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Tendiuk N, Diakonova A, Petrova O, Mukhametzyanov T, Makshakova O, Gorshkov V. Svx Peptidases of Phytopathogenic Pectolytic Bacteria: Structural, Catalytic and Phytoimmune Properties. Int J Mol Sci 2024; 25:756. [PMID: 38255830 PMCID: PMC10815107 DOI: 10.3390/ijms25020756] [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: 12/05/2023] [Revised: 12/31/2023] [Accepted: 01/02/2024] [Indexed: 01/24/2024] Open
Abstract
Svx proteins are virulence factors secreted by phytopathogenic bacteria of the Pectobacterium genus into the host plant cell wall. Svx-encoding genes are present in almost all species of the soft rot Pectobacteriaceae (Pectobacterium and Dickeya genera). The Svx of P. atrosepticum (Pba) has been shown to be a gluzincin metallopeptidase that presumably targets plant extensins, proteins that contribute to plant cell wall rigidity and participate in cell signaling. However, the particular "output" of the Pba Svx action in terms of plant-pathogen interactions and plant immune responses remained unknown. The Svx proteins are largely unexplored in Dickeya species, even though some of them have genes encoding two Svx homologs. Therefore, our study aims to compare the structural and catalytic properties of the Svx proteins of Pba and D. solani (Dso) and to test the phytoimmune properties of these proteins. Two assayed Dso Svx proteins, similar to Pba Svx, were gluzincin metallopeptidases with conservative tertiary structures. The two domains of the Svx proteins form electronegative clefts where the active centers of the peptidase domains are located. All three assayed Svx proteins possessed phytoimmunosuppressory properties and induced ethylene-mediated plant susceptible responses that play a decisive role in Pba-caused disease.
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Affiliation(s)
- Natalia Tendiuk
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111 Kazan, Russia; (N.T.); (A.D.); (O.P.); (O.M.)
| | - Anastasiya Diakonova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111 Kazan, Russia; (N.T.); (A.D.); (O.P.); (O.M.)
| | - Olga Petrova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111 Kazan, Russia; (N.T.); (A.D.); (O.P.); (O.M.)
| | - Timur Mukhametzyanov
- Department of Physical Chemistry, Kazan Federal University, 420008 Kazan, Russia;
| | - Olga Makshakova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111 Kazan, Russia; (N.T.); (A.D.); (O.P.); (O.M.)
| | - Vladimir Gorshkov
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111 Kazan, Russia; (N.T.); (A.D.); (O.P.); (O.M.)
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
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Figaj D, Ambroziak P, Przepiora T, Skorko-Glonek J. The Role of Proteases in the Virulence of Plant Pathogenic Bacteria. Int J Mol Sci 2019; 20:ijms20030672. [PMID: 30720762 PMCID: PMC6386880 DOI: 10.3390/ijms20030672] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/30/2019] [Accepted: 02/02/2019] [Indexed: 12/17/2022] Open
Abstract
A pathogenic lifestyle is inextricably linked with the constant necessity of facing various challenges exerted by the external environment (both within and outside the host). To successfully colonize the host and establish infection, pathogens have evolved sophisticated systems to combat the host defense mechanisms and also to be able to withstand adverse environmental conditions. Proteases, as crucial components of these systems, are involved in a variety of processes associated with infection. In phytopathogenic bacteria, they play important regulatory roles and modulate the expression and functioning of various virulence factors. Secretory proteases directly help avoid recognition by the plant immune systems, and contribute to the deactivation of the defense response pathways. Finally, proteases are important components of protein quality control systems, and thus enable maintaining homeostasis in stressed bacterial cells. In this review, we discuss the known protease functions and protease-regulated signaling processes associated with virulence of plant pathogenic bacteria.
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Affiliation(s)
- Donata Figaj
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland.
| | - Patrycja Ambroziak
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland.
| | - Tomasz Przepiora
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland.
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Garcia CJ, Pericleous A, Elsayed M, Tran M, Gupta S, Callaghan JD, Stella NA, Franks JM, Thibodeau PH, Shanks RMQ, Kadouri DE. Serralysin family metalloproteases protects Serratia marcescens from predation by the predatory bacteria Micavibrio aeruginosavorus. Sci Rep 2018; 8:14025. [PMID: 30232396 PMCID: PMC6145908 DOI: 10.1038/s41598-018-32330-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 09/03/2018] [Indexed: 12/16/2022] Open
Abstract
Micavibrio aeruginosavorus is an obligate Gram-negative predatory bacterial species that feeds on other Gram-negative bacteria by attaching to the surface of its prey and feeding on the prey's cellular contents. In this study, Serratia marcescens with defined mutations in genes for extracellular cell structural components and secreted factors were used in predation experiments to identify structures that influence predation. No change was measured in the ability of the predator to prey on S. marcescens flagella, fimbria, surface layer, prodigiosin and phospholipase-A mutants. However, higher predation was measured on S. marcescens metalloprotease mutants. Complementation of the metalloprotease gene, prtS, into the protease mutant, as well as exogenous addition of purified serralysin metalloprotease, restored predation to wild type levels. Addition of purified serralysin also reduced the ability of M. aeruginosavorus to prey on Escherichia coli. Incubating M. aeruginosavorus with purified metalloprotease was found to not impact predator viability; however, pre-incubating prey, but not the predator, with purified metalloprotease was able to block predation. Finally, using flow cytometry and fluorescent microscopy, we were able to confirm that the ability of the predator to bind to the metalloprotease mutant was higher than that of the metalloprotease producing wild-type. The work presented in this study shows that metalloproteases from S. marcescens could offer elevated protection from predation.
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Affiliation(s)
- Carlos J Garcia
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA
| | - Androulla Pericleous
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA
| | - Mennat Elsayed
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA
| | - Michael Tran
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA
| | - Shilpi Gupta
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA
| | - Jake D Callaghan
- Department of Ophthalmology, Charles T. Campbell Laboratory of Ophthalmic Microbiology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Nicholas A Stella
- Department of Ophthalmology, Charles T. Campbell Laboratory of Ophthalmic Microbiology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Jonathan M Franks
- Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Patrick H Thibodeau
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA, 15221, USA
| | - Robert M Q Shanks
- Department of Ophthalmology, Charles T. Campbell Laboratory of Ophthalmic Microbiology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Daniel E Kadouri
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA.
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Huang YT, Cheng JF, Liu YT, Mao YC, Wu MS, Liu PY. Genome-based analysis of virulence determinants of a Serratia marcescens strain from soft tissues following a snake bite. Future Microbiol 2017; 13:331-343. [PMID: 29105506 DOI: 10.2217/fmb-2017-0202] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM Serratia marcescens wound infection after snakebite is often associated with aggressive presentations. However, the virulence determinants remain understudied. MATERIALS & METHODS Whole-genome sequencing was performed on S. marcescens VGH107, an isolate from wound infection secondary to Trimeresurus mucrosquamatus bite. Comparative genomics approach coupled with multivirulent-locus sequencing typing was applied to systematically predict potential virulence factors. RESULTS Multivirulent-locus sequencing typing indicated VGH107 falls within the cluster of high pathogenic strains. Comparative analysis identified virulence genes unique in VGH107, including ecpD and ecpE genes for periplasmic chaperone-pilus subunit complex and cdiA and cdiB genes for contact-dependent growth inhibition system. CONCLUSION The data established here provide foundation for further research regarding the virulence and resistance of S. marcescens.
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Affiliation(s)
- Yao-Ting Huang
- Department of Computer Science & Information Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Jan-Fang Cheng
- Department of Energy, Joint Genome Institute, Walnut Creek, CA 94598, USA
| | - Yi-Ting Liu
- Department of Computer Science & Information Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Yan-Chiao Mao
- Department of Emergency Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Meng-San Wu
- Division of Infection & Immunity, University College London, London, UK
| | - Po-Yu Liu
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.,Rong Hsing Research Center for Translational Medicine, College of Life Sciences, National Chung Hsing University, Taichung, Taiwan
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Stella NA, Callaghan JD, Zhang L, Brothers KM, Kowalski RP, Huang JJ, Thibodeau PH, Shanks RMQ. SlpE is a calcium-dependent cytotoxic metalloprotease associated with clinical isolates of Serratia marcescens. Res Microbiol 2017; 168:567-574. [PMID: 28366837 PMCID: PMC5503780 DOI: 10.1016/j.resmic.2017.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 03/08/2017] [Accepted: 03/22/2017] [Indexed: 01/15/2023]
Abstract
Serralysin-like proteases are found in a wide variety of bacteria. These metalloproteases are frequently implicated in virulence and are members of the widely conserved RTX-toxin family. We identified a serralysin-like protease in the genome of a clinical isolate of Serratia marcescens that is highly similar to the canonical serralysin protein, PrtS. This gene was named serralysin-like protease E, SlpE, and was found in the majority (67%) of tested clinical isolates, but was absent from most tested non-clinical isolates including the insect pathogen and reference S. marcescens strain Db11. Purified recombinant SlpE exhibited calcium-dependent protease activity similar to metalloproteases PrtS and SlpB. Induction of slpE in the low-protease-producing S. marcescens strain PIC3611 highly elevated extracellular protease activity, and extracellular secretion required the lipD type 1 secretion system gene. Transcription of slpE was highly reduced in an eepR transcription factor mutant. Mutation of the slpE gene in a highly proteolytic clinical isolate reduced its protease activity, and evidence suggests that SlpE confers cytotoxicity of S. marcescens to the A549 airway carcinoma cell line. Together, these data reveal SlpE to be an EepR-regulated cytotoxic metalloprotease associated with clinical isolates of an important opportunistic pathogen.
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Affiliation(s)
- Nicholas A Stella
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jake D Callaghan
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Liang Zhang
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Kimberly M Brothers
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Regis P Kowalski
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jean J Huang
- Department of Biology, Olin College, Needham, MA 02492, USA
| | - Patrick H Thibodeau
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Robert M Q Shanks
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA; Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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Zhou J, Zhang H, Lv M, Chen Y, Liao L, Cheng Y, Liu S, Chen S, He F, Cui Z, Jiang Z, Chang C, Zhang L. SlyA regulates phytotoxin production and virulence in Dickeya zeae EC1. MOLECULAR PLANT PATHOLOGY 2016; 17:1398-1408. [PMID: 26814706 PMCID: PMC6638372 DOI: 10.1111/mpp.12376] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 01/23/2016] [Accepted: 01/24/2016] [Indexed: 06/05/2023]
Abstract
Dickeya zeae is a causal agent of rice root rot disease. The pathogen is known to produce a range of virulence factors, including phytotoxic zeamines and extracellular enzymes, but the mechanisms of virulence regulation remain vague. In this study, we identified a SlyA/MarR family transcription factor SlyA in D. zeae strain EC1. Disruption of slyA significantly decreased zeamine production, enhanced swimming and swarming motility, reduced biofilm formation and significantly decreased pathogenicity on rice. Quantitative polymerase chain reaction (qPCR) analysis confirmed the role of SlyA in transcriptional modulation of a range of genes associated with bacterial virulence. In trans expression of slyA in expI mutants recovered the phenotypes of motility and biofilm formation, suggesting that SlyA is downstream of the acylhomoserine lactone-mediated quorum sensing pathway. Taken together, the findings from this study unveil a key transcriptional regulatory factor involved in the modulation of virulence factor production and overall pathogenicity of D. zeae EC1.
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Affiliation(s)
- Jia‐Nuan Zhou
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Hai‐Bao Zhang
- Institute of Molecular and Cell Biology 61 Biopolis DriveSingapore138673
| | - Ming‐Fa Lv
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Yu‐Fan Chen
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Li‐Sheng Liao
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Ying‐Ying Cheng
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Shi‐Yin Liu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Shao‐Hua Chen
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Fei He
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Zi‐Ning Cui
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Zi‐De Jiang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Chang‐Qing Chang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
| | - Lian‐Hui Zhang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant PathologySouth China Agricultural UniversityGuangzhou510642China
- Institute of Molecular and Cell Biology 61 Biopolis DriveSingapore138673
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Delepelaire P, Izadi-Pruneyre N, Delepierre M, Ghigo JM, Schwartz M. A tribute to Cécile Wandersman. Res Microbiol 2015; 166:393-8. [PMID: 26258186 DOI: 10.1016/j.resmic.2015.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Song JK, Kim HS, Ahn HJ, Song BK, Rhee JS. Heterologous ABC exporter-based cloning of gram-negative bacterial type I secretion pathway-dependent metalloproteases from an Erwinia genomic DNA library in Escherichia coli. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2006.02.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Omori K, Idei A. Gram-negative bacterial ATP-binding cassette protein exporter family and diverse secretory proteins. J Biosci Bioeng 2005; 95:1-12. [PMID: 16233359 DOI: 10.1016/s1389-1723(03)80141-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2002] [Accepted: 08/05/2002] [Indexed: 10/27/2022]
Abstract
Protein translocation to the extracellular space is essential for the invasion, colonization, and survival of pathogenic gram-negative bacteria within a host organism. In addition to the N-terminal signal sequence-dependent secretion system, which is specific for protein transport to the periplasmic space, there are five major systems (type I, II, III, IV, and V) that are known to be involved in protein secretion into the extracellular space. Of the systems, the type I pathway, which is composed of three membrane components including an ATP-binding cassette (ABC) protein, translocates proteins into the extracellular space from the cytosol by directly using the energy generated from ATP hydrolysis, and therefore, the system is a member of the ABC transporter family and is also known as the ABC exporter. To date, ABC exporters have been discovered to be involved in the secretion of a wide variety of exoproteins including RTX (repeats-in-toxin) toxins, cell surface layer proteins, proteases, lipases, bacteriocins, heme-acquisition proteins, and nodulation-related proteins such as the exoglucanases of gram-negative bacteria. A secretory protein and its associated specific ABC exporter are encoded in the same gene cluster in most cases, and ABC exporters show substrate specificity for secretion. Consequently, ABC exporters are present based primarily on the number of secretory protein genes. A secretion signal is situated in the C-terminal region of secretory proteins, however, the characteristics of the secretion signal are not fully understood. Secretory substrates and their linked ABC exporters are reviewed in the following paper.
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Affiliation(s)
- Kenji Omori
- Discovery Research Laboratory, Tanabe Seiyaku Co., Ltd., Kawagishi-2-chome, Toda, Saitama 335-8505, Japan.
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Valueva TA, Mosolov VV. Role of inhibitors of proteolytic enzymes in plant defense against phytopathogenic microorganisms. BIOCHEMISTRY (MOSCOW) 2005; 69:1305-9. [PMID: 15627384 DOI: 10.1007/s10541-005-0015-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This review analyzes the literature on various mechanisms of proteolytic enzyme inhibitors involved in plant defense against attack by phytopathogenic microorganisms. The action of proteinase inhibitors from plants upon the enzymes from pathogenic microorganisms and viruses is reviewed. Considerable attention is given to the induction of proteinase inhibitors in plants in response to the invasion of pathogens. Some aspects of application of proteinase inhibitors in biotechnology for production of transgenic plants with enhanced resistance to diseases are discussed.
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Affiliation(s)
- T A Valueva
- Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow 119071, Russia.
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Bowen DJ, Rocheleau TA, Grutzmacher CK, Meslet L, Valens M, Marble D, Dowling A, Ffrench-Constant R, Blight MA. Genetic and biochemical characterization of PrtA, an RTX-like metalloprotease from Photorhabdus. MICROBIOLOGY (READING, ENGLAND) 2003; 149:1581-1591. [PMID: 12777498 DOI: 10.1099/mic.0.26171-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Proteases play a key role in the interaction between pathogens and their hosts. The bacterial entomopathogen Photorhabdus lives in symbiosis with nematodes that invade insects. Following entry into the insect, the bacteria are released from the nematode gut into the open blood system of the insect. Here they secrete factors which kill the host and also convert the host tissues into food for the replicating bacteria and nematodes. One of the secreted proteins is PrtA, which is shown here to be a repeats-in-toxin (RTX) alkaline zinc metalloprotease. PrtA has high affinity for artificial substrates such as casein and gelatin and can be inhibited by zinc metalloprotease inhibitors. The metalloprotease also shows a calcium- and temperature-dependent autolysis. The prtA gene carries the characteristic RTX repeated motifs and predicts high similarity to proteases from Erwinia chrysanthemi, Pseudomonas aeruginosa and Serratia marcescens. The prtA gene resides in a locus encoding both the protease ABC transporter (prtBCD) and an intervening ORF encoding a protease inhibitor (inh). PrtA activity is detectable 24 h after artificial bacterial infection of an insect, suggesting that the protease may play a key role in degrading insect tissues rather than in overcoming the insect immune system. Purified PrtA also shows cytotoxicity to mammalian cell cultures, supporting its proposed role in bioconversion of the insect cadaver into food for bacterial and nematode development.
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Affiliation(s)
- David J Bowen
- Department of Entomology, University of Wisconsin-Madison, Madison, USA
| | | | | | - Laurence Meslet
- Institut de Génétique et Microbiologie, CNRS UMR 8621, Bâtiment 360, Université Paris XI, 91405 Orsay Cedex, France
| | - Michelle Valens
- Institut de Génétique et Microbiologie, CNRS UMR 8621, Bâtiment 360, Université Paris XI, 91405 Orsay Cedex, France
| | - Daniel Marble
- Department of Entomology, University of Wisconsin-Madison, Madison, USA
| | - Andrea Dowling
- Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UK
| | | | - Mark A Blight
- Institut de Génétique et Microbiologie, CNRS UMR 8621, Bâtiment 360, Université Paris XI, 91405 Orsay Cedex, France
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OMORI KENJI, IDEI AKIKO. Gram-Negative Bacterial ATP-Binding Cassette Protein Exporter Family and Diverse Secretory Proteins. J Biosci Bioeng 2003. [DOI: 10.1263/jbb.95.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Fernández L, Secades P, Lopez JR, Márquez I, Guijarro JA. Isolation and analysis of a protease gene with an ABC transport system in the fish pathogen Yersinia ruckeri: insertional mutagenesis and involvement in virulence. MICROBIOLOGY (READING, ENGLAND) 2002; 148:2233-2243. [PMID: 12101310 DOI: 10.1099/00221287-148-7-2233] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Yersinia ruckeri is a Gram-negative pathogen that causes enteric redmouth disease in salmonids. A gene from Y. ruckeri encoding an extracellular protease termed yrp1 (Yersinia ruckeri protease 1) was cloned from a Sau3AI library constructed in pUC19 and analysed in gelatin-supplemented medium. The nucleotide sequence of the yrp1 gene indicated an ORF encoding a protein of 477 aa. On the basis of the high degree of homology in the amino acid sequence as well as its conservative motifs, this protein was included within the serralysin metalloendopeptidase subfamily (EC 3.4.24.12). The yrp1 N-terminal sequence showed a 14 aa propeptide followed by a 10 aa sequence identical to the one deduced previously from the 47 kDa purified protease. Additional results demonstrated that the yrp1 gene encodes the 47 kDa protein. In contrast to other Yersinia species, the yrp1 protease is secreted by a type I Gram-negative bacterial ABC exporter protein secretion system composed of three genes termed yrpD, yrpE and yrpF, and a protease inhibitor inh. The development of genetic methods for this species has allowed the exploration of the organization and the putative role of the Yrp1 genetic locus. Thus, site-directed insertion mutations into the yrp1 and the yrpE genes were constructed by the integration of the mobilizable suicide vector pIVET8 containing internal portions of both coding sequences. Complementation studies of those mutants with different loci indicated that they are organized as a single operon. The mutant strains lacked protease activity as well as the Yrp1 protein and, although physiologically similar to the parental strain when growing on nutrient broth medium, they were attenuated in virulence when bacteria were injected intraperitoneally into rainbow trout (Oncorhynchus mykiss). This is the first report of defined mutations in Y. ruckeri to show the implication of a factor such as an extracellular protease in pathogenesis.
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Affiliation(s)
- L Fernández
- Área de Microbiologia, Departamento de Biologia Funcional, Facultad de Medicina, Instituto Universitario de Biotecnologia de Asturias, Universidad de Oviedo, 33006 Oviedo, Spain1
| | - P Secades
- Área de Microbiologia, Departamento de Biologia Funcional, Facultad de Medicina, Instituto Universitario de Biotecnologia de Asturias, Universidad de Oviedo, 33006 Oviedo, Spain1
| | - J R Lopez
- Área de Microbiologia, Departamento de Biologia Funcional, Facultad de Medicina, Instituto Universitario de Biotecnologia de Asturias, Universidad de Oviedo, 33006 Oviedo, Spain1
| | - I Márquez
- SERIDA, Laboratorio de Sanidad Animal de Jove, 33299 Gijon, Spain2
| | - J A Guijarro
- Área de Microbiologia, Departamento de Biologia Funcional, Facultad de Medicina, Instituto Universitario de Biotecnologia de Asturias, Universidad de Oviedo, 33006 Oviedo, Spain1
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14
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Marits R, Tshuikina M, Pirhonen M, Laasik E, Mäe A. Regulation of the expression of prtW::gusA fusions in Erwinia carotovora subsp. carotovora. MICROBIOLOGY (READING, ENGLAND) 2002; 148:835-842. [PMID: 11882719 DOI: 10.1099/00221287-148-3-835] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Erwinia carotovora subsp. carotovora, a Gram-negative phytopathogenic bacterium, secretes an extracellular metalloprotease, PrtW. Previous results demonstrated that protease activity is necessary for the normal progression of disease symptoms caused by this bacterium. The present study revealed that the prtW gene constitutes an independent transcriptional unit. It is demonstrated that introduction of the prtW(+) plasmid in trans into the prtW(-) mutant restores the protease activity in this strain. Gene fusions to the gusA (beta-glucuronidase) reporter were employed to analyse the transcription of prtW. The transcription of prtW is dependent on many environmental signals. When the bacteria were grown in the presence of potato extract, the expression of the protease gene was markedly higher at the beginning of the exponential phase of growth than that observed when cells were grown in the presence of polygalacturonate (PGA). Analysis of the promoter revealed that an essential regulatory region resided between 371 and 245 bp 5' of the translational start site. As this sequence showed no homology to the KdgR box it may be involved in the binding of an unknown negative regulator protein in E. carotovora subsp. carotovora. The differential responses of prtW expression to potato extract and to PGA appeared to be dependent on the KdgR repressor and the response regulator ExpA. According to the results presented here, it is conceivable that the multiple regulatory network allows flexibility in the expression of the prtW gene during different stages of infection.
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Affiliation(s)
- Reet Marits
- Department of Genetics Institute of Molecular and Cell Biology, Tartu University Estonian Biocentre, Riia 23, Tartu 51010, Estonia1
| | - Marina Tshuikina
- Department of Genetics Institute of Molecular and Cell Biology, Tartu University Estonian Biocentre, Riia 23, Tartu 51010, Estonia1
| | - Minna Pirhonen
- Department of Plant Biology, Swedish University of Agricultural Sciences (SLU), PO Box 7080, SE-75007 Uppsala, Sweden2
| | - Eve Laasik
- Department of Genetics Institute of Molecular and Cell Biology, Tartu University Estonian Biocentre, Riia 23, Tartu 51010, Estonia1
| | - Andres Mäe
- Department of Genetics Institute of Molecular and Cell Biology, Tartu University Estonian Biocentre, Riia 23, Tartu 51010, Estonia1
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15
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Zhang Y, Bak DD, Heid H, Geider K. Molecular characterization of a protease secreted by Erwinia amylovora. J Mol Biol 1999; 289:1239-51. [PMID: 10373365 DOI: 10.1006/jmbi.1999.2846] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A protease with a molecular mass of 48 kDa is secreted by the fire blight pathogen Erwinia amylovora in minimal medium. We characterized this activity as a metalloprotease, since the enzyme was inhibited by EDTA and o -phenanthroline. A gene cluster was determined to encode four genes connected to protease expression, including a structural gene (prtA) and three genes (prtD, prtE, prtF) for secretion of the protease, which are transcribed in the same direction. The organization of the protease gene cluster in E. amylovora is different from that in other Gram-negative bacteria, such as Erwinia chrysanthemi, Pseudomonas aeruginosa and Serratia marcescens. On the basis of the conservative motif of metalloproteases, PrtA was identified to be a member of the metzincin subfamily of zinc-binding metalloproteases, and was confirmed to be the 48 kDa protease on gels by sequencing of tryptic peptide fragments derived from the protein. The protease is apparently secreted into the external medium through the type I secretion pathway via PrtD, PrtE and PrtF which share more than 90% identity with the secretion apparatus for lipase of S. marcescens. A protease mutant was created by Tn 5 -insertions, and the mutation localized in the prtD gene. The lack of protease reduced colonization of an E. amylovora secretion mutant labelled with the gene for the green fluorescent protein (gfp) in the parenchyma of apple leaves.
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Affiliation(s)
- Y Zhang
- Max-Planck-Institut für Zellbiologie, Rosenhof, Ladenburg, D-68526, Germany
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16
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Izadi-Pruneyre N, Wolff N, Redeker V, Wandersman C, Delepierre M, Lecroisey A. NMR studies of the C-terminal secretion signal of the haem-binding protein, HasA. EUROPEAN JOURNAL OF BIOCHEMISTRY 1999; 261:562-8. [PMID: 10215870 DOI: 10.1046/j.1432-1327.1999.00305.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
HasA is a haem-binding protein which is secreted under iron-deficiency conditions by the gram-negative bacterium Serratia marcescens. It is a monomer of 19 kDa (187 residues) able to bind free haem as well as to capture it from haemoglobin. HasA delivers haem to a specific outer-membrane receptor HasR and allows the bacteria to grow in the absence of any other source of iron. It is secreted by a signal peptide-independent pathway which involves a C-terminal secretion signal and an ABC (ATP-binding cassette) transporter. The C-terminal region of the secretion signal containing the essential secretion motif is cleaved during or after the secretion process by proteases secreted by the bacteria. In this work, we study by 1H NMR the conformation of the C-terminal extremity of HasA in the whole protein and that of the isolated secretion signal peptide in a zwitterionic micelle complex that mimicks the membrane environment. We identify a helical region followed by a random-coil C-terminus in the peptide-micelle complex and we show that in both the whole protein and the complex, the last 15 residues containing the motif essential for secretion are highly flexible and unstructured. This flexibility may be a prerequisite to the recognition of HasA by its ABC transporter. We determine the cleavage site of the C-terminal extremity of the protein and analyse the effect of the cleavage on the haem acquisition process.
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Affiliation(s)
- N Izadi-Pruneyre
- Laboratoire de Résonance Magnétique Nucléaire, CNRS URA 1129, Institut Pasteur, Paris,
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17
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12 Virulence Determinants in the Bacterial Phytopathogen Erwinia. J Microbiol Methods 1999. [DOI: 10.1016/s0580-9517(08)70123-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
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18
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Shevchik VE, Boccara M, Vedel R, Hugouvieux-Cotte-Pattat N. Processing of the pectate lyase PelI by extracellular proteases of Erwinia chrysanthemi 3937. Mol Microbiol 1998; 29:1459-69. [PMID: 9781882 DOI: 10.1046/j.1365-2958.1998.01028.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Erwinia chrysanthemi causes soft rot on various plants. The maceration of plant tissues is mainly due to the action of endopectate lyases. The E. chrysanthemi strain 3937 produces eight endopectate lyases (PelA, PelB, PelC, PelD, PelE, PelI, PelL and PelZ) that are secreted by the Out pathway. The necrotic response elicited by the wild-type E. chrysanthemi strain on tobacco leaves is due to an extracellular protein secreted by the Out machinery. Purification of the active factor revealed that it corresponds to a pectate lyase presenting immunological cross-reaction with PelI. Analysis of pelI and out mutants indicated that the necrosis-inducing pectate lyase results from a post-translational modification of PelI occurring extracellularly both in culture media and in planta. This modification consists of the cleavage of 97 N-terminal amino acids by the extracellular proteases of E. chrysanthemi. The enzymatic properties of the maturated form, PelI-3, are not, or only weakly, modified. However, this maturation gives rise to a small size and basic form that is active as a defence elicitor in plants.
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Affiliation(s)
- V E Shevchik
- Laboratoire de Génétique Moléculaire des Microorganismes, UMR-CNRS 5577, INSA, Villeurbanne, France
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19
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Delepelaire P. Erwinia metalloprotease permease: aspects of secretion pathway and secretion functions. Methods Enzymol 1998; 292:67-81. [PMID: 9711547 DOI: 10.1016/s0076-6879(98)92008-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- P Delepelaire
- Département des Biotechnologies, Institut Pasteur, Paris, France
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20
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Bacterial toxin transport. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s1874-592x(96)80005-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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21
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Ertesvåg H, Høidal HK, Hals IK, Rian A, Doseth B, Valla S. A family of modular type mannuronan C-5-epimerase genes controls alginate structure in Azotobacter vinelandii. Mol Microbiol 1995; 16:719-31. [PMID: 7476166 DOI: 10.1111/j.1365-2958.1995.tb02433.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The L-guluronic acid residues in the Azotobacter vinelandii polysaccharide alginate originate from a post-polymerization reaction catalysed by the enzyme mannuronan C-5-epimerase (ME). We have previously reported the cloning and expression of an A. vinelandii gene encoding this enzyme, and we show here that the organism encodes at least four other ME genes originating from a common ancestor gene by a complex rearrangement process. The biological function of the corresponding enzymes is probably to catalyse the formation of alginates with a variety of physical properties. This model may explain the origin of the structural variability found in alginates isolated both from prokaryotic and eukaryotic organisms. The A. vinelandii enzymes may also potentially be useful for certain medical and biotechnological applications of this commercially important polysaccharide.
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Affiliation(s)
- H Ertesvåg
- UNIGEN Centre for Molecular Biology, University of Trondheim, Norway
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22
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Létoffé S, Ghigo JM, Wandersman C. Secretion of the Serratia marcescens HasA protein by an ABC transporter. J Bacteriol 1994; 176:5372-7. [PMID: 8071214 PMCID: PMC196723 DOI: 10.1128/jb.176.17.5372-5377.1994] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We previously identified a Serratia marcescens extracellular protein, HasA, able to bind heme and required for iron acquisition from heme and hemoglobin by the bacterium. This novel type of extracellular protein does not have a signal peptide and does not show sequence similarities to other proteins. HasA secretion was reconstituted in Escherichia coli, and we show here that like many proteins lacking a signal peptide, HasA has a C-terminal targeting sequence and is secreted by a specific ATP binding cassette (ABC) transporter consisting of three proteins, one inner membrane protein with a conserved ATP binding domain, called the ABC; a second inner membrane protein; and a third, outer membrane component. Since the three S. marcescens components of the HasA transporter have not yet been identified, the reconstituted HasA secretion system is a hybrid. It consists of the two S. marcescens inner membrane-specific components, HasD and HasE, associated with an outer membrane component coming from another bacterial ABC transporter, such as the E. coli TolC protein, the outer membrane component of the hemolysin transporter, or the Erwinia chrysanthemi PrtF protein, the outer membrane component of the protease transporter. This hybrid transporter was first shown to allow the secretion of the S. marcescens metalloprotease and the E. chrysanthemi metalloproteases B and C. On account of that, the two S. marcescens components HasD and HasE were previously named PrtDSM and PrtESM, respectively. However, HasA is secreted neither by the PrtD-PrtE-PrtF transporter (the genuine E. chrysanthemi protease transporter) nor by the HlyB-HlhD-TolC transporter (the hemolysin transporter). Moreover, HasA, coexpressed in the same cell, strongly inhibits the secretion of proteases B and C by their own transporter, indicating that the E. chrysanthemi transporter recognizes HasA. Since PrtF could replace TolC in the constitution of the HasA transporter, this indicates that the secretion block does not take place at the level of the outer membrane component but rather at an earlier step of interaction between HasA and the inner membrane components.
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Affiliation(s)
- S Létoffé
- Unité de Physiologie Cellulaire, Institut Pasteur (Centre National de la Recherche Scientifique URA1300), Paris, France
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23
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Ghigo J, Wandersman C. A carboxyl-terminal four-amino acid motif is required for secretion of the metalloprotease PrtG through the Erwinia chrysanthemi protease secretion pathway. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)37064-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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24
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Collmer A, Bauer DW. Erwinia chrysanthemi and Pseudomonas syringae: plant pathogens trafficking in extracellular virulence proteins. Curr Top Microbiol Immunol 1994; 192:43-78. [PMID: 7859513 DOI: 10.1007/978-3-642-78624-2_3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- A Collmer
- Department of Plant Pathology, Cornell University, Ithaca, NY 14853-4203
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25
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Létoffé S, Ghigo JM, Wandersman C. Identification of two components of the Serratia marcescens metalloprotease transporter: protease SM secretion in Escherichia coli is TolC dependent. J Bacteriol 1993; 175:7321-8. [PMID: 8226679 PMCID: PMC206876 DOI: 10.1128/jb.175.22.7321-7328.1993] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The Serratia marcescens metalloprotease (protease SM) belongs to a family of proteins secreted from gram-negative bacteria by a signal peptide-independent pathway which requires a specific transporter consisting of three proteins: two in the inner membrane and one in the outer membrane. The prtDSM and prtESM genes encoding the two S. marcescens inner membrane components were cloned and expressed in Escherichia coli. Their nucleotide sequence revealed high overall homology with the two analogous inner membrane components of the Erwinia chrysanthemi protease secretion apparatus and lower, but still significant, homology with the two analogous inner membrane components of the E. coli hemolysin transporter. When expressed in E. coli, these two proteins, PrtDSM and PrtESM, allowed the secretion of protease SM only in the presence of TolC protein, the outer membrane component of the hemolysin transporter.
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Affiliation(s)
- S Létoffé
- Unité de Génétique Moléculaire, Institut Pasteur (Centre National de la Recherche Scientifique URA 1149, Paris, France
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