1
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Bellanger T, Wien F, Combet S, Varela PF, Weidmann S. The role of membrane physiology in sHSP Lo18-lipid interaction and lipochaperone activity. Sci Rep 2024; 14:17048. [PMID: 39048624 PMCID: PMC11269701 DOI: 10.1038/s41598-024-67362-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Accepted: 07/10/2024] [Indexed: 07/27/2024] Open
Abstract
To cope with environmental stresses, organisms, including lactic acid bacteria such as O. oeni, produce stress proteins called HSPs. In wine, O. oeni is constantly confronted by stress affecting its membrane fluidity. To survive through in these deleterious conditions, O. oeni synthesizes Lo18, a unique, small HSP which acts as a molecular chaperone and a lipochaperone. The molecular mechanism underlying its lipochaperone activity, particularly regarding membrane lipid composition, remains poorly understood. In this context, Lo18 lipochaperone activity and the associated modification in protein structure were studied during interaction with different liposomes from O. oeni cultures representing unstressed, stressed and stressed-adapted physiological states. The results showed that the presence of the membrane (whatever its nature) induces a modification of Lo18's structure. Also, the presence of oleic acid and/or phosphatidylglycerol is important to favor Lo18-membrane interaction, allowing lipochaperone activity. This research enhances understanding of sHSP-membrane interactions in bacterial systems.
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Affiliation(s)
- Tiffany Bellanger
- Univ. Bourgogne, UMR PAM A 02.102, Institut Agro Dijon, INRAE, 21000, Dijon, France
| | - Frank Wien
- Synchrotron SOLEIL, L'Orme Des Merisiers, Saint Aubin BP 48, 91192, Gif-Sur-Yvette, France
| | - Sophie Combet
- Laboratoire Léon-Brillouin (LLB), UMR12 CEA, CNRS, Université Paris-Saclay, 91191, Gif-Sur-Yvette CEDEX, France
| | | | - Stéphanie Weidmann
- Univ. Bourgogne, UMR PAM A 02.102, Institut Agro Dijon, INRAE, 21000, Dijon, France.
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2
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Bellanger T, da Silva Barreira D, Wien F, Delarue P, Senet P, Rieu A, Neiers F, Varela PF, Combet S, Weidmann S. Significant influence of four highly conserved amino-acids in lipochaperon-active sHsps on the structure and functions of the Lo18 protein. Sci Rep 2023; 13:19036. [PMID: 37923897 PMCID: PMC10624808 DOI: 10.1038/s41598-023-46306-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/30/2023] [Indexed: 11/06/2023] Open
Abstract
To cope with environmental stresses, bacteria have developed different strategies, including the production of small heat shock proteins (sHSP). All sHSPs are described for their role as molecular chaperones. Some of them, like the Lo18 protein synthesized by Oenococcus oeni, also have the particularity of acting as a lipochaperon to maintain membrane fluidity in its optimal state following cellular stresses. Lipochaperon activity is poorly characterized and very little information is available on the domains or amino-acids key to this activity. The aim in this paper is to investigate the importance at the protein structure and function level of four highly conserved residues in sHSP exhibiting lipochaperon activity. Thus, by combining in silico, in vitro and in vivo approaches the importance of three amino-acids present in the core of the protein was shown to maintain both the structure of Lo18 and its functions.
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Affiliation(s)
- Tiffany Bellanger
- Procédés Alimentaires et Microbiologiques (PAM), AgroSup Dijon, PAM UMR A 02.102, Laboratoire VAlMiS-IUVV, Dijon, France
| | - David da Silva Barreira
- Procédés Alimentaires et Microbiologiques (PAM), AgroSup Dijon, PAM UMR A 02.102, Laboratoire VAlMiS-IUVV, Dijon, France
| | - Frank Wien
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin BP 48, 91192, Gif-sur-Yvette, France
| | - Patrice Delarue
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303, CNRS, Université de Bourgogne Franche-Comté, 21078, Dijon, France
| | - Patrick Senet
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303, CNRS, Université de Bourgogne Franche-Comté, 21078, Dijon, France
| | - Aurélie Rieu
- Procédés Alimentaires et Microbiologiques (PAM), AgroSup Dijon, PAM UMR A 02.102, Laboratoire VAlMiS-IUVV, Dijon, France
| | - Fabrice Neiers
- Laboratory: Flavour Perception: Molecular Mechanisms (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000, Dijon, France
| | - Paloma Fernández Varela
- CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Sophie Combet
- Laboratoire Léon-Brillouin (LLB), UMR12 CEA, CNRS, Université Paris-Saclay, 91191, Gif-sur-Yvette CEDEX, France
| | - Stéphanie Weidmann
- Procédés Alimentaires et Microbiologiques (PAM), AgroSup Dijon, PAM UMR A 02.102, Laboratoire VAlMiS-IUVV, Dijon, France.
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Kathiriya MR, Vekariya YV, Hati S. Understanding the Probiotic Bacterial Responses Against Various Stresses in Food Matrix and Gastrointestinal Tract: A Review. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10104-3. [PMID: 37347421 DOI: 10.1007/s12602-023-10104-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2023] [Indexed: 06/23/2023]
Abstract
Probiotic bacteria are known to have ability to tolerate inhospitable conditions experienced during food preparation, food storage, and gastrointestinal tract of consumer. As probiotics are living cells, they are adversely affected by the harsh environment of the carrier matrix as well as low pH, bile salts, oxidative stress, osmotic pressure, and commensal microflora of the host. To overcome the unfavorable environments, many probiotics switch on the cell-mediated protection mechanisms, which helps them to survive, acclimatize and remain operational in the harsh circumstances. In this review, we provide comprehensive understanding on the different stresses experienced by the probiotic when added in carrier food as well as during human gastrointestinal tract transit. Under such situation how these health beneficial bacteria protect themselves by activation of several defense systems and get adapted to the lethal environments.
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Affiliation(s)
- Mital R Kathiriya
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand-388110, Gujarat, India
| | - Yogesh V Vekariya
- Department. of Dairy Engineering, SMC College of Dairy Science, Kamdhenu University, Anand-388110, Gujarat, India
| | - Subrota Hati
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand-388110, Gujarat, India.
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4
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Bellanger T, Weidmann S. Is the lipochaperone activity of sHSP a key to the stress response encoded in its primary sequence? Cell Stress Chaperones 2023; 28:21-33. [PMID: 36367671 PMCID: PMC9877275 DOI: 10.1007/s12192-022-01308-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022] Open
Abstract
Several strategies have been put in place by organisms to adapt to their environment. One of these strategies is the production of stress proteins such as sHSPs, which have been widely described over the last 30 years for their role as molecular chaperones. Some sHSPs have, in addition, the particularity to exert a lipochaperone role by interacting with membrane lipids to maintain an optimal membrane fluidity. However, the mechanisms involved in this sHSP-lipid interaction remain poorly understood and described rather sporadically in the literature. This review gathers the information concerning the structure and function of these proteins available in the literature in order to highlight the mechanism involved in this interaction. In addition, analysis of primary sequence data of sHSPs available in database shows that sHSPs can interact with lipids via certain amino acid residues present on some β sheets of these proteins. These residues could have a key role in the structure and/or oligomerization dynamics of sHPSs, which is certainly essential for interaction with membrane lipids and consequently for maintaining optimal cell membrane fluidity.
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Affiliation(s)
- Tiffany Bellanger
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Stéphanie Weidmann
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
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5
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Rocchetti MT, Bellanger T, Trecca MI, Weidmann S, Scrima R, Spano G, Russo P, Capozzi V, Fiocco D. Molecular chaperone function of three small heat-shock proteins from a model probiotic species. Cell Stress Chaperones 2023; 28:79-89. [PMID: 36417097 PMCID: PMC9877261 DOI: 10.1007/s12192-022-01309-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/05/2022] [Accepted: 10/31/2022] [Indexed: 11/24/2022] Open
Abstract
Small heat-shock proteins (sHSP) are ubiquitous ATP-independent chaperones that prevent irreversible aggregation of heat-damaged denaturing proteins. Lactiplantibacillus plantarum is a widespread Gram-positive bacterium with probiotic claims and vast potential for agro-food, biotechnological and biomedical applications. L. plantarum possesses a family of three sHSP, which were previously demonstrated to be involved in its stress tolerance mechanisms. Here, the three L. plantarum sHSP were heterologously expressed, purified and shown to have a chaperone activity in vitro, measuring their capacity to suppress protein aggregation, as assayed spectrophotometrically by light scattering. Their anti-aggregative capacity was found to be differently influenced by pH. Differences were also found relative to their holdase function and their capacity to modulate liposome membrane fluidity, suggesting interplays between them and indicating diversified activities. This is the first study assessing the chaperone action of sHSP from a probiotic model. The different roles of the three sHSP can increase L. plantarum's capabilities to survive the various types of stress characterising the diverse habitats of this highly adaptable species. Reported evidence supports the interest in L. plantarum as one of the model species for bacteria that have three different sHSP-encoding genes in their genomes.
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Affiliation(s)
- Maria Teresa Rocchetti
- Department of Clinical and Experimental Medicine, University of Foggia, Via Pinto 1, 71122, Foggia, Italy
| | - Tiffany Bellanger
- Univ. Bourgogne, Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Maria Incoronata Trecca
- Department of Clinical and Experimental Medicine, University of Foggia, Via Pinto 1, 71122, Foggia, Italy
| | - Stephanie Weidmann
- Univ. Bourgogne, Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Rosella Scrima
- Department of Clinical and Experimental Medicine, University of Foggia, Via Pinto 1, 71122, Foggia, Italy
| | - Giuseppe Spano
- Department of Agriculture Food Natural Science Engineering (DAFNE), University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Pasquale Russo
- Department of Agriculture Food Natural Science Engineering (DAFNE), University of Foggia, Via Napoli 25, 71122, Foggia, Italy
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Via Luigi Mangiagalli 25, 20133, Milano, Italy
| | - Vittorio Capozzi
- Institute of Sciences of Food Production, National Research Council (CNR) of Italy, C/O CS-DAT, Via Michele Protano, 71122, Foggia, Italy
| | - Daniela Fiocco
- Department of Clinical and Experimental Medicine, University of Foggia, Via Pinto 1, 71122, Foggia, Italy.
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Onetto CA, Costello PJ, Kolouchova R, Jordans C, McCarthy J, Schmidt SA. Analysis of Transcriptomic Response to SO 2 by Oenococcus oeni Growing in Continuous Culture. Microbiol Spectr 2021; 9:e0115421. [PMID: 34612664 PMCID: PMC8510247 DOI: 10.1128/spectrum.01154-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/31/2021] [Indexed: 01/01/2023] Open
Abstract
To successfully complete malolactic fermentation (MLF), Oenococcus oeni must overcome wine stress conditions of low pH, high ethanol, and the presence of SO2. Failure to complete MLF may result in detrimental effects to the quality and stability of the resulting wines. Research efforts to date have focused on elucidating the mechanisms and genetic features that confer the ability to withstand low pH and high ethanol concentrations on O. oeni; however, the responses to SO2 stress are less well defined. This study focused on characterizing the transcriptional response of O. oeni to SO2 challenge during cultivation in a continuous system at wine-like pH (3.5). This experimental design allowed the precise discrimination of transcriptional changes linked to SO2 stress from responses associated with growth stage and cultivation parameters. Differential gene expression analysis revealed major transcriptional changes following SO2 exposure and suggested that this compound primarily interacts with intracellular proteins, DNA, and the cell envelope of O. oeni. The molecular chaperone hsp20, which has a demonstrated function in the heat, ethanol, and acid stress response, was highly upregulated, confirming its additional role in the response of this species to SO2 stress. This work also reports the first nanopore-based complete genome assemblies for O. oeni. IMPORTANCE Malolactic fermentation is an indispensable step in the elaboration of most wines and is generally performed by Oenococcus oeni, a Gram-positive heterofermentative lactic acid bacterium species. While O. oeni is tolerant to many of the wine stresses, including low pH and high ethanol concentrations, it has high sensitivity to SO2, an antiseptic and antioxidant compound regularly used in winemaking. Understanding the physiological changes induced in O. oeni by SO2 stress is essential for the development of more robust starter cultures and methods for their use. This study describes the main transcriptional changes induced by SO2 stress in the wine bacterium O. oeni and provides foundational understanding on how this compound interacts with the cellular components and the induced protective mechanisms of this species.
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Affiliation(s)
- Cristobal A. Onetto
- The Australian Wine Research Institute, Glen Osmond, South Australia, Australia
| | - Peter J. Costello
- The Australian Wine Research Institute, Glen Osmond, South Australia, Australia
| | - Radka Kolouchova
- The Australian Wine Research Institute, Glen Osmond, South Australia, Australia
| | - Charlotte Jordans
- The Australian Wine Research Institute, Glen Osmond, South Australia, Australia
| | - Jane McCarthy
- The Australian Wine Research Institute, Glen Osmond, South Australia, Australia
| | - Simon A. Schmidt
- The Australian Wine Research Institute, Glen Osmond, South Australia, Australia
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7
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Roy M, Bhakta K, Bhowmick A, Gupta S, Ghosh A, Ghosh A. Archaeal Hsp14 drives substrate shuttling between small heat shock proteins and thermosome: insights into a novel substrate transfer pathway. FEBS J 2021; 289:1080-1104. [PMID: 34637594 DOI: 10.1111/febs.16226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/26/2021] [Accepted: 10/11/2021] [Indexed: 12/25/2022]
Abstract
Heat shock proteins maintain protein homeostasis and facilitate the survival of an organism under stress. Archaeal heat shock machinery usually consists of only sHsps, Hsp70, and Hsp60. Moreover, Hsp70 is absent in thermophilic and hyperthermophilic archaea. In the absence of Hsp70, how aggregating protein substrates are transferred to Hsp60 for refolding remains elusive. Here, we investigated the crosstalk in the heat shock response pathway of thermoacidophilic crenarchaeon Sulfolobus acidocaldarius. In the present study, we biophysically and biochemically characterized one of the small heat shock proteins, Hsp14, of S. acidocaldarius. Moreover, we investigated its ability to interact with Hsp20 and Hsp60 to facilitate the substrate proteins' folding under stress conditions. Like Hsp20, we demonstrated that the dimer is the active form of Hsp14, and it forms an oligomeric storage form at a higher temperature. More importantly, the dynamics of the Hsp14 oligomer are maintained by rapid subunit exchange between the dimeric states, and the rate of subunit exchange increases with increasing temperature. We also tested the ability of Hsp14 to form hetero-oligomers via subunit exchange with Hsp20. We observed hetero-oligomer formation only at higher temperatures (50 °C-70 °C). Furthermore, experiments were performed to investigate the interaction between small heat shock proteins and Hsp60. We demonstrated an enthalpy-driven direct physical interaction between Hsp14 and Hsp60. Our results revealed that Hsp14 could transfer sHsp-captured substrate proteins to Hsp60, which then refolds them back to their active form.
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Affiliation(s)
- Mousam Roy
- Department of Biochemistry, Bose Institute, Kolkata, India
| | - Koustav Bhakta
- Department of Biochemistry, Bose Institute, Kolkata, India
| | | | | | - Anupama Ghosh
- Division of Plant Biology, Bose Institute, Kolkata, India
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8
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Obuchowski I, Karaś P, Liberek K. The Small Ones Matter-sHsps in the Bacterial Chaperone Network. Front Mol Biosci 2021; 8:666893. [PMID: 34055885 PMCID: PMC8155344 DOI: 10.3389/fmolb.2021.666893] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/28/2021] [Indexed: 11/22/2022] Open
Abstract
Small heat shock proteins (sHsps) are an evolutionarily conserved class of ATP-independent chaperones that form the first line of defence during proteotoxic stress. sHsps are defined not only by their relatively low molecular weight, but also by the presence of a conserved α-crystallin domain, which is flanked by less conserved, mostly unstructured, N- and C-terminal domains. sHsps form oligomers of different sizes which deoligomerize upon stress conditions into smaller active forms. Activated sHsps bind to aggregation-prone protein substrates to form assemblies that keep substrates from irreversible aggregation. Formation of these assemblies facilitates subsequent Hsp70 and Hsp100 chaperone-dependent disaggregation and substrate refolding into native species. This mini review discusses what is known about the role and place of bacterial sHsps in the chaperone network.
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Affiliation(s)
- Igor Obuchowski
- Intercollegiate Faculty of Biotechnology UG-MUG, University of Gdansk, Gdansk, Poland
| | | | - Krzysztof Liberek
- Intercollegiate Faculty of Biotechnology UG-MUG, University of Gdansk, Gdansk, Poland
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9
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Longo A, Russo P, Capozzi V, Spano G, Fiocco D. Knock out of sHSP genes determines some modifications in the probiotic attitude of Lactiplantibacillus plantarum. Biotechnol Lett 2020; 43:645-654. [PMID: 33156458 PMCID: PMC7872990 DOI: 10.1007/s10529-020-03041-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/27/2020] [Indexed: 01/18/2023]
Abstract
OBJECTIVE We investigated whether the knock out of small heat shock protein (sHSP) genes (hsp1, hsp2 and hsp3) impact on probiotic features of Lactiplantibacillus plantarum WCFS1, aiming to find specific microbial effectors involved in microbe-host interplay. RESULTS The probiotic properties of L. plantarum WCFS1 wild type, hsp1, hsp2 and hsp3 mutant clones were evaluated and compared through in vitro trials. Oro-gastro-intestinal assays pointed to significantly lower survival for hsp1 and hsp2 mutants under stomach-like conditions, and for hsp3 mutant under intestinal stress. Adhesion to human enterocyte-like cells was similar for all clones, though the hsp2 mutant exhibited higher adhesiveness. L. plantarum cells attenuated the transcriptional induction of pro-inflammatory cytokines on lipopolysaccharide-treated human macrophages, with some exception for the hsp1 mutant. Intriguingly, this clone also induced a higher IL10/IL12 ratio, which is assumed to indicate the anti-inflammatory potential of probiotics. CONCLUSIONS sHSP genes deletion determined some differences in gut stress resistance, cellular adhesion and immuno-modulation, also implying effects on in vivo interaction with the host. HSP1 might contribute to immunomodulatory mechanisms, though additional experiments are necessary to test this feature.
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Affiliation(s)
- Angela Longo
- SAFE Department, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Pasquale Russo
- SAFE Department, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Vittorio Capozzi
- Institute of Sciences of Food Production, National Research Council (CNR) of Italy, c/o CS-DAT, Via Michele Protano, 71121, Foggia, Italy
| | - Giuseppe Spano
- SAFE Department, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Daniela Fiocco
- Department of Clinical and Experimental Medicine, Universiy of Foggia, Viale Pinto 1, 71122, Foggia, Italy.
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10
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Obuchowski I, Liberek K. Small but mighty: a functional look at bacterial sHSPs. Cell Stress Chaperones 2020; 25:593-600. [PMID: 32301005 PMCID: PMC7332594 DOI: 10.1007/s12192-020-01094-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2020] [Indexed: 02/02/2023] Open
Abstract
Small heat shock proteins (sHSPs) are widespread in every kingdom of life, being indispensable for protein quality control networks. Alongside canonical chaperone functions, sHSPs seem to have been a very plastic scaffold for acquiring multiple related functions across evolution. This review aims to summarize what is known about sHSPs functioning in the Bacteria Kingdom.
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Affiliation(s)
- Igor Obuchowski
- Intercollegiate Faculty of Biotechnology UG-MUG, University of Gdansk, Abrahama 58, 80-307, Gdansk, Poland.
| | - Krzysztof Liberek
- Intercollegiate Faculty of Biotechnology UG-MUG, University of Gdansk, Abrahama 58, 80-307, Gdansk, Poland
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11
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The functional diversity of structural disorder in plant proteins. Arch Biochem Biophys 2019; 680:108229. [PMID: 31870661 DOI: 10.1016/j.abb.2019.108229] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 12/05/2019] [Accepted: 12/17/2019] [Indexed: 12/29/2022]
Abstract
Structural disorder in proteins is a widespread feature distributed in all domains of life, particularly abundant in eukaryotes, including plants. In these organisms, intrinsically disordered proteins (IDPs) perform a diversity of functions, participating as integrators of signaling networks, in transcriptional and post-transcriptional regulation, in metabolic control, in stress responses and in the formation of biomolecular condensates by liquid-liquid phase separation. Their roles impact the perception, propagation and control of various developmental and environmental cues, as well as the plant defense against abiotic and biotic adverse conditions. In this review, we focus on primary processes to exhibit a broad perspective of the relevance of IDPs in plant cell functions. The information here might help to incorporate this knowledge into a more dynamic view of plant cells, as well as open more questions and promote new ideas for a better understanding of plant life.
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12
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Zhao H, Yuan L, Hu K, Liu L, Peng S, Li H, Wang H. Heterologous expression of ctsR from Oenococcus oeni enhances the acid-ethanol resistance of Lactobacillus plantarum. FEMS Microbiol Lett 2019; 366:5561440. [DOI: 10.1093/femsle/fnz192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/03/2019] [Indexed: 11/13/2022] Open
Abstract
Abstract
Oenococcus oeni is a lactic acid bacterium that is widely used in wine-making to conduct malolactic fermentation (MLF). During MLF, O. oeni undergoes acid and ethanol stress that impairs its growth. In order to investigate the role that the ctsR gene plays in acid-ethanol stress, the ctsR gene from O. oeni was expressed heterologously in L. plantarum. The transcription level of the ctsR gene and 10 additional stress response genes in L. plantarum were analyzed by RT-qPCR. Physiological assays to assess ROS accumulation, cell membrane integrity, intracellular ATP and GSH levels, Ca2+/Mg2+-ATPase and Na+/K+-ATPase activities were also performed. Results showed that the recombinant strain WCFS1-CtsR exhibited stronger growth performance than the control strain WCFS1-Vector, and the expression of ctsR, clp, and hsp genes were significantly increased under acid-ethanol stress. Furthermore, WCFS1-CtsR displayed 1.08-, and 1.39-fold higher ATP and GSH concentrations, respectively, compared to the corresponding values for WCFS1-Vector under acid-ethanol stress. ROS accumulation and PI value of WCFS1-CtsR were decreased by 46.52% and 42.80%, respectively, compared to the control strain. In addition, the two ATPase activities in WCFS1-CtsR increased significantly compared with WCFS1-Vector. This is the first report demonstrating that ctsR gene enhances the acid-ethanol tolerance of L. plantarum.
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Affiliation(s)
- Hongyu Zhao
- College of Enology, Northwest A & F University, Yangling, China
| | - Lin Yuan
- College of Enology, Northwest A & F University, Yangling, China
| | - Kai Hu
- College of Enology, Northwest A & F University, Yangling, China
| | - Longxiang Liu
- Shandong Engineering and Technology Research Center for Ecological Fragile Belt of Yellow River Delta, Binzhou, China
| | - Shuai Peng
- College of Enology, Northwest A & F University, Yangling, China
| | - Hua Li
- College of Enology, Northwest A & F University, Yangling, China
- Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, China
- Heyang Experimental and Demonstrational Stations for Grape, Weinan, China
| | - Hua Wang
- College of Enology, Northwest A & F University, Yangling, China
- Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, China
- Heyang Experimental and Demonstrational Stations for Grape, Weinan, China
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13
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Arena MP, Capozzi V, Longo A, Russo P, Weidmann S, Rieu A, Guzzo J, Spano G, Fiocco D. The Phenotypic Analysis of Lactobacillus plantarum shsp Mutants Reveals a Potential Role for hsp1 in Cryotolerance. Front Microbiol 2019; 10:838. [PMID: 31114549 PMCID: PMC6503756 DOI: 10.3389/fmicb.2019.00838] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 04/01/2019] [Indexed: 11/23/2022] Open
Abstract
Small heat shock proteins (sHSPs) are ubiquitous, low molecular weight (MW) proteins that share a conserved alpha-crystallin domain. sHSPs oligomers exhibit chaperon-like activities by interacting with unfolded substrates, thereby preventing their aggregation and precipitation. Unlike most lactobacilli, which have single shsp genes, three different sHSP-encoding genes, i.e., hsp1, hsp2, and hsp3, were previously identified in the probiotic Lactobacillus plantarum WCFS1. Early studies, including the characterization of the knock out (KO) mutant for hsp2, indicated a different organization and transcriptional regulation of these genes and suggested that the three L. plantarum sHSPs might accomplish different tasks in stress response. To unravel the role of sHSPs, KO mutants of hsp1 and hsp3 were generated using a Cre-lox based system. Mutation of either genes resulted in impaired growth capacity under normal conditions, heat-stress and stresses typically found during host interactions and food technological process. However, survival to heat shock and the level of thermal stabilization of cytoplasmic proteins were similar between mutants and parental strain. Transcriptional analysis revealed that in the mutant genetic backgrounds there is an upregulated basal expression of the un-mutated mate hsps and other stress-related genes, which may compensate for the loss of HSP function, hence possibly accounting for the lack of a remarkable susceptibility to heat challenge. HSP3 seemed relevant for the induction of thermotolerance, while HSP1 was required for improved cryotolerance. Cell surface properties and plasma membrane fluidity were investigated to ascertain the possible membrane association of sHSP. Intriguingly, the loss of hsp1 was associated to a lower level of maximal membrane fluidity upon heat stress. A role for HSP1 in controlling and improving membrane fluidity is suggested which may pertains its cryoprotective function.
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Affiliation(s)
- Mattia Pia Arena
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Vittorio Capozzi
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Angela Longo
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Pasquale Russo
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Stephanie Weidmann
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Aurélie Rieu
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Jean Guzzo
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Giuseppe Spano
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Daniela Fiocco
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
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14
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Fiocco D, Longo A, Arena MP, Russo P, Spano G, Capozzi V. How probiotics face food stress: They get by with a little help. Crit Rev Food Sci Nutr 2019; 60:1552-1580. [DOI: 10.1080/10408398.2019.1580673] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Daniela Fiocco
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Angela Longo
- Department of Agriculture Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Mattia Pia Arena
- Department of Agriculture Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Pasquale Russo
- Department of Agriculture Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Giuseppe Spano
- Department of Agriculture Food and Environment Sciences, University of Foggia, Foggia, Italy
| | - Vittorio Capozzi
- Department of Agriculture Food and Environment Sciences, University of Foggia, Foggia, Italy
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15
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Carra S, Alberti S, Benesch JLP, Boelens W, Buchner J, Carver JA, Cecconi C, Ecroyd H, Gusev N, Hightower LE, Klevit RE, Lee HO, Liberek K, Lockwood B, Poletti A, Timmerman V, Toth ME, Vierling E, Wu T, Tanguay RM. Small heat shock proteins: multifaceted proteins with important implications for life. Cell Stress Chaperones 2019; 24:295-308. [PMID: 30758704 PMCID: PMC6439001 DOI: 10.1007/s12192-019-00979-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2019] [Indexed: 12/21/2022] Open
Abstract
Small Heat Shock Proteins (sHSPs) evolved early in the history of life; they are present in archaea, bacteria, and eukaryota. sHSPs belong to the superfamily of molecular chaperones: they are components of the cellular protein quality control machinery and are thought to act as the first line of defense against conditions that endanger the cellular proteome. In plants, sHSPs protect cells against abiotic stresses, providing innovative targets for sustainable agricultural production. In humans, sHSPs (also known as HSPBs) are associated with the development of several neurological diseases. Thus, manipulation of sHSP expression may represent an attractive therapeutic strategy for disease treatment. Experimental evidence demonstrates that enhancing the chaperone function of sHSPs protects against age-related protein conformation diseases, which are characterized by protein aggregation. Moreover, sHSPs can promote longevity and healthy aging in vivo. In addition, sHSPs have been implicated in the prognosis of several types of cancer. Here, sHSP upregulation, by enhancing cellular health, could promote cancer development; on the other hand, their downregulation, by sensitizing cells to external stressors and chemotherapeutics, may have beneficial outcomes. The complexity and diversity of sHSP function and properties and the need to identify their specific clients, as well as their implication in human disease, have been discussed by many of the world's experts in the sHSP field during a dedicated workshop in Québec City, Canada, on 26-29 August 2018.
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Affiliation(s)
- Serena Carra
- Department of Biomedical, Metabolic and Neural Sciences, and Centre for Neuroscience and Nanotechnology, University of Modena and Reggio Emilia, via G. Campi 287, 41125, Modena, Italy.
| | - Simon Alberti
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307, Dresden, Germany
- Center for Molecular and Cellular Bioengineering (CMCB), Biotechnology Center (BIOTEC), Technische Universität Dresden, Tatzberg 47/49, 01307, Dresden, Germany
| | - Justin L P Benesch
- Department of Chemistry, Physical and Theoretical Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Wilbert Boelens
- Department of Biomolecular Chemistry, Institute of Molecules and Materials, Radboud University, NL-6500, Nijmegen, The Netherlands
| | - Johannes Buchner
- Center for Integrated Protein Science Munich (CIPSM) and Department Chemie, Technische Universität München, D-85748, Garching, Germany
| | - John A Carver
- Research School of Chemistry, The Australian National University, Acton, ACT, 2601, Australia
| | - Ciro Cecconi
- Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, 41125, Modena, Italy
- Center S3, CNR Institute Nanoscience, Via Campi 213/A, 41125, Modena, Italy
| | - Heath Ecroyd
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - Nikolai Gusev
- Department of Biochemistry, School of Biology, Moscow State University, Moscow, Russian Federation, 117234
| | - Lawrence E Hightower
- Department of Molecular and Cell Biology, University of Connecticut, 91 North Eagleville Road, Storrs, CT, 06269-3125, USA
| | - Rachel E Klevit
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Hyun O Lee
- Department of Biochemistry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Krzysztof Liberek
- Department of Molecular and Cellular Biology, Intercollegiate Faculty of Biotechnology UG-MUG, University of Gdansk, Abrahama 58, 80-307, Gdansk, Poland
| | - Brent Lockwood
- Department of Biology, University of Vermont, Burlington, VT, 05405, USA
| | - Angelo Poletti
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Univrsità degli Studi di Milano, Milan, Italy
| | - Vincent Timmerman
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, 2610, Antwerp, Belgium
| | - Melinda E Toth
- Institute of Biochemistry, Biological Research Center, Hungarian Academy of Sciences, Szeged, Hungary
| | - Elizabeth Vierling
- Department of Biochemistry and Molecular Biology, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Tangchun Wu
- MOE Key Lab of Environment and Health, Tongji School of Public Health, Huazhong University of Science and Technology, 13 Hangkong Rd, Wuhan, 430030, Hubei, China
| | - Robert M Tanguay
- Laboratory of Cell and Developmental Genetics, IBIS, and Department of Molecular Biology, Medical Biochemistry and Pathology, Medical School, Université Laval, QC, Québec, G1V 0A6, Canada.
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16
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Roy M, Gupta S, Patranabis S, Ghosh A. The oligomeric plasticity of Hsp20 of Sulfolobus acidocaldarius protects environment-induced protein aggregation and membrane destabilization. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2549-2565. [PMID: 30293966 DOI: 10.1016/j.bbamem.2018.09.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/29/2018] [Accepted: 09/05/2018] [Indexed: 12/21/2022]
Abstract
Small heat shock proteins (sHsps) are a ubiquitous family of molecular chaperones that rescue misfolded proteins from irreversible aggregation during cellular stress. Many such sHsps exist as large polydisperse species in solution, and a rapid dynamic subunit exchange between oligomeric and dissociated forms modulates their function under a variety of stress conditions. Here, we investigated the structural and functional properties of Hsp20 from thermoacidophilic crenarchaeon Sulfolobus acidocaldarius. To provide a framework for investigating the structure-function relationship of Hsp20 and understanding its dynamic nature, we employed several biophysical and biochemical techniques. Our data suggested the existence of a ~24-mer of Hsp20 at room temperature (25 °C) and a higher oligomeric form at higher temperature (50 °C-70 °C) and lower pH (3.0-5.0). To our surprise, we identified a dimeric form of protein as the functional conformation in the presence of aggregating substrate proteins. The hydrophobic microenvironment mainly regulates the oligomeric plasticity of Hsp20, and it plays a key role in the protection of stress-induced protein aggregation. In Sulfolobus sp., Hsp20, despite being a non-secreted protein, has been reported to be present in secretory vesicles and it is still unclear whether it stabilizes substrate proteins or membrane lipids within the secreted vesicles. To address such an issue, we tested the ability of Hsp20 to interact with membrane lipids along with its ability to modulate membrane fluidity. Our data revealed that Hsp20 interacts with membrane lipids via a hydrophobic interaction and it lowers the propensity of in vitro phase transition of bacterial and archaeal lipids.
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Affiliation(s)
- Mousam Roy
- Department of Biochemistry, Bose Institute, Centenary Campus, P 1/12, C. I. T. Road, Scheme - VIIM, Kolkata 700054, West Bengal, India
| | - Sayandeep Gupta
- Department of Biochemistry, Bose Institute, Centenary Campus, P 1/12, C. I. T. Road, Scheme - VIIM, Kolkata 700054, West Bengal, India
| | - Somi Patranabis
- Department of Biochemistry, Bose Institute, Centenary Campus, P 1/12, C. I. T. Road, Scheme - VIIM, Kolkata 700054, West Bengal, India
| | - Abhrajyoti Ghosh
- Department of Biochemistry, Bose Institute, Centenary Campus, P 1/12, C. I. T. Road, Scheme - VIIM, Kolkata 700054, West Bengal, India.
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17
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Weidmann S, Maitre M, Laurent J, Coucheney F, Rieu A, Guzzo J. Production of the small heat shock protein Lo18 from Oenococcus oeni in Lactococcus lactis improves its stress tolerance. Int J Food Microbiol 2017; 247:18-23. [DOI: 10.1016/j.ijfoodmicro.2016.06.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 05/30/2016] [Accepted: 06/05/2016] [Indexed: 11/17/2022]
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18
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Grandvalet C. Oenococcus oeni: Queen of the cellar, nightmare of geneticists. Microbiology (Reading) 2017; 163:297-299. [DOI: 10.1099/mic.0.000456] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Cosette Grandvalet
- PAM, UMR A 02.102, Univ. Bourgogne Franche-Comté, AgroSup Dijon, F-21000 Dijon, France
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19
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Thurotte A, Brüser T, Mascher T, Schneider D. Membrane chaperoning by members of the PspA/IM30 protein family. Commun Integr Biol 2017. [PMCID: PMC5333519 DOI: 10.1080/19420889.2016.1264546] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
PspA, IM30 (Vipp1) and LiaH, which all belong to the PspA/IM30 protein family, form high molecular weight oligomeric structures. For all proteins membrane binding and protection of the membrane structure and integrity has been shown or postulated. Here we discuss the possible membrane chaperoning activity of PspA, IM30 and LiaH and propose that larger oligomeric structures bind to stressed membrane regions, followed by oligomer disassembly and membrane stabilization by protein monomers or smaller/different oligomeric scaffolds.
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Affiliation(s)
- Adrien Thurotte
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Thomas Brüser
- Institut für Mikrobiologie, Leibniz Universität Hannover, Hannover, Germany
| | - Thorsten Mascher
- Institut für Mikrobiologie, Technische Universität Dresden, Dresden, Germany
| | - Dirk Schneider
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Mainz, Germany
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20
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Bastard A, Coelho C, Briandet R, Canette A, Gougeon R, Alexandre H, Guzzo J, Weidmann S. Effect of Biofilm Formation by Oenococcus oeni on Malolactic Fermentation and the Release of Aromatic Compounds in Wine. Front Microbiol 2016; 7:613. [PMID: 27199942 PMCID: PMC4846790 DOI: 10.3389/fmicb.2016.00613] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 04/13/2016] [Indexed: 11/25/2022] Open
Abstract
The winemaking process involves the alcoholic fermentation of must, often followed by malolactic fermentation (MLF). The latter, mainly carried out by the lactic acid bacterium Oenococcus oeni, is used to improve wine quality when acidity reduction is required. Moreover, it prevents microbial spoilage and improves the wine’s organoleptic profile. Prior observations showed that O. oeni is able to resist several months in harsh wine conditions when adhered on oak barrels. Since biofilm is a prevailing microbial lifestyle in natural environments, the capacity of O. oeni to form biofilms was investigated on winemaking material such as stainless steel and oak chips. Scanning Electron Microscopy and Confocal Laser Scanning Microscopy showed that O. oeni was able to adhere to these surfaces and form spatially organized microcolonies embedded in extracellular substances. To assess the competitive advantage of this mode of life in wine, the properties of biofilm and planktonic cells were compared after inoculation in a fermented must (pH 3.5 or 3.2 and 12% ethanol) The results indicated that the biofilm culture of O. oeni conferred (i) increased tolerance to wine stress, and (ii) functional performance with effective malolactic activities. Relative gene expression focusing on stress genes and genes involved in EPS synthesis was investigated in a mature biofilm and emphasized the role of the matrix in increased biofilm resistance. As oak is commonly used in wine aging, we focused on the O. oeni biofilm on this material and its contribution to the development of wine color and the release of aromatic compounds. Analytical chromatography was used to target the main oak aging compounds such as vanillin, gaiacol, eugenol, whisky-lactones, and furfural. The results reveal that O. oeni biofilm developed on oak can modulate the wood-wine transfer of volatile aromatic compounds during MLF and aging by decreasing furfural, gaiacol, and eugenol in particular. This work showed that O. oeni forms biofilms consisting of stress-tolerant cells capable of efficient MLF under winemaking conditions. Therefore surface-associated behaviors should be considered in the development of improved strategies for the control of MLF in wine.
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Affiliation(s)
- Alexandre Bastard
- UMR A PAM Université Bourgogne Franche-Comté - AgroSup Dijon - Equipe Vin, Aliment, Microbiologie Dijon, France
| | - Christian Coelho
- UMR A PAM Université Bourgogne Franche-Comté - AgroSup Dijon - Equipe Procédés Alimentaires et Physico-Chimie Dijon, France
| | - Romain Briandet
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay Jouy-en-Josas, France
| | - Alexis Canette
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay Jouy-en-Josas, France
| | - Régis Gougeon
- UMR A PAM Université Bourgogne Franche-Comté - AgroSup Dijon - Equipe Procédés Alimentaires et Physico-Chimie Dijon, France
| | - Hervé Alexandre
- UMR A PAM Université Bourgogne Franche-Comté - AgroSup Dijon - Equipe Vin, Aliment, Microbiologie Dijon, France
| | - Jean Guzzo
- UMR A PAM Université Bourgogne Franche-Comté - AgroSup Dijon - Equipe Vin, Aliment, Microbiologie Dijon, France
| | - Stéphanie Weidmann
- UMR A PAM Université Bourgogne Franche-Comté - AgroSup Dijon - Equipe Vin, Aliment, Microbiologie Dijon, France
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21
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Biophysical and physiological characterization of ZraP from Escherichia coli, the periplasmic accessory protein of the atypical ZraSR two-component system. Biochem J 2015; 472:205-16. [DOI: 10.1042/bj20150827] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 10/05/2015] [Indexed: 12/20/2022]
Abstract
ZraP is an octamer containing four interfacial metal-binding sites contributing to dimer stability. Zinc binding enhances its chaperone properties and zinc-bound ZraP represses the expression of the zraPSR operon. None of the Zra proteins are involved in zinc resistance.
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22
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The Antisense RNA Approach: a New Application for In Vivo Investigation of the Stress Response of Oenococcus oeni, a Wine-Associated Lactic Acid Bacterium. Appl Environ Microbiol 2015; 82:18-26. [PMID: 26452552 DOI: 10.1128/aem.02495-15] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/01/2015] [Indexed: 11/20/2022] Open
Abstract
Oenococcus oeni is a wine-associated lactic acid bacterium mostly responsible for malolactic fermentation in wine. In wine, O. oeni grows in an environment hostile to bacterial growth (low pH, low temperature, and ethanol) that induces stress response mechanisms. To survive, O. oeni is known to set up transitional stress response mechanisms through the synthesis of heat stress proteins (HSPs) encoded by the hsp genes, notably a unique small HSP named Lo18. Despite the availability of the genome sequence, characterization of O. oeni genes is limited, and little is known about the in vivo role of Lo18. Due to the lack of genetic tools for O. oeni, an efficient expression vector in O. oeni is still lacking, and deletion or inactivation of the hsp18 gene is not presently practicable. As an alternative approach, with the goal of understanding the biological function of the O. oeni hsp18 gene in vivo, we have developed an expression vector to produce antisense RNA targeting of hsp18 mRNA. Recombinant strains were exposed to multiple stresses inducing hsp18 gene expression: heat shock and acid shock. We showed that antisense attenuation of hsp18 affects O. oeni survival under stress conditions. These results confirm the involvement of Lo18 in heat and acid tolerance of O. oeni. Results of anisotropy experiments also confirm a membrane-protective role for Lo18, as previous observations had already suggested. This study describes a new, efficient tool to demonstrate the use of antisense technology for modulating gene expression in O. oeni.
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23
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Costantini A, Rantsiou K, Majumder A, Jacobsen S, Pessione E, Svensson B, Garcia-Moruno E, Cocolin L. Complementing DIGE proteomics and DNA subarray analyses to shed light on Oenococcus oeni adaptation to ethanol in wine-simulated conditions. J Proteomics 2015; 123:114-27. [DOI: 10.1016/j.jprot.2015.04.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/08/2015] [Accepted: 04/09/2015] [Indexed: 01/27/2023]
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24
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Chang Z. Understanding What Small Heat Shock Proteins Do for Bacterial Cells. HEAT SHOCK PROTEINS 2015. [DOI: 10.1007/978-3-319-16077-1_22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Adaptation of the wine bacterium Oenococcus oeni to ethanol stress: role of the small heat shock protein Lo18 in membrane integrity. Appl Environ Microbiol 2014; 80:2973-80. [PMID: 24584255 DOI: 10.1128/aem.04178-13] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Malolactic fermentation in wine is often carried out by Oenococcus oeni. Wine is a stressful environment for bacteria because ethanol is a toxic compound that impairs the integrity of bacterial membranes. The small heat shock protein (sHsp) Lo18 is an essential actor of the stress response in O. oeni. Lo18 prevents the thermal aggregation of proteins and plays a crucial role in membrane quality control. Here, we investigated the interaction between Lo18 and four types of liposomes: one was prepared from O. oeni grown under optimal growth conditions (here, control liposomes), one was prepared from O. oeni grown in the presence of 8% ethanol (here, ethanol liposomes), one was prepared from synthetic phospholipids, and one was prepared from phospholipids from Bacillus subtilis or Lactococcus lactis. We observed the strongest interaction between Lo18 and control liposomes. The lipid binding activity of Lo18 required the dissociation of oligomeric structures into dimers. Protein protection experiments carried out in the presence of the liposomes from O. oeni suggested that Lo18 had a higher affinity for control liposomes than for a model protein. In anisotropy experiments, we mimicked ethanol action by temperature-dependent fluidization of the liposomes. Results suggest that the principal determinant of Lo18-membrane interaction is lipid bilayer phase behavior rather than phospholipid composition. We suggest a model to describe the ethanol adaptation of O. oeni. This model highlights the dual role of Lo18 in the protection of proteins from aggregation and membrane stabilization and suggests how modifications of phospholipid content may be a key factor determining the balance between these two functions.
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26
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Fu X, Chang Z, Shi X, Bu D, Wang C. Multilevel structural characteristics for the natural substrate proteins of bacterial small heat shock proteins. Protein Sci 2013; 23:229-37. [PMID: 24318917 DOI: 10.1002/pro.2404] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/01/2013] [Accepted: 12/02/2013] [Indexed: 01/14/2023]
Abstract
Small heat shock proteins (sHSPs) are ubiquitous molecular chaperones that prevent the aggregation of various non-native proteins and play crucial roles for protein quality control in cells. It is poorly understood what natural substrate proteins, with respect to structural characteristics, are preferentially bound by sHSPs in cells. Here we compared the structural characteristics for the natural substrate proteins of Escherichia coli IbpB and Deinococcus radiodurans Hsp20.2 with the respective bacterial proteome at multiple levels, mainly by using bioinformatics analysis. Data indicate that both IbpB and Hsp20.2 preferentially bind to substrates of high molecular weight or moderate acidity. Surprisingly, their substrates contain abundant charged residues but not abundant hydrophobic residues, thus strongly indicating that ionic interactions other than hydrophobic interactions also play crucial roles for the substrate recognition and binding of sHSPs. Further, secondary structure prediction analysis indicates that the substrates of low percentage of β-sheets or coils but high percentage of α-helices are un-favored by both IbpB and Hsp20.2. In addition, IbpB preferentially interacts with multi-domain proteins but unfavorably with α + β proteins as revealed by SCOP analysis. Together, our data suggest that bacterial sHSPs, though having broad substrate spectrums, selectively bind to substrates of certain structural features. These structural characteristic elements may substantially participate in the sHSP-substrate interaction and/or increase the aggregation tendency of the substrates, thus making the substrates more preferentially bound by sHSPs.
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Affiliation(s)
- Xinmiao Fu
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing, 100871, China
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27
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Xi D, Wei P, Zhang C, Lai L. The minimal α-crystallin domain of Mj Hsp16.5 is functional at non-heat-shock conditions. Proteins 2013; 82:1156-67. [DOI: 10.1002/prot.24480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 10/28/2013] [Accepted: 11/09/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Dong Xi
- BNLMS; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
- Center for Quantitative Biology; Peking University; Beijing 100871 China
| | - Ping Wei
- Center for Quantitative Biology; Peking University; Beijing 100871 China
| | - Changsheng Zhang
- BNLMS; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Luhua Lai
- BNLMS; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
- Center for Quantitative Biology; Peking University; Beijing 100871 China
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28
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Guzzo J. Biotechnical applications of small heat shock proteins from bacteria. Int J Biochem Cell Biol 2012; 44:1698-705. [PMID: 22706478 DOI: 10.1016/j.biocel.2012.06.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 06/04/2012] [Accepted: 06/07/2012] [Indexed: 01/05/2023]
Abstract
The stress responses of most bacteria are thought to involve the upregulation of small heat shock proteins. We describe here some of the most pertinent aspects of small heat shock proteins, to highlight their potential for use in various applications. Bacterial species have between one and 13 genes encoding small heat shock proteins, the precise number depending on the species considered. Major efforts have recently been made to characterize the protein protection and membrane stabilization mechanisms involving small heat shock proteins in bacteria. These proteins seem to be involved in the acquisition of cellular heat tolerance. They could therefore potentially be used to maintain cell viability under unfavorable conditions, such as heat shock or chemical treatments. This review highlights the potential roles of applications of small heat shock proteins in stabilizing overproduced heterologous proteins in Escherichia coli, purified bacterial small heat shock proteins in protein biochip technology, proteomic analysis and food technology and the potential impact of these proteins on some diseases. This article is part of a Directed Issue entitled: Small HSPs in physiology and pathology.
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Affiliation(s)
- Jean Guzzo
- UMR A PAM Université de Bourgogne/Agrosup Dijon Equipe Valmis Institut Jules Guyot, 1 Rue Claude Ladrey, BP27877, 21078 Dijon, France.
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