2023; 30:742-752. [PMID: 36307526 PMCID: PMC9984365 DOI: 10.1038/s41418-022-01076-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 09/26/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022] Open
Abstract
Macrophages are essential players for the host response against pathogens, regulation of inflammation and tissue regeneration. The wide range of macrophage functions rely on their heterogeneity and plasticity that enable a dynamic adaptation of their responses according to the surrounding environmental cues. Recent studies suggest that metabolism provides synergistic support for macrophage activation and elicitation of desirable immune responses; however, the metabolic pathways orchestrating macrophage activation are still under scrutiny. Optic atrophy 1 (OPA1) is a mitochondria-shaping protein controlling mitochondrial fusion, cristae biogenesis and respiration; clear evidence shows that the lack or dysfunctional activity of this protein triggers the accumulation of metabolic intermediates of the TCA cycle. In this study, we show that OPA1 has a crucial role in macrophage activation. Selective Opa1 deletion in myeloid cells impairs M1-macrophage commitment. Mechanistically, Opa1 deletion leads to TCA cycle metabolite accumulation and defective NF-κB signaling activation. In an in vivo model of muscle regeneration upon injury, Opa1 knockout macrophages persist within the damaged tissue, leading to excess collagen deposition and impairment in muscle regeneration. Collectively, our data indicate that OPA1 is a key metabolic driver of macrophage functions.
Collapse
Affiliation(s)
- Ricardo Sánchez-Rodríguez
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Caterina Tezze
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine, 35129, Padova, Italy
| | | | - Roberta Angioni
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Francisca C Venegas
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Chiara Cioccarelli
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Fabio Munari
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Nicole Bertoldi
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Marcella Canton
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
| | - Maria Andrea Desbats
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
- Clinical Genetics Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Leonardo Salviati
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
- Clinical Genetics Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Rosanna Gissi
- Department of Biosciences, Biotechnologies and Environment, 70125, Bari, Italy
| | - Alessandra Castegna
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy
- Department of Biosciences, Biotechnologies and Environment, 70125, Bari, Italy
| | | | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
- Veneto Institute of Molecular Medicine, 35129, Padova, Italy
- Department of Medicine, McGill University, Montreal, Montreal (Quebec), H4A 3J1, Canada
| | - Luca Scorrano
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Antonella Viola
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy.
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy.
| | - Barbara Molon
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy.
- Istituto di Ricerca Pediatrica IRP- Fondazione Città della Speranza, 35127, Padova, Italy.
| |
Collapse
|
4
|
Palmieri F, Monné M, Fiermonte G, Palmieri L. Mitochondrial transport and metabolism of the vitamin B-derived cofactors thiamine pyrophosphate, coenzyme A, FAD and NAD + , and related diseases: A review. IUBMB Life 2022; 74:592-617. [PMID: 35304818 PMCID: PMC9311062 DOI: 10.1002/iub.2612] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 01/19/2023]
Abstract
Multiple mitochondrial matrix enzymes playing key roles in metabolism require cofactors for their action. Due to the high impermeability of the mitochondrial inner membrane, these cofactors need to be synthesized within the mitochondria or be imported, themselves or one of their precursors, into the organelles. Transporters belonging to the protein family of mitochondrial carriers have been identified to transport the coenzymes: thiamine pyrophosphate, coenzyme A, FAD and NAD+ , which are all structurally similar to nucleotides and derived from different B-vitamins. These mitochondrial cofactors bind more or less tightly to their enzymes and, after having been involved in a specific reaction step, are regenerated, spontaneously or by other enzymes, to return to their active form, ready for the next catalysis round. Disease-causing mutations in the mitochondrial cofactor carrier genes compromise not only the transport reaction but also the activity of all mitochondrial enzymes using that particular cofactor and the metabolic pathways in which the cofactor-dependent enzymes are involved. The mitochondrial transport, metabolism and diseases of the cofactors thiamine pyrophosphate, coenzyme A, FAD and NAD+ are the focus of this review.
Collapse
Affiliation(s)
- Ferdinando Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy.,CNR Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies (IBIOM), Bari, Italy
| | - Magnus Monné
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy.,Department of Sciences, University of Basilicata, Potenza, Italy
| | - Giuseppe Fiermonte
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy.,CNR Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies (IBIOM), Bari, Italy
| | - Luigi Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy.,CNR Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies (IBIOM), Bari, Italy
| |
Collapse
|
5
|
The J2-Immortalized Murine Macrophage Cell Line Displays Phenotypical and Metabolic Features of Primary BMDMs in Their M1 and M2 Polarization State. Cancers (Basel) 2021; 13:cancers13215478. [PMID: 34771641 PMCID: PMC8582589 DOI: 10.3390/cancers13215478] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Evidence of the role of macrophages in promoting cancer progression has prompted scientists to investigate innate immune cell function in order to identify targetable checkpoint for reverting the protumoral functions of macrophages. Primary cultures isolated from mice necessary to investigate the mechanisms mediating immune cell activation require expensive and time-consuming breeding and housing of mice strains. We obtained an in-house generated immortalized macrophage cell line from BMDMs. In the present study, we characterize this cell line both from a functional and metabolic point of view, comparing the different parameters to those obtained from the primary counterpart. Our results indicate that classically and alternatively immortalized macrophages display similar phenotypical, metabolic and functional features to primary cells polarized in the same way, validating their use for in vitro studies relevant to the understanding and targeting of immune cell functions within tumors. Abstract Macrophages are immune cells that are important for the development of the defensive front line of the innate immune system. Following signal recognition, macrophages undergo activation toward specific functional states, consisting not only in the acquisition of specific features but also of peculiar metabolic programs associated with each function. For these reasons, macrophages are often isolated from mice to perform cellular assays to study the mechanisms mediating immune cell activation. This requires expensive and time-consuming breeding and housing of mice strains. To overcome this issue, we analyzed an in-house J2-generated immortalized macrophage cell line from BMDMs, both from a functional and metabolic point of view. By assaying the intracellular and extracellular metabolism coupled with the phenotypic features of immortalized versus primary BMDMs, we concluded that classically and alternatively immortalized macrophages display similar phenotypical, metabolic and functional features compared to primary cells polarized in the same way. Our study validates the use of this immortalized cell line as a suitable model with which to evaluate in vitro how perturbations can influence the phenotypical and functional features of murine macrophages.
Collapse
|
6
|
Fitzpatrick TB, Noordally Z. Of clocks and coenzymes in plants: intimately connected cycles guiding central metabolism? THE NEW PHYTOLOGIST 2021; 230:416-432. [PMID: 33264424 DOI: 10.1111/nph.17127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/03/2020] [Indexed: 06/12/2023]
Abstract
Plant fitness is a measure of the capacity of a plant to survive and reproduce in its particular environment. It is inherently dependent on plant health. Molecular timekeepers like the circadian clock enhance fitness due to their ability to coordinate biochemical and physiological processes with the environment on a daily basis. Central metabolism underlies these events and it is well established that diel metabolite adjustments are intimately and reciprocally associated with the genetically encoded clock. Thus, metabolic pathway activities are time-of-day regulated. Metabolite rhythms are driven by enzymes, a major proportion of which rely on organic coenzymes to facilitate catalysis. The B vitamin complex is the key provider of coenzymes in all organisms. Emerging evidence suggests that B vitamin levels themselves undergo daily oscillations in animals but has not been studied in any depth in plants. Moreover, it is rarely considered that daily rhythmicity in coenzyme levels may dictate enzyme activity levels and therefore metabolite levels. Here we put forward the proposal that B-vitamin-derived coenzyme rhythmicity is intertwined with metabolic and clock derived rhythmicity to achieve a tripartite homeostasis integrated into plant fitness.
Collapse
Affiliation(s)
- Teresa B Fitzpatrick
- Vitamins and Environmental Stress Responses in Plants, Department of Botany and Plant Biology, University of Geneva, Geneva, 1211, Switzerland
| | - Zeenat Noordally
- Vitamins and Environmental Stress Responses in Plants, Department of Botany and Plant Biology, University of Geneva, Geneva, 1211, Switzerland
| |
Collapse
|
7
|
Menga A, Serra M, Todisco S, Riera‐Domingo C, Ammarah U, Ehling M, Palmieri EM, Di Noia MA, Gissi R, Favia M, Pierri CL, Porporato PE, Castegna A, Mazzone M. Glufosinate constrains synchronous and metachronous metastasis by promoting anti-tumor macrophages. EMBO Mol Med 2020; 12:e11210. [PMID: 32885605 PMCID: PMC7539200 DOI: 10.15252/emmm.201911210] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 01/19/2023] Open
Abstract
Glutamine synthetase (GS) generates glutamine from glutamate and controls the release of inflammatory mediators. In macrophages, GS activity, driven by IL10, associates to the acquisition of M2-like functions. Conditional deletion of GS in macrophages inhibits metastasis by boosting the formation of anti-tumor, M1-like, tumor-associated macrophages (TAMs). From this basis, we evaluated the pharmacological potential of GS inhibitors in targeting metastasis, identifying glufosinate as a specific human GS inhibitor. Glufosinate was tested in both cultured macrophages and on mice bearing metastatic lung, skin and breast cancer. We found that glufosinate rewires macrophages toward an M1-like phenotype both at the primary tumor and metastatic site, countering immunosuppression and promoting vessel sprouting. This was also accompanied to a reduction in cancer cell intravasation and extravasation, leading to synchronous and metachronous metastasis growth inhibition, but no effects on primary tumor growth. Glufosinate treatment was well-tolerated, without liver and brain toxicity, nor hematopoietic defects. These results identify GS as a druggable enzyme to rewire macrophage functions and highlight the potential of targeting metabolic checkpoints in macrophages to treat cancer metastasis.
Collapse
Affiliation(s)
- Alessio Menga
- Laboratory of Tumor Inflammation and AngiogenesisCenter for Cancer Biology (CCB)VIBLeuvenBelgium
- Laboratory of Tumor Inflammation and AngiogenesisDepartment of OncologyKU LeuvenLeuvenBelgium
- Department of Molecular Biotechnology and Health ScienceMolecular Biotechnology CentreUniversity of TorinoTorinoItaly
- Department of Biosciences, Biotechnologies and BiopharmaceuticsUniversity of BariBariItaly
| | - Marina Serra
- Laboratory of Tumor Inflammation and AngiogenesisCenter for Cancer Biology (CCB)VIBLeuvenBelgium
- Laboratory of Tumor Inflammation and AngiogenesisDepartment of OncologyKU LeuvenLeuvenBelgium
| | - Simona Todisco
- Department of SciencesUniversity of BasilicataPotenzaItaly
| | - Carla Riera‐Domingo
- Laboratory of Tumor Inflammation and AngiogenesisCenter for Cancer Biology (CCB)VIBLeuvenBelgium
- Laboratory of Tumor Inflammation and AngiogenesisDepartment of OncologyKU LeuvenLeuvenBelgium
| | - Ummi Ammarah
- Department of Molecular Biotechnology and Health ScienceMolecular Biotechnology CentreUniversity of TorinoTorinoItaly
| | - Manuel Ehling
- Laboratory of Tumor Inflammation and AngiogenesisCenter for Cancer Biology (CCB)VIBLeuvenBelgium
- Laboratory of Tumor Inflammation and AngiogenesisDepartment of OncologyKU LeuvenLeuvenBelgium
| | - Erika M Palmieri
- Cancer & Inflammation ProgramNational Cancer InstituteFrederickMDUSA
| | | | - Rosanna Gissi
- Department of Biosciences, Biotechnologies and BiopharmaceuticsUniversity of BariBariItaly
| | - Maria Favia
- Department of Biosciences, Biotechnologies and BiopharmaceuticsUniversity of BariBariItaly
| | - Ciro L Pierri
- Department of Biosciences, Biotechnologies and BiopharmaceuticsUniversity of BariBariItaly
| | - Paolo E Porporato
- Department of Molecular Biotechnology and Health ScienceMolecular Biotechnology CentreUniversity of TorinoTorinoItaly
| | - Alessandra Castegna
- Department of Biosciences, Biotechnologies and BiopharmaceuticsUniversity of BariBariItaly
- IBIOM‐CNRInstitute of Biomembranes, Bioenergetics and Molecular BiotechnologiesNational Research CouncilBariItaly
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and AngiogenesisCenter for Cancer Biology (CCB)VIBLeuvenBelgium
- Laboratory of Tumor Inflammation and AngiogenesisDepartment of OncologyKU LeuvenLeuvenBelgium
- Department of Molecular Biotechnology and Health ScienceMolecular Biotechnology CentreUniversity of TorinoTorinoItaly
| |
Collapse
|
8
|
Characterization of In Vivo Function(s) of Members of the Plant Mitochondrial Carrier Family. Biomolecules 2020; 10:biom10091226. [PMID: 32846873 PMCID: PMC7565455 DOI: 10.3390/biom10091226] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 02/06/2023] Open
Abstract
Although structurally related, mitochondrial carrier family (MCF) proteins catalyze the specific transport of a range of diverse substrates including nucleotides, amino acids, dicarboxylates, tricarboxylates, cofactors, vitamins, phosphate and H+. Despite their name, they do not, however, always localize to the mitochondria, with plasma membrane, peroxisomal, chloroplast and thylakoid and endoplasmic reticulum localizations also being reported. The existence of plastid-specific MCF proteins is suggestive that the evolution of these proteins occurred after the separation of the green lineage. That said, plant-specific MCF proteins are not all plastid-localized, with members also situated at the endoplasmic reticulum and plasma membrane. While by no means yet comprehensive, the in vivo function of a wide range of these transporters is carried out here, and we discuss the employment of genetic variants of the MCF as a means to provide insight into their in vivo function complementary to that obtained from studies following their reconstitution into liposomes.
Collapse
|
9
|
Peroxisomal Cofactor Transport. Biomolecules 2020; 10:biom10081174. [PMID: 32806597 PMCID: PMC7463629 DOI: 10.3390/biom10081174] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 12/20/2022] Open
Abstract
Peroxisomes are eukaryotic organelles that are essential for growth and development. They are highly metabolically active and house many biochemical reactions, including lipid metabolism and synthesis of signaling molecules. Most of these metabolic pathways are shared with other compartments, such as Endoplasmic reticulum (ER), mitochondria, and plastids. Peroxisomes, in common with all other cellular organelles are dependent on a wide range of cofactors, such as adenosine 5′-triphosphate (ATP), Coenzyme A (CoA), and nicotinamide adenine dinucleotide (NAD). The availability of the peroxisomal cofactor pool controls peroxisome function. The levels of these cofactors available for peroxisomal metabolism is determined by the balance between synthesis, import, export, binding, and degradation. Since the final steps of cofactor synthesis are thought to be located in the cytosol, cofactors must be imported into peroxisomes. This review gives an overview about our current knowledge of the permeability of the peroxisomal membrane with the focus on ATP, CoA, and NAD. Several members of the mitochondrial carrier family are located in peroxisomes, catalyzing the transfer of these organic cofactors across the peroxisomal membrane. Most of the functions of these peroxisomal cofactor transporters are known from studies in yeast, humans, and plants. Parallels and differences between the transporters in the different organisms are discussed here.
Collapse
|
10
|
Fernie AR, Cavalcanti JHF, Nunes-Nesi A. Metabolic Roles of Plant Mitochondrial Carriers. Biomolecules 2020; 10:E1013. [PMID: 32650612 PMCID: PMC7408384 DOI: 10.3390/biom10071013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 02/07/2023] Open
Abstract
Mitochondrial carriers (MC) are a large family (MCF) of inner membrane transporters displaying diverse, yet often redundant, substrate specificities, as well as differing spatio-temporal patterns of expression; there are even increasing examples of non-mitochondrial subcellular localization. The number of these six trans-membrane domain proteins in sequenced plant genomes ranges from 39 to 141, rendering the size of plant families larger than that found in Saccharomyces cerevisiae and comparable with Homo sapiens. Indeed, comparison of plant MCs with those from these better characterized species has been highly informative. Here, we review the most recent comprehensive studies of plant MCFs, incorporating the torrent of genomic data emanating from next-generation sequencing techniques. As such we present a more current prediction of the substrate specificities of these carriers as well as review the continuing quest to biochemically characterize this feature of the carriers. Taken together, these data provide an important resource to guide direct genetic studies aimed at addressing the relevance of these vital carrier proteins.
Collapse
Affiliation(s)
- Alisdair R. Fernie
- Max-Planck-Instiute of Molecular Plant Physiology, 14476 Postdam-Golm, Germany
| | - João Henrique F. Cavalcanti
- Instituto de Educação, Agricultura e Ambiente, Universidade Federal do Amazonas, Humaitá 69800-000, Amazonas, Brazil;
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa 36570-900, Minas Gerais, Brazil
| |
Collapse
|
11
|
Charton L, Plett A, Linka N. Plant peroxisomal solute transporter proteins. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2019; 61:817-835. [PMID: 30761734 PMCID: PMC6767901 DOI: 10.1111/jipb.12790] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/11/2019] [Indexed: 05/18/2023]
Abstract
Plant peroxisomes are unique subcellular organelles which play an indispensable role in several key metabolic pathways, including fatty acid β-oxidation, photorespiration, and degradation of reactive oxygen species. The compartmentalization of metabolic pathways into peroxisomes is a strategy for organizing the metabolic network and improving pathway efficiency. An important prerequisite, however, is the exchange of metabolites between peroxisomes and other cell compartments. Since the first studies in the 1970s scientists contributed to understanding how solutes enter or leave this organelle. This review gives an overview about our current knowledge of the solute permeability of peroxisomal membranes described in plants, yeast, mammals and other eukaryotes. In general, peroxisomes contain in their bilayer membrane specific transporters for hydrophobic fatty acids (ABC transporter) and large cofactor molecules (carrier for ATP, NAD and CoA). Smaller solutes with molecular masses below 300-400 Da, like the organic acids malate, oxaloacetate, and 2-oxoglutarate, are shuttled via non-selective channels across the peroxisomal membrane. In comparison to yeast, human, mammals and other eukaryotes, the function of these known peroxisomal transporters and channels in plants are discussed in this review.
Collapse
Affiliation(s)
- Lennart Charton
- Institute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS)Heinrich Heine UniversityUniversitätsstrasse 140225 DüsseldorfGermany
| | - Anastasija Plett
- Institute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS)Heinrich Heine UniversityUniversitätsstrasse 140225 DüsseldorfGermany
| | - Nicole Linka
- Institute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS)Heinrich Heine UniversityUniversitätsstrasse 140225 DüsseldorfGermany
| |
Collapse
|
12
|
Liu J, Li J, Liu Y, Shin HD, Ledesma-Amaro R, Du G, Chen J, Liu L. Synergistic Rewiring of Carbon Metabolism and Redox Metabolism in Cytoplasm and Mitochondria of Aspergillus oryzae for Increased l-Malate Production. ACS Synth Biol 2018; 7:2139-2147. [PMID: 30092627 DOI: 10.1021/acssynbio.8b00130] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
l-Malate is an important platform chemical that has extensive applications in the food, feed, and wine industries. Here, we synergistically engineered the carbon metabolism and redox metabolism in the cytosol and mitochondria of a previously engineered Aspergillus oryzae to further improve the l-malate titer and decrease the byproduct succinate concentration. First, the accumulation of the intermediate pyruvate was eliminated by overexpressing a pyruvate carboxylase from Rhizopus oryzae in the cytosol and mitochondria of A. oryzae, and consequently, the l-malate titer increased 7.5%. Then, malate synthesis via glyoxylate bypass in the mitochondria was enhanced, and citrate synthase in the oxidative TCA cycle was downregulated by RNAi, enhancing the l-malate titer by 10.7%. Next, the exchange of byproducts (succinate and fumarate) between the cytosol and mitochondria was regulated by the expression of a dicarboxylate carrier Sfc1p from Saccharomyces cerevisiae in the mitochondria, which increased l-malate titer 3.5% and decreased succinate concentration 36.8%. Finally, an NADH oxidase from Lactococcus lactis was overexpressed to decrease the NADH/NAD+ ratio, and the engineered A. oryzae strain produced 117.2 g/L l-malate and 3.8 g/L succinate, with an l-malate yield of 0.9 g/g corn starch and a productivity of 1.17 g/L/h. Our results showed that synergistic engineering of the carbon and redox metabolisms in the cytosol and mitochondria of A. oryzae effectively increased the l-malate titer, while simultaneously decreasing the concentration of the byproduct succinate. The strategies used in our work may be useful for the metabolic engineering of fungi to produce other industrially important chemicals.
Collapse
Affiliation(s)
- Jingjing Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Jianghua Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Yanfeng Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Hyun-dong Shin
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | | | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Jian Chen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
13
|
Guo P, Qi YP, Huang WL, Yang LT, Huang ZR, Lai NW, Chen LS. Aluminum-responsive genes revealed by RNA-Seq and related physiological responses in leaves of two Citrus species with contrasting aluminum-tolerance. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 158:213-222. [PMID: 29704792 DOI: 10.1016/j.ecoenv.2018.04.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/16/2018] [Accepted: 04/18/2018] [Indexed: 05/25/2023]
Abstract
Little is known about the physiological and molecular responses of leaves to aluminum (Al)-toxicity. Seedlings of Al-intolerant Citrus grandis and Al-tolerant Citrus sinensis were supplied daily with nutrient solution containing 0 mM (control) and 1.0 mM (Al-toxicity) AlCl3·6H2O for 18 weeks. We found that Al-treatment only decreased CO2 assimilation in C. grandis leaves, and that the Al-induced alterations of gene expression profiles were less in C. sinensis leaves than those in C. grandis leaves, indicating that C. sinensis seedlings were more tolerant to Al-toxicity than C. grandis ones. Al concentration was similar between Al-treated C. sinensis and C. grandis roots, but it was higher in Al-treated C. grandis stems and leaves than that in Al-treated C. sinensis stems and leaves. Al-treated C. sinensis seedlings accumulated relatively more Al in roots and transported relatively little Al to shoots. This might be responsible for the higher Al-tolerance of C. sinensis. Further analysis showed that the following several aspects might account for the higher Al-tolerance of C. sinensis, including: (a) Al-treated C. sinensis leaves had higher capacity to maintain the homeostasis of energy and phosphate, the stability of lipid composition and the integrity of cell wall than did Al-treated C. grandis leaves; (b) Al-triggered production of reactive oxygen species (ROS) and the other cytotoxic compounds was less in Al-treated C. sinensis leaves than that in Al-treated C. grandis leaves, because Al-toxicity decreased CO2 assimilation only in C. grandis leaves; accordingly, more upregulated genes involved in the detoxifications of ROS, aldehydes and methylglyoxal were identified in Al-treated C. grandis leaves; in addition, flavonoid concentration was increased only in Al-treated C. grandis leaves; (c) Al-treated C. sinensis leaves could keep a better balance between protein phosphorylation and dephosphorylation than did Al-treated C. grandis leaves; and (d) both the equilibrium of hormones and hormone-mediated signal transduction were greatly disrupted in Al-treated C. grandis leaves, but less altered in Al-treated C. sinensis leaves. Finally, we discussed the differences in Al-responsive genes between Citrus roots and leaves.
Collapse
Affiliation(s)
- Peng Guo
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yi-Ping Qi
- Institute of Materia Medica, Fujian Academy of Medical Sciences, Fuzhou 350001, China
| | - Wei-Lin Huang
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lin-Tong Yang
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zeng-Rong Huang
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ning-Wei Lai
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Li-Song Chen
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| |
Collapse
|
14
|
Abstract
Plastids are semiautonomous organelles like mitochondria, and derive from a cyanobacterial ancestor that was engulfed by a host cell. During evolution, they have recruited proteins originating from the nuclear genome, and only parts of their ancestral metabolic properties were conserved and optimized to limit functional redundancy with other cell compartments. Furthermore, large disparities in metabolic functions exist among various types of plastids, and the characterization of their various metabolic properties is far from being accomplished. In this review, we provide an overview of the main functions, known to be achieved by plastids or shared by plastids and other compartments of the cell. In short, plastids appear at the heart of all main plant functions.
Collapse
Affiliation(s)
- Norbert Rolland
- Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Commissariat à l'Energie Atomique et aux Energies Alternatives, Grenoble, France.
| | - Imen Bouchnak
- Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Commissariat à l'Energie Atomique et aux Energies Alternatives, Grenoble, France
| | - Lucas Moyet
- Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Commissariat à l'Energie Atomique et aux Energies Alternatives, Grenoble, France
| | - Daniel Salvi
- Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Commissariat à l'Energie Atomique et aux Energies Alternatives, Grenoble, France
| | - Marcel Kuntz
- Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Commissariat à l'Energie Atomique et aux Energies Alternatives, Grenoble, France
| |
Collapse
|
15
|
Schwarzländer M, Fuchs P. Plant mitochondrial membranes: adding structure and new functions to respiratory physiology. CURRENT OPINION IN PLANT BIOLOGY 2017; 40:147-157. [PMID: 28992511 DOI: 10.1016/j.pbi.2017.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/31/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
Abstract
The membranes of mitochondria are focal points of cellular physiology and respiratory energy transformation. Recent discoveries have started painting a refined picture of plant mitochondrial membranes as platforms in which structure and function have evolved in an interconnected and dynamically regulated manner. Hosting ancillary functions that interact with other mitochondrial properties gives mitochondria the characteristics of multitasking and integrated molecular mega machines. We review recent insights into the makeup and the plasticity of the outer and inner mitochondrial membranes, their intimate relationship with respiratory function and regulation, and their properties in mediating solute transport. Synthesizing recent research advances we hypothesize that plant mitochondrial membranes are a privileged location for incorporation of a wide range of processes, some of which collaborate with respiratory function, including plant immunity, metabolic regulation and signal transduction, to underpin flexibility in the acclimation to changing environments.
Collapse
Affiliation(s)
- Markus Schwarzländer
- Institute of Crop Science and Resource Conservation (INRES), Rheinische Friedrich-Wilhelms-Universität Bonn, Friedrich-Ebert-Allee 144, D-53113 Bonn, Germany; Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, D-48143 Münster, Germany.
| | - Philippe Fuchs
- Institute of Crop Science and Resource Conservation (INRES), Rheinische Friedrich-Wilhelms-Universität Bonn, Friedrich-Ebert-Allee 144, D-53113 Bonn, Germany; Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, D-48143 Münster, Germany
| |
Collapse
|
16
|
Palmieri EM, Menga A, Lebrun A, Hooper DC, Butterfield DA, Mazzone M, Castegna A. Blockade of Glutamine Synthetase Enhances Inflammatory Response in Microglial Cells. Antioxid Redox Signal 2017; 26:351-363. [PMID: 27758118 PMCID: PMC5346956 DOI: 10.1089/ars.2016.6715] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIMS Microglial cells are brain-resident macrophages engaged in surveillance and maintained in a constant state of relative inactivity. However, their involvement in autoimmune diseases indicates that in pathological conditions microglia gain an inflammatory phenotype. The mechanisms underlying this change in the microglial phenotype are still unclear. Since metabolism is an important modulator of immune cell function, we focused our attention on glutamine synthetase (GS), a modulator of the response to lipopolysaccharide (LPS) activation in other cell types, which is expressed by microglia. RESULTS GS inhibition enhances release of inflammatory mediators of LPS-activated microglia in vitro, leading to perturbation of the redox balance and decreased viability of cocultured neurons. GS inhibition also decreases insulin-mediated glucose uptake in microglia. In vivo, microglia-specific GS ablation enhances expression of inflammatory markers upon LPS treatment. In the spinal cords from experimental autoimmune encephalomyelitis (EAE), GS expression levels and glutamine/glutamate ratios are reduced. INNOVATION Recently, metabolism has been highlighted as mediator of immune cell function through the discovery of mechanisms that (behind these metabolic changes) modulate the inflammatory response. The present study shows for the first time a metabolic mechanism mediating microglial response to a proinflammatory stimulus, pointing to GS activity as a master modulator of immune cell function and thus unraveling a potential therapeutic target. CONCLUSIONS Our study highlights a new role of GS in modulating immune response in microglia, providing insights into the pathogenic mechanisms associated with inflammation and new strategies of therapeutic intervention. Antioxid. Redox Signal. 26, 351-363.
Collapse
Affiliation(s)
- Erika M Palmieri
- 1 Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari , Bari, Italy
| | - Alessio Menga
- 2 National Cancer Research Center, Istituto Tumori 'Giovanni Paolo II,' Bari, Italy
| | - Aurore Lebrun
- 3 Department of Cancer Biology, Thomas Jefferson University , Philadelphia, Pennsylvania.,4 Department of Neurological Surgery, Thomas Jefferson University , Philadelphia, Pennsylvania
| | - Douglas C Hooper
- 3 Department of Cancer Biology, Thomas Jefferson University , Philadelphia, Pennsylvania.,4 Department of Neurological Surgery, Thomas Jefferson University , Philadelphia, Pennsylvania
| | - D Allan Butterfield
- 5 Department of Chemistry, University of Kentucky , Lexington, Kentucky.,6 Sanders-Brown Center on Aging, University of Kentucky , Lexington, Kentucky
| | - Massimiliano Mazzone
- 7 Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, University of Leuven , Leuven, Belgium .,8 Laboratory of Tumor Inflammation and Angiogenesis, Vesalius Research Center, VIB, Leuven, Belgium
| | - Alessandra Castegna
- 1 Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari , Bari, Italy .,2 National Cancer Research Center, Istituto Tumori 'Giovanni Paolo II,' Bari, Italy
| |
Collapse
|
17
|
Chrobok D, Law SR, Brouwer B, Lindén P, Ziolkowska A, Liebsch D, Narsai R, Szal B, Moritz T, Rouhier N, Whelan J, Gardeström P, Keech O. Dissecting the Metabolic Role of Mitochondria during Developmental Leaf Senescence. PLANT PHYSIOLOGY 2016; 172:2132-2153. [PMID: 27744300 PMCID: PMC5129728 DOI: 10.1104/pp.16.01463] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 10/13/2016] [Indexed: 05/20/2023]
Abstract
The functions of mitochondria during leaf senescence, a type of programmed cell death aimed at the massive retrieval of nutrients from the senescing organ to the rest of the plant, remain elusive. Here, combining experimental and analytical approaches, we showed that mitochondrial integrity in Arabidopsis (Arabidopsis thaliana) is conserved until the latest stages of leaf senescence, while their number drops by 30%. Adenylate phosphorylation state assays and mitochondrial respiratory measurements indicated that the leaf energy status also is maintained during this time period. Furthermore, after establishing a curated list of genes coding for products targeted to mitochondria, we analyzed in isolation their transcript profiles, focusing on several key mitochondrial functions, such as the tricarboxylic acid cycle, mitochondrial electron transfer chain, iron-sulfur cluster biosynthesis, transporters, as well as catabolic pathways. In tandem with a metabolomic approach, our data indicated that mitochondrial metabolism was reorganized to support the selective catabolism of both amino acids and fatty acids. Such adjustments would ensure the replenishment of α-ketoglutarate and glutamate, which provide the carbon backbones for nitrogen remobilization. Glutamate, being the substrate of the strongly up-regulated cytosolic glutamine synthase, is likely to become a metabolically limiting factor in the latest stages of developmental leaf senescence. Finally, an evolutionary age analysis revealed that, while branched-chain amino acid and proline catabolism are very old mitochondrial functions particularly enriched at the latest stages of leaf senescence, auxin metabolism appears to be rather newly acquired. In summation, our work shows that, during developmental leaf senescence, mitochondria orchestrate catabolic processes by becoming increasingly central energy and metabolic hubs.
Collapse
Affiliation(s)
- Daria Chrobok
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Simon R Law
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Bastiaan Brouwer
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Pernilla Lindén
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Agnieszka Ziolkowska
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Daniela Liebsch
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Reena Narsai
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Bozena Szal
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Thomas Moritz
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Nicolas Rouhier
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - James Whelan
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Per Gardeström
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.)
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.)
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.)
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| | - Olivier Keech
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, S-90187 Umea, Sweden (D.C., S.R.L., B.B., A.Z., D.L., P.G., O.K.);
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, S-90183 Umea, Sweden (P.L., T.M.);
- Department of Animal, Plant, and Soil Science, School of Life Science, Australian Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria 3086, Australia (R.N., J.W.);
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw I, 02-096 Warsaw, Poland (B.S.); and
- Unité Mixte de Recherche 1136 Interactions Arbres/Microorganismes, Université de Lorraine/Institut National de la Recherche Agronomique Faculté des Sciences et Technologies, 54506 Vandoeuvre-les-Nancy, France (N.R.)
| |
Collapse
|
18
|
Vozza A, De Leonardis F, Paradies E, De Grassi A, Pierri CL, Parisi G, Marobbio CMT, Lasorsa FM, Muto L, Capobianco L, Dolce V, Raho S, Fiermonte G. Biochemical characterization of a new mitochondrial transporter of dephosphocoenzyme A in Drosophila melanogaster. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1858:137-146. [PMID: 27836698 DOI: 10.1016/j.bbabio.2016.11.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 10/16/2016] [Accepted: 11/06/2016] [Indexed: 10/20/2022]
Abstract
CoA is an essential cofactor that holds a central role in cell metabolism. Although its biosynthetic pathway is conserved across the three domains of life, the subcellular localization of the eukaryotic biosynthetic enzymes and the mechanism behind the cytosolic and mitochondrial CoA pools compartmentalization are still under debate. In humans, the transport of CoA across the inner mitochondrial membrane has been ascribed to two related genes, SLC25A16 and SLC25A42 whereas in D. melanogaster genome only one gene is present, CG4241, phylogenetically closer to SLC25A42. CG4241 encodes two alternatively spliced isoforms, dPCoAC-A and dPCoAC-B. Both isoforms were expressed in Escherichia coli, but only dPCoAC-A was successfully reconstituted into liposomes, where transported dPCoA and, to a lesser extent, ADP and dADP but not CoA, which was a powerful competitive inhibitor. The expression of both isoforms in a Saccharomyces cerevisiae strain lacking the endogenous putative mitochondrial CoA carrier restored the growth on respiratory carbon sources and the mitochondrial levels of CoA. The results reported here and the proposed subcellular localization of some of the enzymes of the fruit fly CoA biosynthetic pathway, suggest that dPCoA may be synthesized and phosphorylated to CoA in the matrix, but it can also be transported by dPCoAC to the cytosol, where it may be phosphorylated to CoA by the monofunctional dPCoA kinase. Thus, dPCoAC may connect the cytosolic and mitochondrial reactions of the CoA biosynthetic pathway without allowing the two CoA pools to get in contact.
Collapse
Affiliation(s)
- Angelo Vozza
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Francesco De Leonardis
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Eleonora Paradies
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy; CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy.
| | - Anna De Grassi
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Ciro Leonardo Pierri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Giovanni Parisi
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Carlo Marya Thomas Marobbio
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Francesco Massimo Lasorsa
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy; CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy.
| | - Luigina Muto
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Cosenza, Italy.
| | - Loredana Capobianco
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy.
| | - Vincenza Dolce
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Cosenza, Italy.
| | - Susanna Raho
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| | - Giuseppe Fiermonte
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, via Orabona 4, 70125 Bari, Italy.
| |
Collapse
|
19
|
van Roermund CWT, Schroers MG, Wiese J, Facchinelli F, Kurz S, Wilkinson S, Charton L, Wanders RJA, Waterham HR, Weber APM, Link N. The Peroxisomal NAD Carrier from Arabidopsis Imports NAD in Exchange with AMP. PLANT PHYSIOLOGY 2016; 171:2127-39. [PMID: 27208243 PMCID: PMC4936582 DOI: 10.1104/pp.16.00540] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 04/29/2016] [Indexed: 05/20/2023]
Abstract
Cofactors such as NAD, AMP, and Coenzyme A (CoA) are essential for a diverse set of reactions and pathways in the cell. Specific carrier proteins are required to distribute these cofactors to different cell compartments, including peroxisomes. We previously identified a peroxisomal transport protein in Arabidopsis (Arabidopsis thaliana) called the peroxisomal NAD carrier (PXN). When assayed in vitro, this carrier exhibits versatile transport functions, e.g. catalyzing the import of NAD or CoA, the exchange of NAD/NADH, and the export of CoA. These observations raise the question about the physiological function of PXN in plants. Here, we used Saccharomyces cerevisiae to address this question. First, we confirmed that PXN, when expressed in yeast, is active and targeted to yeast peroxisomes. Secondl, detailed uptake analyses revealed that the CoA transport function of PXN can be excluded under physiological conditions due to its low affinity for this substrate. Third, we expressed PXN in diverse mutant yeast strains and investigated the suppression of the mutant phenotypes. These studies provided strong evidences that PXN was not able to function as a CoA transporter or a redox shuttle by mediating a NAD/NADH exchange, but instead catalyzed the import of NAD into peroxisomes against AMP in intact yeast cells.
Collapse
Affiliation(s)
- Carlo W T van Roermund
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Martin G Schroers
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Jan Wiese
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Fabio Facchinelli
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Samantha Kurz
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Sabrina Wilkinson
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Lennart Charton
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Ronald J A Wanders
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Hans R Waterham
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Andreas P M Weber
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| | - Nicole Link
- Laboratory Genetic Metabolic Diseases, Laboratory Division, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, The Netherlands (C.W.T.v.R., R.J.A.W., H.R.W.); andInstitute for Plant Biochemistry and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany (M.G.S., J.W., F.F., S.K., S.W., L.C., A.P.M.W., N.L.)
| |
Collapse
|
20
|
Palmieri F, Monné M. Discoveries, metabolic roles and diseases of mitochondrial carriers: A review. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:2362-78. [PMID: 26968366 DOI: 10.1016/j.bbamcr.2016.03.007] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 12/25/2022]
Abstract
Mitochondrial carriers (MCs) are a superfamily of nuclear-encoded proteins that are mostly localized in the inner mitochondrial membrane and transport numerous metabolites, nucleotides, cofactors and inorganic anions. Their unique sequence features, i.e., a tripartite structure, six transmembrane α-helices and a three-fold repeated signature motif, allow MCs to be easily recognized. This review describes how the functions of MCs from Saccharomyces cerevisiae, Homo sapiens and Arabidopsis thaliana (listed in the first table) were discovered after the genome sequence of S. cerevisiae was determined in 1996. In the genomic era, more than 50 previously unknown MCs from these organisms have been identified and characterized biochemically using a method consisting of gene expression, purification of the recombinant proteins, their reconstitution into liposomes and transport assays (EPRA). Information derived from studies with intact mitochondria, genetic and metabolic evidence, sequence similarity, phylogenetic analysis and complementation of knockout phenotypes have guided the choice of substrates that were tested in the transport assays. In addition, the diseases associated to defects of human MCs have been briefly reviewed. This article is part of a Special Issue entitled: Mitochondrial Channels edited by Pierre Sonveaux, Pierre Maechler and Jean-Claude Martinou.
Collapse
Affiliation(s)
- Ferdinando Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125 Bari, Italy.
| | - Magnus Monné
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125 Bari, Italy; Department of Sciences, University of Basilicata, Via Ateneo Lucano 10, 85100 Potenza, Italy
| |
Collapse
|
21
|
Shamseldin HE, Smith LL, Kentab A, Alkhalidi H, Summers B, Alsedairy H, Xiong Y, Gupta VA, Alkuraya FS. Mutation of the mitochondrial carrier SLC25A42 causes a novel form of mitochondrial myopathy in humans. Hum Genet 2015; 135:21-30. [PMID: 26541337 DOI: 10.1007/s00439-015-1608-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/24/2015] [Indexed: 01/08/2023]
Abstract
Myopathies are heterogeneous disorders characterized clinically by weakness and hypotonia, usually in the absence of gross dystrophic changes. Mitochondrial dysfunction is a frequent cause of myopathy. We report a simplex case born to consanguineous parents who presented with muscle weakness, lactic acidosis, and muscle changes suggestive of mitochondrial dysfunction. Combined autozygome and exome analysis revealed a missense variant in the SLC25A42 gene, which encodes an inner mitochondrial membrane protein that imports coenzyme A into the mitochondrial matrix. Zebrafish slc25a42 knockdown morphants display severe muscle disorganization and weakness. Importantly, these features are rescued by normal human SLC25A42 RNA, but not by RNA harboring the patient's variant. Our data support a potentially causal link between SLC25A42 mutation and mitochondrial myopathy in humans.
Collapse
Affiliation(s)
- Hanan E Shamseldin
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Laura L Smith
- Division of Genetics and Genomics, The Manton Center for Orphan Disease Research, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Amal Kentab
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Hisham Alkhalidi
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Brady Summers
- Department of Molecular Biophysics & Biochemistry 260 Whitney Avenue P.O. Box 208114. New Haven, CT, USA
| | - Haifa Alsedairy
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Yong Xiong
- Department of Molecular Biophysics & Biochemistry 260 Whitney Avenue P.O. Box 208114. New Haven, CT, USA
| | - Vandana A Gupta
- Division of Genetics and Genomics, The Manton Center for Orphan Disease Research, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Fowzan S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| |
Collapse
|
22
|
Ellens KW, Richardson LGL, Frelin O, Collins J, Ribeiro CL, Hsieh YF, Mullen RT, Hanson AD. Evidence that glutamine transaminase and omega-amidase potentially act in tandem to close the methionine salvage cycle in bacteria and plants. PHYTOCHEMISTRY 2015; 113:160-169. [PMID: 24837359 DOI: 10.1016/j.phytochem.2014.04.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 04/07/2014] [Accepted: 04/12/2014] [Indexed: 06/03/2023]
Abstract
S-Adenosylmethionine is converted enzymatically and non-enzymatically to methylthioadenosine, which is recycled to methionine (Met) via a salvage pathway. In plants and bacteria, enzymes for all steps in this pathway are known except the last: transamination of α-ketomethylthiobutyrate to give Met. In mammals, glutamine transaminase K (GTK) and ω-amidase (ω-Am) are thought to act in tandem to execute this step, with GTK forming α-ketoglutaramate, which ω-Am hydrolyzes. Comparative genomics indicated that GTK and ω-Am could function likewise in plants and bacteria because genes encoding GTK and ω-Am homologs (i) co-express with the Met salvage gene 5-methylthioribose kinase in Arabidopsis, and (ii) cluster on the chromosome with each other and with Met salvage genes in diverse bacteria. Consistent with this possibility, tomato, maize, and Bacillus subtilis GTK and ω-Am homologs had the predicted activities: GTK was specific for glutamine as amino donor and strongly preferred α-ketomethylthiobutyrate as amino acceptor, and ω-Am strongly preferred α-ketoglutaramate. Also consistent with this possibility, plant GTK and ω-Am were localized to the cytosol, where the Met salvage pathway resides, as well as to organelles. This multiple targeting was shown to result from use of alternative start codons. In B. subtilis, ablating GTK or ω-Am had a modest but significant inhibitory effect on growth on 5-methylthioribose as sole sulfur source. Collectively, these data indicate that while GTK, coupled with ω-Am, is positioned to support significant Met salvage flux in plants and bacteria, it can probably be replaced by other aminotransferases.
Collapse
Affiliation(s)
- Kenneth W Ellens
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA.
| | - Lynn G L Richardson
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Océane Frelin
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - Joseph Collins
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611, USA
| | - Cintia Leite Ribeiro
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611, USA
| | - Yih-Feng Hsieh
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611, USA
| | - Robert T Mullen
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Andrew D Hanson
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| |
Collapse
|
23
|
Palmieri EM, Spera I, Menga A, Infantino V, Porcelli V, Iacobazzi V, Pierri CL, Hooper DC, Palmieri F, Castegna A. Acetylation of human mitochondrial citrate carrier modulates mitochondrial citrate/malate exchange activity to sustain NADPH production during macrophage activation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2015; 1847:729-38. [PMID: 25917893 DOI: 10.1016/j.bbabio.2015.04.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/27/2015] [Accepted: 04/18/2015] [Indexed: 01/22/2023]
Abstract
The mitochondrial citrate-malate exchanger (CIC), a known target of acetylation, is up-regulated in activated immune cells and plays a key role in the production of inflammatory mediators. However, the role of acetylation in CIC activity is elusive. We show that CIC is acetylated in activated primary human macrophages and U937 cells and the level of acetylation is higher in glucose-deprived compared to normal glucose medium. Acetylation enhances CIC transport activity, leading to a higher citrate efflux from mitochondria in exchange with malate. Cytosolic citrate levels do not increase upon activation of cells grown in deprived compared to normal glucose media, indicating that citrate, transported from mitochondria at higher rates from acetylated CIC, is consumed at higher rates. Malate levels in the cytosol are lower in activated cells grown in glucose-deprived compared to normal glucose medium, indicating that this TCA intermediate is rapidly recycled back into the cytosol where it is used by the malic enzyme. Additionally, in activated cells CIC inhibition increases the NADP+/NADPH ratio in glucose-deprived cells; this ratio is unchanged in glucose-rich grown cells due to the activity of the pentose phosphate pathway. Consistently, the NADPH-producing isocitrate dehydrogenase level is higher in activated glucose-deprived as compared to glucose rich cells. These results demonstrate that, in the absence of glucose, activated macrophages increase CIC acetylation to enhance citrate efflux from mitochondria not only to produce inflammatory mediators but also to meet the NADPH demand through the actions of isocitrate dehydrogenase and malic enzyme.
Collapse
Affiliation(s)
- Erika M Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy
| | - Iolanda Spera
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy
| | - Alessio Menga
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy
| | | | - Vito Porcelli
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy
| | - Vito Iacobazzi
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy; Center of Excellence in Comparative Genomics, University of Bari "Aldo Moro", Bari, Italy; CNR Institute of Biomembranes and Bioenergetics, Bari, Italy
| | - Ciro L Pierri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy
| | - Douglas C Hooper
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, USA; Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, USA
| | - Ferdinando Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy; Center of Excellence in Comparative Genomics, University of Bari "Aldo Moro", Bari, Italy.
| | - Alessandra Castegna
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy; Center of Excellence in Comparative Genomics, University of Bari "Aldo Moro", Bari, Italy.
| |
Collapse
|
24
|
The STM4195 gene product (PanS) transports coenzyme A precursors in Salmonella enterica. J Bacteriol 2015; 197:1368-77. [PMID: 25645561 DOI: 10.1128/jb.02506-14] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Coenzyme A (CoA) is a ubiquitous coenzyme involved in fundamental metabolic processes. CoA is synthesized from pantothenic acid by a pathway that is largely conserved among bacteria and eukaryotes and consists of five enzymatic steps. While higher organisms, including humans, must scavenge pantothenate from the environment, most bacteria and plants are capable of de novo pantothenate biosynthesis. In Salmonella enterica, precursors to pantothenate can be salvaged, but subsequent intermediates are not transported due to their phosphorylated state, and thus the pathway from pantothenate to CoA is considered essential. Genetic analyses identified the STM4195 gene product of Salmonella enterica serovar Typhimurium as a transporter of pantothenate precursors, ketopantoate and pantoate and, to a lesser extent, pantothenate. Further results indicated that STM4195 transports a product of CoA degradation that serves as a precursor to CoA and enters the biosynthetic pathway between PanC and CoaBC (dfp). The relevant CoA derivative is distinguishable from pantothenate, pantetheine, and pantethine and has spectral properties indicating the adenine moiety of CoA is intact. Taken together, the results presented here provide evidence of a transport mechanism for the uptake of ketopantoate, pantoate, and pantothenate and demonstrate a role for STM4195 in the salvage of a CoA derivative of unknown structure. The STM4195 gene is renamed panS to reflect participation in pantothenate salvage that was uncovered herein. IMPORTANCE This manuscript describes a transporter for two pantothenate precursors in addition to the existence and transport of a salvageable coenzyme A (CoA) derivative. Specifically, these studies defined a function for an STM protein in S. enterica that was distinct from the annotated role and led to its designation as PanS (pantothenate salvage). The presence of a salvageable CoA derivative and a transporter for it suggests the possibility that this compound is present in the environment and may serve a role in CoA synthesis for some organisms. As such, this work raises important question about CoA salvage that can be pursued with future studies in bacteria and other organisms.
Collapse
|
25
|
Rutter J, Hughes AL. Power(2): the power of yeast genetics applied to the powerhouse of the cell. Trends Endocrinol Metab 2015; 26:59-68. [PMID: 25591985 PMCID: PMC4315768 DOI: 10.1016/j.tem.2014.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 12/09/2014] [Accepted: 12/09/2014] [Indexed: 11/18/2022]
Abstract
The budding yeast Saccharomyces cerevisiae has served as a remarkable model organism for numerous seminal discoveries in biology. This paradigm extends to the mitochondria, a central hub for cellular metabolism, where studies in yeast have helped to reinvigorate the field and launch an exciting new era in mitochondrial biology. Here we discuss a few recent examples in which yeast research has laid a foundation for our understanding of evolutionarily conserved mitochondrial processes and functions, from key factors and pathways involved in the assembly of oxidative phosphorylation (OXPHOS) complexes to metabolite transport, lipid metabolism, and interorganelle communication. We also highlight new areas of yeast mitochondrial biology that are likely to aid in our understanding of the mitochondrial etiology of disease in the future.
Collapse
Affiliation(s)
- Jared Rutter
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.
| | - Adam L Hughes
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.
| |
Collapse
|
26
|
Leonardi R, Rock CO, Jackowski S. Pank1 deletion in leptin-deficient mice reduces hyperglycaemia and hyperinsulinaemia and modifies global metabolism without affecting insulin resistance. Diabetologia 2014; 57:1466-75. [PMID: 24781151 PMCID: PMC4618598 DOI: 10.1007/s00125-014-3245-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 03/28/2014] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS Pantothenate kinase (PANK) is the first enzyme in CoA biosynthesis. Pank1-deficient mice have 40% lower liver CoA and fasting hypoglycaemia, which results from reduced gluconeogenesis. Single-nucleotide polymorphisms in the human PANK1 gene are associated with insulin levels, suggesting a link between CoA and insulin homeostasis. We determined whether Pank1 deficiency (1) modified insulin levels, (2) ameliorated hyperglycaemia and hyperinsulinaemia, and (3) improved acute glucose and insulin tolerance of leptin (Lep)-deficient mice. METHODS Serum insulin and responses to glucose and insulin tolerance tests were determined in Pank1-deficient mice. Levels of CoA and regulating enzymes were measured in liver and skeletal muscle of Lep-deficient mice. Double Pank1/Lep-deficient mice were analysed for the diabetes-related phenotype and global metabolism. RESULTS Pank1-deficient mice had lower serum insulin and improved glucose tolerance and insulin sensitivity compared with wild-type mice. Hepatic and muscle CoA was abnormally high in Lep-deficient mice. Pank1 deletion reduced hepatic CoA but not muscle CoA, reduced serum glucose and insulin, but did not normalise body weight or improve acute glucose tolerance or protein kinase B phosphorylation in Lep-deficient animals. Pank1/Lep double-deficient mice exhibited reduced whole-body metabolism of fatty acids and amino acids and had a greater reliance on carbohydrate use for energy production. CONCLUSIONS/INTERPRETATION The results indicate that Pank1 deficiency drives a whole-body metabolic adaptation that improves aspects of the diabetic phenotype and uncouples hyperglycaemia and hyperinsulinaemia from obesity in leptin-deficient mice.
Collapse
Affiliation(s)
- Roberta Leonardi
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Charles O. Rock
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Suzanne Jackowski
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
- To whom correspondence should be addressed: Department of Infectious Diseases, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105-3678; Phone: 901-595-3494; Fax: 901-595-3099;
| |
Collapse
|
27
|
Trono D, Laus MN, Soccio M, Pastore D. Transport pathways--proton motive force interrelationship in durum wheat mitochondria. Int J Mol Sci 2014; 15:8186-215. [PMID: 24821541 PMCID: PMC4057727 DOI: 10.3390/ijms15058186] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/18/2014] [Accepted: 04/24/2014] [Indexed: 12/25/2022] Open
Abstract
In durum wheat mitochondria (DWM) the ATP-inhibited plant mitochondrial potassium channel (PmitoK(ATP)) and the plant uncoupling protein (PUCP) are able to strongly reduce the proton motive force (pmf) to control mitochondrial production of reactive oxygen species; under these conditions, mitochondrial carriers lack the driving force for transport and should be inactive. However, unexpectedly, DWM uncoupling by PmitoK(ATP) neither impairs the exchange of ADP for ATP nor blocks the inward transport of Pi and succinate. This uptake may occur via the plant inner membrane anion channel (PIMAC), which is physiologically inhibited by membrane potential, but unlocks its activity in de-energized mitochondria. Probably, cooperation between PIMAC and carriers may accomplish metabolite movement across the inner membrane under both energized and de-energized conditions. PIMAC may also cooperate with PmitoK(ATP) to transport ammonium salts in DWM. Interestingly, this finding may trouble classical interpretation of in vitro mitochondrial swelling; instead of free passage of ammonia through the inner membrane and proton symport with Pi, that trigger metabolite movements via carriers, transport of ammonium via PmitoK(ATP) and that of the counteranion via PIMAC may occur. Here, we review properties, modulation and function of the above reported DWM channels and carriers to shed new light on the control that they exert on pmf and vice-versa.
Collapse
Affiliation(s)
- Daniela Trono
- Consiglio per la Ricerca e la sperimentazione in Agricoltura, Centro di Ricerca per la Cerealicoltura, S.S. 673 Km 25, 71122 Foggia, Italy.
| | - Maura N Laus
- Dipartimento di Scienze Agrarie, degli Alimenti e dell'Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy.
| | - Mario Soccio
- Dipartimento di Scienze Agrarie, degli Alimenti e dell'Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy.
| | - Donato Pastore
- Dipartimento di Scienze Agrarie, degli Alimenti e dell'Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy.
| |
Collapse
|
28
|
Guan JC, Hasnain G, Garrett TJ, Chase CD, Gregory J, Hanson AD, McCarty DR. Divisions of labor in the thiamin biosynthetic pathway among organs of maize. FRONTIERS IN PLANT SCIENCE 2014; 5:370. [PMID: 25136345 PMCID: PMC4120688 DOI: 10.3389/fpls.2014.00370] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 07/11/2014] [Indexed: 05/06/2023]
Abstract
The B vitamin thiamin is essential for central metabolism in all cellular organisms including plants. While plants synthesize thiamin de novo, organs vary widely in their capacities for thiamin synthesis. We use a transcriptomics approach to appraise the distribution of de novo synthesis and thiamin salvage pathways among organs of maize. We identify at least six developmental contexts in which metabolically active, non-photosynthetic organs exhibit low expression of one or both branches of the de novo thiamin biosynthetic pathway indicating a dependence on inter-cellular transport of thiamin and/or thiamin precursors. Neither the thiazole (THI4) nor pyrimidine (THIC) branches of the pathway are expressed in developing pollen implying a dependence on import of thiamin from surrounding floral and inflorescence organs. Consistent with that hypothesis, organs of the male inflorescence and flowers are shown to have high relative expression of the thiamin biosynthetic pathway and comparatively high thiamin contents. By contrast, divergent patterns of THIC and THI4 expression occur in the shoot apical meristem, embyro sac, embryo, endosperm, and root-tips suggesting that these sink organs acquire significant amounts of thiamin via salvage pathways. In the root and shoot meristems, expression of THIC in the absence of THI4 indicates a capacity for thiamin synthesis via salvage of thiazole, whereas the opposite pattern obtains in embryo and endosperm implying that seed storage organs are poised for pyrimidine salvage. Finally, stable isotope labeling experiments set an upper limit on the rate of de novo thiamin biosynthesis in maize leaf explants. Overall, the observed patterns of thiamin biosynthetic gene expression mirror the strategies for thiamin acquisition that have evolved in bacteria.
Collapse
Affiliation(s)
- Jiahn-Chou Guan
- Genetics Institute and Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of FloridaGainesville, FL, USA
| | - Ghulam Hasnain
- Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of FloridaGainesville, FL, USA
| | - Timothy J. Garrett
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of FloridaGainesville, FL, USA
| | - Christine D. Chase
- Genetics Institute and Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of FloridaGainesville, FL, USA
| | - Jesse Gregory
- Department of Food Science and Human Nutrition, Institute of Food and Agricultural Sciences, University of FloridaGainesville, FL, USA
| | - Andrew D. Hanson
- Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of FloridaGainesville, FL, USA
| | - Donald R. McCarty
- Genetics Institute and Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of FloridaGainesville, FL, USA
- *Correspondence: Donald R. McCarty, Genetics Institute and Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida, PO 110690, Gainesville, FL 32611, USA e-mail:
| |
Collapse
|
29
|
Todisco S, Di Noia MA, Castegna A, Lasorsa FM, Paradies E, Palmieri F. The Saccharomyces cerevisiae gene YPR011c encodes a mitochondrial transporter of adenosine 5'-phosphosulfate and 3'-phospho-adenosine 5'-phosphosulfate. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2013; 1837:326-34. [PMID: 24296033 DOI: 10.1016/j.bbabio.2013.11.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/15/2013] [Accepted: 11/21/2013] [Indexed: 11/19/2022]
Abstract
The genome of Saccharomyces cerevisiae contains 35 members of the mitochondrial carrier family, nearly all of which have been functionally characterized. In this study, the identification of the mitochondrial carrier for adenosine 5'-phosphosulfate (APS) is described. The corresponding gene (YPR011c) was overexpressed in bacteria. The purified protein was reconstituted into phospholipid vesicles and its transport properties and kinetic parameters were characterized. It transported APS, 3'-phospho-adenosine 5'-phosphosulfate, sulfate and phosphate almost exclusively by a counter-exchange mechanism. Transport was saturable and inhibited by bongkrekic acid and other inhibitors. To investigate the physiological significance of this carrier in S. cerevisiae, mutants were subjected to thermal shock at 45°C in the presence of sulfate and in the absence of methionine. At 45°C cells lacking YPR011c, engineered cells (in which APS is produced only in mitochondria) and more so the latter cells, in which the exit of mitochondrial APS is prevented by the absence of YPR011cp, were less thermotolerant. Moreover, at the same temperature all these cells contained less methionine and total glutathione than wild-type cells. Our results show that S. cerevisiae mitochondria are equipped with a transporter for APS and that YPR011cp-mediated mitochondrial transport of APS occurs in S. cerevisiae under thermal stress conditions.
Collapse
Affiliation(s)
- Simona Todisco
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, via Orabona 4, 70125 Bari, Italy; Center of Excellence in Comparative Genomics, University of Bari, Italy
| | | | - Alessandra Castegna
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, via Orabona 4, 70125 Bari, Italy; Center of Excellence in Comparative Genomics, University of Bari, Italy
| | - Francesco Massimo Lasorsa
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, via Orabona 4, 70125 Bari, Italy; CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy
| | - Eleonora Paradies
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, via Orabona 4, 70125 Bari, Italy; CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy
| | - Ferdinando Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, via Orabona 4, 70125 Bari, Italy; Center of Excellence in Comparative Genomics, University of Bari, Italy.
| |
Collapse
|