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Paulucci NS, Cesari AB, Biasutti MA, Dardanelli MS, Perillo MA. Membrane Homeoviscous Adaptation in Sinorhizobium Submitted to a Stressful Thermal Cycle Contributes to the Maintenance of the Symbiotic Plant–Bacteria Interaction. Front Microbiol 2021; 12:652477. [PMID: 34975776 PMCID: PMC8718912 DOI: 10.3389/fmicb.2021.652477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 11/15/2021] [Indexed: 12/02/2022] Open
Abstract
Here, we estimate fast changes in the fluidity of Sinorhizobium meliloti membranes submitted to cyclic temperature changes (10°C–40°C–10°C) by monitoring the fluorescence polarization (P) of DPH and TMA-DPH of the whole cell (WC) as well as in its outer (OM) and inner (IM) membranes. Additionally, the long-term response to thermal changes is demonstrated through the dynamics of the phospholipid and fatty acid composition in each membrane. This allowed membrane homeoviscous adaptation by the return to optimal fluidity levels as measured by the PDPH/TMA-DPH in WC, OM, IM, and multilamellar vesicles of lipids extracted from OM and IM. Due to probe-partitioning preferences and membranes’ compositional characteristics, DPH and TMA-DPH exhibit different behaviors in IM and OM. The rapid effect of cyclic temperature changes on the P was the opposite in both membranes with the IM being the one that exhibited the thermal behavior expected for lipid bilayers. Interestingly, only after the incubation at 40°C, cells were unable to recover the membrane preheating P levels when cooled up to 10°C. Solely in this condition, the formation of threads and nodular structures in Medicago sativa infected with S. meliloti were delayed, indicating that the symbiotic interaction was partially altered but not halted.
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Affiliation(s)
- Natalia Soledad Paulucci
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
- *Correspondence: Natalia Soledad Paulucci,
| | - Adriana Belén Cesari
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
| | - María Alicia Biasutti
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Química, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
| | - Marta Susana Dardanelli
- Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Cuarto, Argentina
- Marta Susana Dardanelli,
| | - María Angélica Perillo
- Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Ciencia y Tecnología de Alimentos (ICTA), Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
- María Angélica Perillo,
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Vasilopoulos G, Moser R, Petersen J, Aktas M, Narberhaus F. Promiscuous phospholipid biosynthesis enzymes in the plant pathogen Pseudomonas syringae. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:158926. [PMID: 33766680 DOI: 10.1016/j.bbalip.2021.158926] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 03/09/2021] [Accepted: 03/18/2021] [Indexed: 11/22/2022]
Abstract
Bacterial membranes are primarily composed of phosphatidylethanolamine (PE), phosphatidylglycerol (PG) and cardiolipin (CL). In the canonical PE biosynthesis pathway, phosphatidylserine (PS) is decarboxylated by the Psd enzyme. CL formation typically depends on CL synthases (Cls) using two PG molecules as substrates. Only few bacteria produce phosphatidylcholine (PC), the hallmark of eukaryotic membranes. Most of these bacteria use phospholipid N-methyltransferases to successively methylate PE to PC and/or a PC synthase (Pcs) to catalyze the condensation of choline and CDP-diacylglycerol (CDP-DAG) to PC. In this study, we show that membranes of Pseudomonas species able to interact with eukaryotes contain PE, PG, CL and PC. More specifically, we report on PC formation and a poorly characterized CL biosynthetic pathway in the plant pathogen P. syringae pv. tomato. It encodes a Pcs enzyme responsible for choline-dependent PC biosynthesis. CL formation is catalyzed by a promiscuous phospholipase D (PLD)-type enzyme (PSPTO_0095) that we characterized in vivo and in vitro. Like typical bacterial CL biosynthesis enzymes, it uses PE and PG for CL production. This enzyme is also able to convert PE and glycerol to PG, which is then combined with another PE molecule to synthesize CL. In addition, the enzyme is capable of converting ethanolamine or methylated derivatives into the corresponding phospholipids such as PE both in P. syringae and in E. coli. It can also hydrolyze CDP-DAG to yield phosphatidic acid (PA). Our study adds an example of a promiscuous Cls enzyme able to synthesize a suite of products according to the available substrates.
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Palusińska-Szysz M, Szuster-Ciesielska A, Janczarek M, Wdowiak-Wróbel S, Schiller J, Reszczyńska E, Gruszecki WI, Fuchs B. Genetic diversity of Legionella pcs and pmtA genes and the effect of utilization of choline by Legionella spp. on induction of proinflammatory cytokines. Pathog Dis 2020; 77:5645234. [PMID: 31778176 DOI: 10.1093/femspd/ftz065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/27/2019] [Indexed: 12/24/2022] Open
Abstract
Legionella species synthesize phosphatidylcholine (PC) in two independent pathways: the three-step methylation of phosphatidylethanolamine PMT pathway and the one-step PCS pathway, in which the Pcs enzyme catalyzes the reaction between choline and CDP-diacylglycerol to form PC. Legionella pcs genes encode highly hydrophobic proteins with phosphatidylcholine synthase activity, which contain up to eight transmembrane helices with N- and C-termini located inside the bacterial cell. The comparative analysis of nucleotide sequences of pcs showed that these genes share high sequence identity among members of the Legionellaceae family. Legionella pmtA genes involved in the PMT pathway encoded small cytosolic proteins with putative phosphatidylethanolamine N-methyltransferase activity. The pmtA genes identified in Legionella species had lower sequence identity to each other than the pcs genes. The phylogenetic tree constructed based on the pcs and pmtA gene sequences showed phylogenetic relatedness between Legionella spp. and other bacteria. The utilization of extracellular choline by the four Legionella species leads to changes not only in the lipid components but also in proteins, and the interactions between these components lead to changes in cell surface properties, which result in a decline in induction of proinflammatory cytokines (TNF-α and IL-6).
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Affiliation(s)
- Marta Palusińska-Szysz
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19 St., 20-033 Lublin, Poland
| | - Agnieszka Szuster-Ciesielska
- Department of Virology and Immunology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19 St., 20-033 Lublin, Poland
| | - Monika Janczarek
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19 St., 20-033 Lublin, Poland
| | - Sylwia Wdowiak-Wróbel
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19 St., 20-033 Lublin, Poland
| | - Jürgen Schiller
- Institute of Medical Physics and Biophysics, Medical Faculty, University of Leipzig, Hartelstr. 16/18, D-04107, Leipzig, Germany
| | - Emilia Reszczyńska
- Leibniz-Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Dummerstorf, Germany
| | - Wiesław I Gruszecki
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19 St., 20-033 Lublin, Lublin, Poland
| | - Beate Fuchs
- Department of Biophysics, Faculty of Mathematics, Physics and Computer Science, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square 1, 20-031 Lublin, Lublin, Poland
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Fernandes BS, Vieira JPF, Contesini FJ, Mantelatto PE, Zaiat M, Pradella JGDC. High value added lipids produced by microorganisms: a potential use of sugarcane vinasse. Crit Rev Biotechnol 2017; 37:1048-1061. [DOI: 10.1080/07388551.2017.1304356] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Bruna Soares Fernandes
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Centre of Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - João Paulo Fernandes Vieira
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Centre of Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Fabiano Jares Contesini
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Centre of Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Paulo Eduardo Mantelatto
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Centre of Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Marcelo Zaiat
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Centre of Research in Energy and Materials (CNPEM), Campinas, Brazil
- Biological Processes Laboratory, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), São Carlos, Brazil
| | - José Geraldo da Cruz Pradella
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Centre of Research in Energy and Materials (CNPEM), Campinas, Brazil
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Liu X, Han M, Xu J, Geng S, Zhang Y, Ye X, Gou J, Yin T, He H, Tang X. Asialoglycoprotein receptor-targeted liposomes loaded with a norcantharimide derivative for hepatocyte-selective targeting. Int J Pharm 2017; 520:98-110. [DOI: 10.1016/j.ijpharm.2017.02.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 12/13/2022]
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Vences-Guzmán MÁ, Paula Goetting-Minesky M, Guan Z, Castillo-Ramirez S, Córdoba-Castro LA, López-Lara IM, Geiger O, Sohlenkamp C, Christopher Fenno J. 1,2-Diacylglycerol choline phosphotransferase catalyzes the final step in the unique Treponema denticola phosphatidylcholine biosynthesis pathway. Mol Microbiol 2017; 103:896-912. [PMID: 28009086 DOI: 10.1111/mmi.13596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2016] [Indexed: 01/09/2023]
Abstract
Treponema denticola synthesizes phosphatidylcholine through a licCA-dependent CDP-choline pathway identified only in the genus Treponema. However, the mechanism of conversion of CDP-choline to phosphatidylcholine remained unclear. We report here characterization of TDE0021 (herein designated cpt) encoding a 1,2-diacylglycerol choline phosphotransferase homologous to choline phosphotransferases that catalyze the final step of the highly conserved Kennedy pathway for phosphatidylcholine synthesis in eukaryotes. T. denticola Cpt catalyzed in vitro phosphatidylcholine formation from CDP-choline and diacylglycerol, and full activity required divalent manganese. Allelic replacement mutagenesis of cpt in T. denticola resulted in abrogation of phosphatidylcholine synthesis. T. denticola Cpt complemented a Saccharomyces cerevisiae CPT1 mutant, and expression of the entire T. denticola LicCA-Cpt pathway in E. coli resulted in phosphatidylcholine biosynthesis. Our findings show that T. denticola possesses a unique phosphatidylcholine synthesis pathway combining conserved prokaryotic choline kinase and CTP:phosphocholine cytidylyltransferase activities with a 1,2-diacylglycerol choline phosphotransferase that is common in eukaryotes. Other than in a subset of mammalian host-associated Treponema that includes T. pallidum, this pathway is found in neither bacteria nor Archaea. Molecular dating analysis of the Cpt gene family suggests that a horizontal gene transfer event introduced this gene into an ancestral Treponema well after its divergence from other spirochetes.
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Affiliation(s)
- Miguel Ángel Vences-Guzmán
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico
| | - M Paula Goetting-Minesky
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, Michigan, 48109, USA
| | - Ziqiang Guan
- Department of Biochemistry, Duke University Medical Center, Durham, North Carolina, 27710, USA
| | - Santiago Castillo-Ramirez
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico
| | - Luz América Córdoba-Castro
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico
| | - Isabel M López-Lara
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico
| | - Otto Geiger
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico
| | - Christian Sohlenkamp
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico
| | - J Christopher Fenno
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, Michigan, 48109, USA
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Di DD, Jiang H, Tian LL, Kang JL, Zhang W, Yi XP, Ye F, Zhong Q, Ni B, He YY, Xia L, Yu Y, Cui BY, Mao X, Fan WX. Comparative genomic analysis between newly sequenced Brucella suis Vaccine Strain S2 and the Virulent Brucella suis Strain 1330. BMC Genomics 2016; 17:741. [PMID: 27645563 PMCID: PMC5029015 DOI: 10.1186/s12864-016-3076-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 09/07/2016] [Indexed: 11/16/2022] Open
Abstract
Background Brucellosis is a bacterial disease caused by Brucella infection. In the late fifties, Brucella suis vaccine strain S2 with reduced virulence was obtained by serial transfer of a virulent B. suis biovar 1 strain in China. It has been widely used for vaccination in China since 1971. Until now, the mechanisms underlie virulence attenuation of S2 are still unknown. Results In this paper, the whole genome sequencing of S2 was carried out by Illumina Hiseq2000 sequencing method. We further performed the comparative genomic analysis to find out the differences between S2 and the virulent Brucella suis strain 1330. We found premature stops in outer membrane autotransporter omaA and eryD genes. Single mutations were found in phosphatidylcholine synthase, phosphorglucosamine mutase, pyruvate kinase and FliF, which have been reported to be related to the virulence of Brucella or other bacteria. Of the other different proteins between S2 and 1330, such as Omp2b, periplasmic sugar-binding protein, and oligopeptide ABC transporter, no definitive implications related to bacterial virulence were found, which await further investigation. Conclusions The data presented here provided the rational basis for designing Brucella vaccines that could be used in other strains. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3076-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dong-Dong Di
- Laboratory of Zoonoses, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Hai Jiang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Li-Li Tian
- Laboratory of Zoonoses, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Jing-Li Kang
- Laboratory of Zoonoses, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Wen Zhang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Xin-Ping Yi
- Xinjiang Academy of Animal Science, Institute of Veterinary Research, Urumuqi, Xinjiang, China
| | - Feng Ye
- Xinjiang Academy of Animal Science, Institute of Veterinary Research, Urumuqi, Xinjiang, China
| | - Qi Zhong
- Xinjiang Academy of Animal Science, Institute of Veterinary Research, Urumuqi, Xinjiang, China
| | - Bo Ni
- Laboratory of Zoonoses, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - You-Yu He
- ZhongXin Biotechology Shanghai Co, Ltd. 12F, Building 1, 100 Qinzhou Road, Shanghai, China
| | - Lin Xia
- ZhongXin Biotechology Shanghai Co, Ltd. 12F, Building 1, 100 Qinzhou Road, Shanghai, China
| | - Yao Yu
- ZhongXin Biotechology Shanghai Co, Ltd. 12F, Building 1, 100 Qinzhou Road, Shanghai, China
| | - Bu-Yun Cui
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Beijing, China.
| | - Xiang Mao
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China.
| | - Wei-Xing Fan
- Laboratory of Zoonoses, China Animal Health and Epidemiology Center, Qingdao, Shandong, China.
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8
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Sohlenkamp C, Geiger O. Bacterial membrane lipids: diversity in structures and pathways. FEMS Microbiol Rev 2015; 40:133-59. [DOI: 10.1093/femsre/fuv008] [Citation(s) in RCA: 571] [Impact Index Per Article: 63.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2015] [Indexed: 12/22/2022] Open
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9
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Albareda M, Rodrigue A, Brito B, Ruiz-Argüeso T, Imperial J, Mandrand-Berthelot MA, Palacios J. Rhizobium leguminosarum HupE is a highly-specific diffusion facilitator for nickel uptake. Metallomics 2015; 7:691-701. [DOI: 10.1039/c4mt00298a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Functional and topological analysis ofRhizobium leguminosarumHupE, the founding member of the HupE/UreJ family of nickel permeases, provides new hints on how bacteria manage nickel provision for metalloenzyme synthesis.
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Affiliation(s)
- Marta Albareda
- Departamento de Biotecnología
- Escuela Técnica Superior de Ingenieros Agrónomos and Centro de Biotecnología y Genómica de Plantas (C.B.G.P.)
- Universidad Politécnica de Madrid
- Campus de Montegancedo
- 28223 Pozuelo de Alarcón, Spain
| | - Agnès Rodrigue
- Microbiologie
- Adaptation et Pathogénie
- F-69622 Villeurbanne Cedex, France
| | - Belén Brito
- Departamento de Biotecnología
- Escuela Técnica Superior de Ingenieros Agrónomos and Centro de Biotecnología y Genómica de Plantas (C.B.G.P.)
- Universidad Politécnica de Madrid
- Campus de Montegancedo
- 28223 Pozuelo de Alarcón, Spain
| | - Tomás Ruiz-Argüeso
- Departamento de Biotecnología
- Escuela Técnica Superior de Ingenieros Agrónomos and Centro de Biotecnología y Genómica de Plantas (C.B.G.P.)
- Universidad Politécnica de Madrid
- Campus de Montegancedo
- 28223 Pozuelo de Alarcón, Spain
| | - Juan Imperial
- Departamento de Biotecnología
- Escuela Técnica Superior de Ingenieros Agrónomos and Centro de Biotecnología y Genómica de Plantas (C.B.G.P.)
- Universidad Politécnica de Madrid
- Campus de Montegancedo
- 28223 Pozuelo de Alarcón, Spain
| | | | - Jose Palacios
- Departamento de Biotecnología
- Escuela Técnica Superior de Ingenieros Agrónomos and Centro de Biotecnología y Genómica de Plantas (C.B.G.P.)
- Universidad Politécnica de Madrid
- Campus de Montegancedo
- 28223 Pozuelo de Alarcón, Spain
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10
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Aktas M, Köster S, Kizilirmak S, Casanova JC, Betz H, Fritz C, Moser R, Yildiz Ö, Narberhaus F. Enzymatic properties and substrate specificity of a bacterial phosphatidylcholine synthase. FEBS J 2014; 281:3523-41. [DOI: 10.1111/febs.12877] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 06/11/2014] [Accepted: 06/11/2014] [Indexed: 11/26/2022]
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11
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Nogly P, Gushchin I, Remeeva A, Esteves AM, Borges N, Ma P, Ishchenko A, Grudinin S, Round E, Moraes I, Borshchevskiy V, Santos H, Gordeliy V, Archer M. X-ray structure of a CDP-alcohol phosphatidyltransferase membrane enzyme and insights into its catalytic mechanism. Nat Commun 2014; 5:4169. [PMID: 24942835 DOI: 10.1038/ncomms5169] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 05/19/2014] [Indexed: 11/08/2022] Open
Abstract
Phospholipids have major roles in the structure and function of all cell membranes. Most integral membrane proteins from the large CDP-alcohol phosphatidyltransferase family are involved in phospholipid biosynthesis across the three domains of life. They share a conserved sequence pattern and catalyse the displacement of CMP from a CDP-alcohol by a second alcohol. Here we report the crystal structure of a bifunctional enzyme comprising a cytoplasmic nucleotidyltransferase domain (IPCT) fused with a membrane CDP-alcohol phosphotransferase domain (DIPPS) at 2.65 Å resolution. The bifunctional protein dimerizes through the DIPPS domains, each comprising six transmembrane α-helices. The active site cavity is hydrophilic and widely open to the cytoplasm with a magnesium ion surrounded by four highly conserved aspartate residues from helices TM2 and TM3. We show that magnesium is essential for the enzymatic activity and is involved in catalysis. Substrates docking is validated by mutagenesis studies, and a structure-based catalytic mechanism is proposed.
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12
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Sciara G, Clarke OB, Tomasek D, Kloss B, Tabuso S, Byfield R, Cohn R, Banerjee S, Rajashankar KR, Slavkovic V, Graziano JH, Shapiro L, Mancia F. Structural basis for catalysis in a CDP-alcohol phosphotransferase. Nat Commun 2014; 5:4068. [PMID: 24923293 PMCID: PMC4098843 DOI: 10.1038/ncomms5068] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 05/08/2014] [Indexed: 12/21/2022] Open
Abstract
The CDP-alcohol phosphotransferase (CDP-AP) family of integral membrane enzymes catalyses the transfer of a substituted phosphate group from a CDP-linked donor to an alcohol acceptor. This is an essential reaction for phospholipid biosynthesis across all kingdoms of life, and it is catalysed solely by CDP-APs. Here we report the 2.0 Å resolution crystal structure of a representative CDP-AP from Archaeoglobus fulgidus. The enzyme (AF2299) is a homodimer, with each protomer consisting of six transmembrane helices and an N-terminal cytosolic domain. A polar cavity within the membrane accommodates the active site, lined with the residues from an absolutely conserved CDP-AP signature motif (D(1)xxD(2)G(1)xxAR...G(2)xxxD(3)xxxD(4)). Structures in the apo, CMP-bound, CDP-bound and CDP-glycerol-bound states define functional roles for each of these eight conserved residues and allow us to propose a sequential, base-catalysed mechanism universal for CDP-APs, in which the fourth aspartate (D4) acts as the catalytic base.
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Affiliation(s)
- Giuliano Sciara
- 1] Department of Physiology and Cellular Biophysics, Columbia University, New York, New York 10032, USA [2]
| | - Oliver B Clarke
- 1] Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA [2]
| | - David Tomasek
- 1] Department of Physiology and Cellular Biophysics, Columbia University, New York, New York 10032, USA [2]
| | - Brian Kloss
- New York Consortium on Membrane Protein Structure, New York Structural Biology Center, 89 Convent Avenue, New York, New York 10027, USA
| | - Shantelle Tabuso
- New York Consortium on Membrane Protein Structure, New York Structural Biology Center, 89 Convent Avenue, New York, New York 10027, USA
| | - Rushelle Byfield
- Department of Physiology and Cellular Biophysics, Columbia University, New York, New York 10032, USA
| | - Raphael Cohn
- Department of Physiology and Cellular Biophysics, Columbia University, New York, New York 10032, USA
| | - Surajit Banerjee
- Department of Chemistry and Chemical Biology, Cornell University, NE-CAT, Advanced Photon Source, Argonne, Illinois 60439, USA
| | - Kanagalaghatta R Rajashankar
- Department of Chemistry and Chemical Biology, Cornell University, NE-CAT, Advanced Photon Source, Argonne, Illinois 60439, USA
| | - Vesna Slavkovic
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032, USA
| | - Joseph H Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032, USA
| | - Lawrence Shapiro
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA
| | - Filippo Mancia
- Department of Physiology and Cellular Biophysics, Columbia University, New York, New York 10032, USA
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Aktas M, Danne L, Möller P, Narberhaus F. Membrane lipids in Agrobacterium tumefaciens: biosynthetic pathways and importance for pathogenesis. Front Plant Sci 2014; 5:109. [PMID: 24723930 PMCID: PMC3972451 DOI: 10.3389/fpls.2014.00109] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 03/07/2014] [Indexed: 05/25/2023]
Abstract
Many cellular processes critically depend on the membrane composition. In this review, we focus on the biosynthesis and physiological roles of membrane lipids in the plant pathogen Agrobacterium tumefaciens. The major components of A. tumefaciens membranes are the phospholipids (PLs), phosphatidylethanolamine (PE), phosphatidylglycerol, phosphatidylcholine (PC) and cardiolipin, and ornithine lipids (OLs). Under phosphate-limited conditions, the membrane composition shifts to phosphate-free lipids like glycolipids, OLs and a betaine lipid. Remarkably, PC and OLs have opposing effects on virulence of A. tumefaciens. OL-lacking A. tumefaciens mutants form tumors on the host plant earlier than the wild type suggesting a reduced host defense response in the absence of OLs. In contrast, A. tumefaciens is compromised in tumor formation in the absence of PC. In general, PC is a rare component of bacterial membranes but amount to ~22% of all PLs in A. tumefaciens. PC biosynthesis occurs via two pathways. The phospholipid N-methyltransferase PmtA methylates PE via the intermediates monomethyl-PE and dimethyl-PE to PC. In the second pathway, the membrane-integral enzyme PC synthase (Pcs) condenses choline with CDP-diacylglycerol to PC. Apart from the virulence defect, PC-deficient A. tumefaciens pmtA and pcs double mutants show reduced motility, enhanced biofilm formation and increased sensitivity towards detergent and thermal stress. In summary, there is cumulative evidence that the membrane lipid composition of A. tumefaciens is critical for agrobacterial physiology and tumor formation.
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Affiliation(s)
| | | | | | - Franz Narberhaus
- *Correspondence: Franz Narberhaus, Microbial Biology, Department for Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse 150, NDEF 06/783, 44780 Bochum, Germany e-mail:
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Geiger O, López-Lara IM, Sohlenkamp C. Phosphatidylcholine biosynthesis and function in bacteria. Biochim Biophys Acta Mol Cell Biol Lipids 2012; 1831:503-13. [PMID: 22922101 DOI: 10.1016/j.bbalip.2012.08.009] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 08/10/2012] [Accepted: 08/13/2012] [Indexed: 02/03/2023]
Abstract
Phosphatidylcholine (PC) is the major membrane-forming phospholipid in eukaryotes and is estimated to be present in about 15% of the domain Bacteria. Usually, PC can be synthesized in bacteria by either of two pathways, the phospholipid N-methylation (Pmt) pathway or the phosphatidylcholine synthase (Pcs) pathway. The three subsequent enzymatic methylations of phosphatidylethanolamine are performed by a single phospholipid N-methyltransferase in some bacteria whereas other bacteria possess multiple phospholipid N-methyltransferases each one performing one or several distinct methylation steps. Phosphatidylcholine synthase condenses choline directly with CDP-diacylglycerol to form CMP and PC. Like in eukaryotes, bacterial PC also functions as a biosynthetic intermediate during the formation of other biomolecules such as choline, diacylglycerol, or diacylglycerol-based phosphorus-free membrane lipids. Bacterial PC may serve as a specific recognition molecule but it affects the physicochemical properties of bacterial membranes as well. This article is part of a Special Issue entitled Phospholipids and Phospholipid Metabolism.
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Affiliation(s)
- Otto Geiger
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Apdo. Postal 565-A, Cuernavaca, Morelos, CP62210, Mexico.
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