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Toke O. Structural and Dynamic Determinants of Molecular Recognition in Bile Acid-Binding Proteins. Int J Mol Sci 2022; 23:ijms23010505. [PMID: 35008930 PMCID: PMC8745080 DOI: 10.3390/ijms23010505] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 12/12/2022] Open
Abstract
Disorders in bile acid transport and metabolism have been related to a number of metabolic disease states, atherosclerosis, type-II diabetes, and cancer. Bile acid-binding proteins (BABPs), a subfamily of intracellular lipid-binding proteins (iLBPs), have a key role in the cellular trafficking and metabolic targeting of bile salts. Within the family of iLBPs, BABPs exhibit unique binding properties including positive binding cooperativity and site-selectivity, which in different tissues and organisms appears to be tailored to the local bile salt pool. Structural and biophysical studies of the past two decades have shed light on the mechanism of bile salt binding at the atomic level, providing us with a mechanistic picture of ligand entry and release, and the communication between the binding sites. In this review, we discuss the emerging view of bile salt recognition in intestinal- and liver-BABPs, with examples from both mammalian and non-mammalian species. The structural and dynamic determinants of the BABP-bile–salt interaction reviewed herein set the basis for the design and development of drug candidates targeting the transcellular traffic of bile salts in enterocytes and hepatocytes.
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Affiliation(s)
- Orsolya Toke
- Laboratory for NMR Spectroscopy, Structural Research Centre, Research Centre for Natural Sciences, 2 Magyar Tudósok Körútja, H-1117 Budapest, Hungary
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2
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The ligand-mediated affinity of brain-type fatty acid-binding protein for membranes determines the directionality of lipophilic cargo transport. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:158506. [DOI: 10.1016/j.bbalip.2019.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 07/29/2019] [Accepted: 08/08/2019] [Indexed: 01/22/2023]
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Munari F, Bortot A, Assfalg M, D'Onofrio M. Alzheimer's disease-associated ubiquitin mutant Ubb +1: Properties of the carboxy-terminal domain and its influence on biomolecular interactions. Int J Biol Macromol 2017; 108:24-31. [PMID: 29175520 DOI: 10.1016/j.ijbiomac.2017.11.121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/17/2017] [Accepted: 11/19/2017] [Indexed: 12/19/2022]
Abstract
Ubb+1, a ubiquitin (Ub) mutant protein originating from misreading of the Ub B gene, is found accumulated in brain tissues of Alzheimer's disease patients. The mutant attracts strong interest due to its possible participation in the molecular events leading to neurodegeneration. Ubb+1 is composed of the globular domain of Ub, linked to a 19-residue C-terminal peptide. Based on NMR relaxation and solvent accessibility measurements we obtained new insight into the molecular properties of Ubb+1. We further determined the thermal stability of Ubb+1 in the monomeric form, and in Lys48- and Lys63-linked dimers. Finally, we explored the influence of the C-terminal fragment on the interactions of Ubb+1 with an isolated UBA2 domain and with membrane mimics. Our data indicate that the C-terminal fragment of Ubb+1 is overall highly flexible, except for a short stretch which appears less solvent-exposed. While influencing the hydrodynamic properties of the globular domain, the fragment does not establish long-lived interactions with the globular domain. It results that the structure and stability of Ub are minimally perturbed by the peptide extension. However, binding to UBA2 and to membrane mimics are both affected, exemplifying possible changes in biomolecular recognition experienced by the disease-associated Ubb+1 compared to the wild-type protein.
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Affiliation(s)
- Francesca Munari
- Department of Biotechnology, University of Verona, 37134 Verona, Italy
| | - Andrea Bortot
- Department of Biotechnology, University of Verona, 37134 Verona, Italy
| | - Michael Assfalg
- Department of Biotechnology, University of Verona, 37134 Verona, Italy
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4
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Horváth G, Biczók L, Majer Z, Kovács M, Micsonai A, Kardos J, Toke O. Structural insight into a partially unfolded state preceding aggregation in an intracellular lipid-binding protein. FEBS J 2017; 284:3637-3661. [DOI: 10.1111/febs.14264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 08/15/2017] [Accepted: 09/05/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Gergő Horváth
- Laboratory for NMR Spectroscopy; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - László Biczók
- Institute of Materials and Environmental Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - Zsuzsa Majer
- Institute of Chemistry; Eötvös Loránd University; Budapest Hungary
| | - Mihály Kovács
- Department of Biochemistry; ELTE-MTA ‘Momentum’ Motor Enzymology Research Group; Eötvös Loránd University; Budapest Hungary
| | - András Micsonai
- Department of Biochemistry; MTA-ELTE NAP B Neuroimmunology Research Group; Institute of Biology; Eötvös Loránd University; Budapest Hungary
| | - József Kardos
- Department of Biochemistry; MTA-ELTE NAP B Neuroimmunology Research Group; Institute of Biology; Eötvös Loránd University; Budapest Hungary
| | - Orsolya Toke
- Laboratory for NMR Spectroscopy; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
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5
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D'Onofrio M, Zanzoni S, Munari F, Monaco HL, Assfalg M, Capaldi S. The long variant of human ileal bile acid-binding protein associated with colorectal cancer exhibits sub-cellular localization and lipid binding behaviour distinct from those of the common isoform. Biochim Biophys Acta Gen Subj 2017; 1861:2315-2324. [PMID: 28689989 DOI: 10.1016/j.bbagen.2017.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/09/2017] [Accepted: 07/05/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND Ileal bile acid-binding protein, IBABP, participates in the intracellular trafficking of bile salts and influences their signaling activities. The recently discovered variant, IBABP-L, bearing an N-terminal 49-amino acid extension, was found to be associated with colorectal cancer and to protect cancer cells from the cytotoxic effects of deoxycholate. However, the precise function and the molecular properties of this variant are currently unknown. METHODS Bioinformatics tools and confocal microscopy were used to investigate the sub-cellular localization of IBABP-L; protein dynamics, ligand binding and interaction with membrane models were studied by 2D NMR and fluorescence spectroscopy. RESULTS Based on sub-cellular localization experiments we conclude that IBABP-L is targeted to the secretory pathway by a 24-residue signal peptide and, upon its cleavage, the mature protein is constitutively released into the extracellular space. Site-resolved NMR experiments indicated the distinct preference of primary and secondary bile salts to form either heterotypic or homotypic complexes with IBABP-L. The presence of the relatively dynamic N-terminal extension, originating only subtle conformational perturbations in the globular domain, was found to influence binding site occupation in IBABP-L as compared to IBABP. Even more pronounced differences were found in the tendency of the two variants to associate with phospholipid bilayers. CONCLUSIONS IBABP-L exhibits different sub-cellular localization, ligand-binding properties and membrane interaction propensity compared to the canonical short isoform. GENERAL SIGNIFICANCE Our results constitute an essential first step towards an understanding of the role of IBABP-L in bile salt trafficking and signaling under healthy and pathological conditions.
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Affiliation(s)
- Mariapina D'Onofrio
- Biomolecular NMR Laboratory, Department of Biotechnology, University of Verona, Ca' Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy
| | - Serena Zanzoni
- Biomolecular NMR Laboratory, Department of Biotechnology, University of Verona, Ca' Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy
| | - Francesca Munari
- Biomolecular NMR Laboratory, Department of Biotechnology, University of Verona, Ca' Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy
| | - Hugo L Monaco
- Biocrystallography Laboratory, Department of Biotechnology, University of Verona, Ca' Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy
| | - Michael Assfalg
- Biomolecular NMR Laboratory, Department of Biotechnology, University of Verona, Ca' Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy.
| | - Stefano Capaldi
- Biocrystallography Laboratory, Department of Biotechnology, University of Verona, Ca' Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy.
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6
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Zanzoni S, Pagano K, D'Onofrio M, Assfalg M, Ciambellotti S, Bernacchioni C, Turano P, Aime S, Ragona L, Molinari H. Unsaturated Long-Chain Fatty Acids Are Preferred Ferritin Ligands That Enhance Iron Biomineralization. Chemistry 2017; 23:9879-9887. [PMID: 28489257 DOI: 10.1002/chem.201701164] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Indexed: 12/20/2022]
Abstract
Ferritin is a ubiquitous nanocage protein, which can accommodate up to thousands of iron atoms inside its cavity. Aside from its iron storage function, a new role as a fatty acid binder has been proposed for this protein. The interaction of apo horse spleen ferritin (HoSF) with a variety of lipids has been here investigated through NMR spectroscopic ligand-based experiments, to provide new insights into the mechanism of ferritin-lipid interactions, and the link with iron mineralization. 1D 1 H, diffusion (DOSY) and saturation-transfer difference (STD) NMR experiments provided evidence for a stronger interaction of ferritin with unsaturated fatty acids compared to saturated fatty acids, detergents, and bile acids. Mineralization assays showed that oleate c aused the most efficient increase in the initial rate of iron oxidation, and the highest formation of ferric species in HoSF. The comprehension of the factors inducing a faster biomineralization is an issue of the utmost importance, given the association of ferritin levels with metabolic syndromes, such as insulin resistance and diabetes, characterized by fatty acid concentration dysregulation. The human ferritin H-chain homopolymer (HuHF), featuring ferroxidase activity, was also tested for its fatty acid binding capabilities. Assays show that oleate can bind with high affinity to HuHF, without altering the reaction rates at the ferroxidase site.
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Affiliation(s)
- Serena Zanzoni
- NMR Laboratory, Biotechnology Department, Università di Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Katiuscia Pagano
- Istituto per lo Studio delle Macromolecole, CNR, Via Corti 12, 20133, Milano, Italy
| | - Mariapina D'Onofrio
- NMR Laboratory, Biotechnology Department, Università di Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Michael Assfalg
- NMR Laboratory, Biotechnology Department, Università di Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Silvia Ciambellotti
- Dipartimento di Chimica, Università di Firenze, Via Della Lastruccia 3, Sesto Fiorentino, 50019, Firenze, Italy.,CERM, Università di Firenze, Via L. Sacconi 6, Sesto Fiorentino, 50019, Firenze, Italy
| | - Caterina Bernacchioni
- Dipartimento di Chimica, Università di Firenze, Via Della Lastruccia 3, Sesto Fiorentino, 50019, Firenze, Italy.,CERM, Università di Firenze, Via L. Sacconi 6, Sesto Fiorentino, 50019, Firenze, Italy
| | - Paola Turano
- Dipartimento di Chimica, Università di Firenze, Via Della Lastruccia 3, Sesto Fiorentino, 50019, Firenze, Italy.,CERM, Università di Firenze, Via L. Sacconi 6, Sesto Fiorentino, 50019, Firenze, Italy
| | - Silvio Aime
- Molecular & Preclinical Imaging Centers, Department of Molecular Biotechnology and Health Sciences, Università di Torino, Torino, Italy.,IBB-CNR-UOS, Università di Torino, Torino, Italy
| | - Laura Ragona
- Istituto per lo Studio delle Macromolecole, CNR, Via Corti 12, 20133, Milano, Italy
| | - Henriette Molinari
- Istituto per lo Studio delle Macromolecole, CNR, Via Corti 12, 20133, Milano, Italy
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7
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Transient Interactions of a Cytosolic Protein with Macromolecular and Vesicular Cosolutes: Unspecific and Specific Effects. Chembiochem 2015; 16:2633-45. [DOI: 10.1002/cbic.201500451] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Indexed: 01/04/2023]
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8
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Tomaselli S, Pagano K, Boulton S, Zanzoni S, Melacini G, Molinari H, Ragona L. Lipid binding protein response to a bile acid library: a combined NMR and statistical approach. FEBS J 2015; 282:4094-113. [PMID: 26260520 DOI: 10.1111/febs.13405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/20/2015] [Accepted: 08/06/2015] [Indexed: 01/23/2023]
Abstract
Primary bile acids, differing in hydroxylation pattern, are synthesized from cholesterol in the liver and, once formed, can undergo extensive enzyme-catalysed glycine/taurine conjugation, giving rise to a complex mixture, the bile acid pool. Composition and concentration of the bile acid pool may be altered in diseases, posing a general question on the response of the carrier (bile acid binding protein) to the binding of ligands with different hydrophobic and steric profiles. A collection of NMR experiments (H/D exchange, HET-SOFAST, ePHOGSY NOESY/ROESY and (15) N relaxation measurements) was thus performed on apo and five different holo proteins, to monitor the binding pocket accessibility and dynamics. The ensemble of obtained data could be rationalized by a statistical approach, based on chemical shift covariance analysis, in terms of residue-specific correlations and collective protein response to ligand binding. The results indicate that the same residues are influenced by diverse chemical stresses: ligand binding always induces silencing of motions at the protein portal with a concomitant conformational rearrangement of a network of residues, located at the protein anti-portal region. This network of amino acids, which do not belong to the binding site, forms a contiguous surface, sensing the presence of the bound lipids, with a signalling role in switching protein-membrane interactions on and off.
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Affiliation(s)
- Simona Tomaselli
- NMR Laboratory, Istituto per lo Studio delle Macromolecole (ISMAC), Milano, Italy
| | - Katiuscia Pagano
- NMR Laboratory, Istituto per lo Studio delle Macromolecole (ISMAC), Milano, Italy
| | - Stephen Boulton
- Departments of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | | | - Giuseppe Melacini
- Departments of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada.,Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Canada
| | - Henriette Molinari
- NMR Laboratory, Istituto per lo Studio delle Macromolecole (ISMAC), Milano, Italy
| | - Laura Ragona
- NMR Laboratory, Istituto per lo Studio delle Macromolecole (ISMAC), Milano, Italy
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9
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The study of transient protein-nanoparticle interactions by solution NMR spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1864:102-14. [PMID: 25936778 DOI: 10.1016/j.bbapap.2015.04.024] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/20/2015] [Accepted: 04/21/2015] [Indexed: 12/30/2022]
Abstract
The rapid development of novel nanoscale materials for applications in biomedicine urges an improved characterization of the nanobio interfaces. Nanoparticles exhibit unique structures and properties, often different from the corresponding bulk materials, and the nature of their interactions with biological systems remains poorly characterized. Solution NMR spectroscopy is a mature technique for the investigation of biomolecular structure, dynamics, and intermolecular associations, however its use in protein-nanoparticle interaction studies remains scarce and highly challenging, particularly due to unfavorable hydrodynamic properties of most nanoscale assemblies. Nonetheless, recent efforts demonstrated that a number of NMR observables, such as chemical shifts, signal intensities, amide exchange rates and relaxation parameters, together with newly designed saturation transfer experiments, could be successfully employed to characterize the orientation, structure and dynamics of proteins adsorbed onto nanoparticle surfaces. This review provides the first survey and critical assessment of the contributions from solution NMR spectroscopy to the study of transient interactions between proteins and both inorganic (gold, silver, and silica) and organic (polymer, carbon and lipid based) nanoparticles. This article is part of a Special Issue entitled: Physiological Enzymology and Protein Functions.
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10
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Favretto F, Ceccon A, Zanzoni S, D'Onofrio M, Ragona L, Molinari H, Assfalg M. The unique ligand binding features of subfamily-II iLBPs with respect to bile salts and related drugs. Prostaglandins Leukot Essent Fatty Acids 2015; 95:1-10. [PMID: 25468388 DOI: 10.1016/j.plefa.2014.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 10/20/2014] [Indexed: 11/28/2022]
Abstract
Intracellular lipid binding proteins (iLBPs) are a family of evolutionarily related small cytoplasmic proteins implicated in the transcellular transport of lipophilic ligands. Subfamily-II iLBPs include the liver fatty acid binding protein (L-FABP), and the ileal and the liver and ileal bile acid binding proteins (L-BABP and I-BABP). Atomic-level investigations during the past 15-20 years have delivered relevant information on bile acid binding by this protein group, revealing unique features including binding cooperativity, promiscuity, and site selectivity. Using NMR spectroscopy and other biophysical techniques, our laboratories have contributed to an understanding of the molecular determinants of some of these properties and their generality among proteins from different animal species. We focused especially on formation of heterotypic complexes, considering the mixed compositions of physiological bile acid pools. Experiments performed with synthetic bile acid derivatives showed that iLBPs could act as targets for cell-specific contrast agents and, more generally, as effective carriers of amphiphilic drugs. This review collects the major findings related to bile salt interactions with iLBPs aiming to provide keys for a deeper understanding of protein-mediated intracellular bile salt trafficking.
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Affiliation(s)
- Filippo Favretto
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy
| | - Alberto Ceccon
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy
| | - Serena Zanzoni
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy
| | - Mariapina D'Onofrio
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy
| | - Laura Ragona
- Institute for Macromolecular Studies, National Research Council, Via Bassini 15, Milan 20133, Italy
| | - Henriette Molinari
- Institute for Macromolecular Studies, National Research Council, Via Bassini 15, Milan 20133, Italy
| | - Michael Assfalg
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy.
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11
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Jakob U, Kriwacki R, Uversky VN. Conditionally and transiently disordered proteins: awakening cryptic disorder to regulate protein function. Chem Rev 2014; 114:6779-805. [PMID: 24502763 PMCID: PMC4090257 DOI: 10.1021/cr400459c] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ursula Jakob
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan 48109-1048, United States
| | - Richard Kriwacki
- Department of Structural Biology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Vladimir N. Uversky
- Department of Molecular Medicine, University of South Florida, Tampa, Florida 33612, United States
- Institute for Biological Instrumentation, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
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12
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Ragona L, Pagano K, Tomaselli S, Favretto F, Ceccon A, Zanzoni S, D'Onofrio M, Assfalg M, Molinari H. The role of dynamics in modulating ligand exchange in intracellular lipid binding proteins. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:1268-78. [PMID: 24768771 DOI: 10.1016/j.bbapap.2014.04.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 11/29/2022]
Abstract
Lipids are essential for many biological processes and crucial in the pathogenesis of several diseases. Intracellular lipid-binding proteins (iLBPs) provide mobile hydrophobic binding sites that allow hydrophobic or amphipathic lipid molecules to penetrate into and across aqueous layers. Thus iLBPs mediate the lipid transport within the cell and participate to a spectrum of tissue-specific pathways involved in lipid homeostasis. Structural studies have shown that iLBPs' binding sites are inaccessible from the bulk, implying that substrate binding should involve a conformational change able to produce a ligand entry portal. Many studies have been reported in the last two decades on iLBPs indicating that their dynamics play a pivotal role in regulating ligand binding and targeted release. The ensemble of reported data has not been reviewed until today. This review is thus intended to summarize and possibly generalize the results up to now described, providing a picture which could help to identify the missing notions necessary to improve our understanding of the role of dynamics in iLBPs' molecular recognition. Such notions would clarify the chemistry of lipid binding to iLBPs and set the basis for the development of new drugs.
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Affiliation(s)
- Laura Ragona
- Laboratorio NMR, Istituto per lo Studio delle Macromolecole (ISMAC), CNR, Via Bassini 15, 20133 Milano, Italy
| | - Katiuscia Pagano
- Laboratorio NMR, Istituto per lo Studio delle Macromolecole (ISMAC), CNR, Via Bassini 15, 20133 Milano, Italy
| | - Simona Tomaselli
- Laboratorio NMR, Istituto per lo Studio delle Macromolecole (ISMAC), CNR, Via Bassini 15, 20133 Milano, Italy
| | - Filippo Favretto
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Alberto Ceccon
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Serena Zanzoni
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Mariapina D'Onofrio
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Michael Assfalg
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Henriette Molinari
- Laboratorio NMR, Istituto per lo Studio delle Macromolecole (ISMAC), CNR, Via Bassini 15, 20133 Milano, Italy.
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13
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Galassi VV, Villarreal MA, Posada V, Montich GG. Interactions of the fatty acid-binding protein ReP1-NCXSQ with lipid membranes. Influence of the membrane electric field on binding and orientation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:910-20. [DOI: 10.1016/j.bbamem.2013.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 11/12/2013] [Accepted: 11/13/2013] [Indexed: 11/17/2022]
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14
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Longo DL, Di Gregorio E, Abategiovanni R, Ceccon A, Assfalg M, Molinari H, Aime S. Chemical exchange saturation transfer (CEST): an efficient tool for detecting molecular information on proteins' behaviour. Analyst 2014; 139:2687-90. [DOI: 10.1039/c4an00346b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this communication, we report that protein remodeling processes, such as aggregation, unfolding and interaction with lipid membranes, may be investigated by magnetic resonance imaging (MRI) through the CEST mechanism.
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Affiliation(s)
- Dario Livio Longo
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
- Institute for Biostructures and Bioimages (CNR)
- c/o Molecular Biotechnology Center
| | - Enza Di Gregorio
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
| | - Riccardo Abategiovanni
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
| | - Alberto Ceccon
- Department of Biotechnology
- University of Verona
- 37134 Verona, Italy
| | - Michael Assfalg
- Department of Biotechnology
- University of Verona
- 37134 Verona, Italy
| | | | - Silvio Aime
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
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15
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Ceccon A, D'Onofrio M, Zanzoni S, Longo DL, Aime S, Molinari H, Assfalg M. NMR investigation of the equilibrium partitioning of a water-soluble bile salt protein carrier to phospholipid vesicles. Proteins 2013; 81:1776-91. [DOI: 10.1002/prot.24329] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 04/29/2013] [Accepted: 05/09/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Alberto Ceccon
- Department of Biotechnology; University of Verona; 37134 Verona Italy
| | | | - Serena Zanzoni
- Department of Biotechnology; University of Verona; 37134 Verona Italy
| | - Dario Livio Longo
- Department of Molecular Biotechnologies and Health Sciences; Molecular Imaging Center, University of Torino; 10126 Torino Italy
| | - Silvio Aime
- Department of Molecular Biotechnologies and Health Sciences; Molecular Imaging Center, University of Torino; 10126 Torino Italy
| | | | - Michael Assfalg
- Department of Biotechnology; University of Verona; 37134 Verona Italy
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16
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D'Onofrio M, Gianolio E, Ceccon A, Arena F, Zanzoni S, Fushman D, Aime S, Molinari H, Assfalg M. High Relaxivity Supramolecular Adducts Between Human-Liver Fatty-Acid-Binding Protein and Amphiphilic GdIII Complexes: Structural Basis for the Design of Intracellular Targeting MRI Probes. Chemistry 2012; 18:9919-28. [DOI: 10.1002/chem.201103778] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 05/08/2012] [Indexed: 01/14/2023]
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17
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Horváth G, Király P, Tárkányi G, Toke O. Internal Motions and Exchange Processes in Human Ileal Bile Acid Binding Protein As Studied by Backbone 15N Nuclear Magnetic Resonance Spectroscopy. Biochemistry 2012; 51:1848-61. [DOI: 10.1021/bi201588q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Gergő Horváth
- Institute of Structural Chemistry, Chemical Research Center of the Hungarian Academy of Sciences, 59-67 Pusztaszeri út, Budapest, H-1025 Hungary
| | - Péter Király
- Institute of Structural Chemistry, Chemical Research Center of the Hungarian Academy of Sciences, 59-67 Pusztaszeri út, Budapest, H-1025 Hungary
| | - Gábor Tárkányi
- Institute of Structural Chemistry, Chemical Research Center of the Hungarian Academy of Sciences, 59-67 Pusztaszeri út, Budapest, H-1025 Hungary
| | - Orsolya Toke
- Institute of Structural Chemistry, Chemical Research Center of the Hungarian Academy of Sciences, 59-67 Pusztaszeri út, Budapest, H-1025 Hungary
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18
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Decca MB, Galassi VV, Perduca M, Monaco HL, Montich GG. Influence of the Lipid Phase State and Electrostatic Surface Potential on the Conformations of a Peripherally Bound Membrane Protein. J Phys Chem B 2010; 114:15141-50. [DOI: 10.1021/jp104035z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- María B. Decca
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC−CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, República Argentina, and Laboratorio di Biocrystallografia, Dipartimento Scientifico e Tecnologico, Università di Verona, Italia
| | - Vanesa V. Galassi
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC−CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, República Argentina, and Laboratorio di Biocrystallografia, Dipartimento Scientifico e Tecnologico, Università di Verona, Italia
| | - Massimiliano Perduca
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC−CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, República Argentina, and Laboratorio di Biocrystallografia, Dipartimento Scientifico e Tecnologico, Università di Verona, Italia
| | - Hugo L. Monaco
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC−CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, República Argentina, and Laboratorio di Biocrystallografia, Dipartimento Scientifico e Tecnologico, Università di Verona, Italia
| | - Guillermo G. Montich
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC−CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, República Argentina, and Laboratorio di Biocrystallografia, Dipartimento Scientifico e Tecnologico, Università di Verona, Italia
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