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. 1995 Feb;63(2):729–732. doi: 10.1128/iai.63.2.729-732.1995

Functional conservation among members of the Salmonella typhimurium InvA family of proteins.

C C Ginocchio 1, J E Galán 1
PMCID: PMC173061  PMID: 7822051

Abstract

InvA, which is essential for Salmonella spp. to enter cultured epithelial cells, is a member of a family of proteins involved in either flagellar biosynthesis or the secretion of virulence determinants by a number of plant and mammalian pathogens. The predicted overall secondary structures of these proteins show significant similarities and indicate a modular construction with a hydrophobic amino-terminal half, consisting of six to eight potential transmembrane domains, and a hydrophilic carboxy terminus which is predicted to reside in the cytoplasm. These proteins can be aligned over the entire length of their polypeptide sequences, with the highest degree of homology found in the amino terminus and clusters of conserved residues in the carboxy terminus. We examined the functional conservation among members of this protein family by assessing the ability of MxiA of Shigella flexneri and LcrD of Yersinia pseudotuberculosis to restore invasiveness to an invA mutant of Salmonella typhimurium. We found that MxiA was able to complement the entry defect of the invA mutant strain of S. typhimurium. In contrast, LcrD failed to complement the same strain. However, a plasmid carrying a gene encoding a chimeric protein consisting of the amino terminus of LcrD and the carboxy terminus of InvA complemented the defect of the Salmonella invA mutant. These results indicate that the secretory systems in which these proteins participate are functionally similar and that the Salmonella and Shigella systems are very closely related. These data also suggest that determinants of specificity may be located at the carboxy termini of these proteins.

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Selected References

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  1. Andrews G. P., Maurelli A. T. mxiA of Shigella flexneri 2a, which facilitates export of invasion plasmid antigens, encodes a homolog of the low-calcium-response protein, LcrD, of Yersinia pestis. Infect Immun. 1992 Aug;60(8):3287–3295. doi: 10.1128/iai.60.8.3287-3295.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Carpenter P. B., Ordal G. W. Bacillus subtilis FlhA: a flagellar protein related to a new family of signal-transducing receptors. Mol Microbiol. 1993 Mar;7(5):735–743. doi: 10.1111/j.1365-2958.1993.tb01164.x. [DOI] [PubMed] [Google Scholar]
  3. Collazo C. M., Zierler M. K., Galán J. E. Functional analysis of the Salmonella typhimurium invasion genes invl and invJ and identification of a target of the protein secretion apparatus encoded in the inv locus. Mol Microbiol. 1995 Jan;15(1):25–38. doi: 10.1111/j.1365-2958.1995.tb02218.x. [DOI] [PubMed] [Google Scholar]
  4. Fenselau S., Balbo I., Bonas U. Determinants of pathogenicity in Xanthomonas campestris pv. vesicatoria are related to proteins involved in secretion in bacterial pathogens of animals. Mol Plant Microbe Interact. 1992 Sep-Oct;5(5):390–396. doi: 10.1094/mpmi-5-390. [DOI] [PubMed] [Google Scholar]
  5. Galán J. E., Curtiss R., 3rd Cloning and molecular characterization of genes whose products allow Salmonella typhimurium to penetrate tissue culture cells. Proc Natl Acad Sci U S A. 1989 Aug;86(16):6383–6387. doi: 10.1073/pnas.86.16.6383. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Galán J. E., Curtiss R., 3rd Distribution of the invA, -B, -C, and -D genes of Salmonella typhimurium among other Salmonella serovars: invA mutants of Salmonella typhi are deficient for entry into mammalian cells. Infect Immun. 1991 Sep;59(9):2901–2908. doi: 10.1128/iai.59.9.2901-2908.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Galán J. E., Ginocchio C., Costeas P. Molecular and functional characterization of the Salmonella invasion gene invA: homology of InvA to members of a new protein family. J Bacteriol. 1992 Jul;174(13):4338–4349. doi: 10.1128/jb.174.13.4338-4349.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Gemski P., Lazere J. R., Casey T., Wohlhieter J. A. Presence of a virulence-associated plasmid in Yersinia pseudotuberculosis. Infect Immun. 1980 Jun;28(3):1044–1047. doi: 10.1128/iai.28.3.1044-1047.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Gough C. L., Genin S., Lopes V., Boucher C. A. Homology between the HrpO protein of Pseudomonas solanacearum and bacterial proteins implicated in a signal peptide-independent secretion mechanism. Mol Gen Genet. 1993 Jun;239(3):378–392. doi: 10.1007/BF00276936. [DOI] [PubMed] [Google Scholar]
  10. Groisman E. A., Ochman H. Cognate gene clusters govern invasion of host epithelial cells by Salmonella typhimurium and Shigella flexneri. EMBO J. 1993 Oct;12(10):3779–3787. doi: 10.1002/j.1460-2075.1993.tb06056.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. He S. Y., Huang H. C., Collmer A. Pseudomonas syringae pv. syringae harpinPss: a protein that is secreted via the Hrp pathway and elicits the hypersensitive response in plants. Cell. 1993 Jul 2;73(7):1255–1266. doi: 10.1016/0092-8674(93)90354-s. [DOI] [PubMed] [Google Scholar]
  12. High N., Mounier J., Prévost M. C., Sansonetti P. J. IpaB of Shigella flexneri causes entry into epithelial cells and escape from the phagocytic vacuole. EMBO J. 1992 May;11(5):1991–1999. doi: 10.1002/j.1460-2075.1992.tb05253.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Huang H. C., Xiao Y., Lin R. H., Lu Y., Hutcheson S. W., Collmer A. Characterization of the Pseudomonas syringae pv. syringae 61 hrpJ and hrpI genes: homology of HrpI to a superfamily of proteins associated with protein translocation. Mol Plant Microbe Interact. 1993 Jul-Aug;6(4):515–520. doi: 10.1094/mpmi-6-515. [DOI] [PubMed] [Google Scholar]
  14. Kunkel T. A., Roberts J. D., Zakour R. A. Rapid and efficient site-specific mutagenesis without phenotypic selection. Methods Enzymol. 1987;154:367–382. doi: 10.1016/0076-6879(87)54085-x. [DOI] [PubMed] [Google Scholar]
  15. Malakooti J., Ely B., Matsumura P. Molecular characterization, nucleotide sequence, and expression of the fliO, fliP, fliQ, and fliR genes of Escherichia coli. J Bacteriol. 1994 Jan;176(1):189–197. doi: 10.1128/jb.176.1.189-197.1994. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Maurelli A. T., Baudry B., d'Hauteville H., Hale T. L., Sansonetti P. J. Cloning of plasmid DNA sequences involved in invasion of HeLa cells by Shigella flexneri. Infect Immun. 1985 Jul;49(1):164–171. doi: 10.1128/iai.49.1.164-171.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Miller S., Pesci E. C., Pickett C. L. A Campylobacter jejuni homolog of the LcrD/FlbF family of proteins is necessary for flagellar biogenesis. Infect Immun. 1993 Jul;61(7):2930–2936. doi: 10.1128/iai.61.7.2930-2936.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Plano G. V., Barve S. S., Straley S. C. LcrD, a membrane-bound regulator of the Yersinia pestis low-calcium response. J Bacteriol. 1991 Nov;173(22):7293–7303. doi: 10.1128/jb.173.22.7293-7303.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Ramakrishnan G., Zhao J. L., Newton A. The cell cycle-regulated flagellar gene flbF of Caulobacter crescentus is homologous to a virulence locus (lcrD) of Yersinia pestis. J Bacteriol. 1991 Nov;173(22):7283–7292. doi: 10.1128/jb.173.22.7283-7292.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Sansonetti P. J., Kopecko D. J., Formal S. B. Involvement of a plasmid in the invasive ability of Shigella flexneri. Infect Immun. 1982 Mar;35(3):852–860. doi: 10.1128/iai.35.3.852-860.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Sansonetti P. J. Molecular and cellular biology of Shigella flexneri invasiveness: from cell assay systems to shigellosis. Curr Top Microbiol Immunol. 1992;180:1–19. doi: 10.1007/978-3-642-77238-2_1. [DOI] [PubMed] [Google Scholar]
  22. Straley S. C., Skrzypek E., Plano G. V., Bliska J. B. Yops of Yersinia spp. pathogenic for humans. Infect Immun. 1993 Aug;61(8):3105–3110. doi: 10.1128/iai.61.8.3105-3110.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Studier F. W., Moffatt B. A. Use of bacteriophage T7 RNA polymerase to direct selective high-level expression of cloned genes. J Mol Biol. 1986 May 5;189(1):113–130. doi: 10.1016/0022-2836(86)90385-2. [DOI] [PubMed] [Google Scholar]
  24. Tabor S., Richardson C. C. A bacteriophage T7 RNA polymerase/promoter system for controlled exclusive expression of specific genes. Proc Natl Acad Sci U S A. 1985 Feb;82(4):1074–1078. doi: 10.1073/pnas.82.4.1074. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Venkatesan M. M., Buysse J. M., Kopecko D. J. Characterization of invasion plasmid antigen genes (ipaBCD) from Shigella flexneri. Proc Natl Acad Sci U S A. 1988 Dec;85(23):9317–9321. doi: 10.1073/pnas.85.23.9317. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Wei Z. M., Beer S. V. HrpI of Erwinia amylovora functions in secretion of harpin and is a member of a new protein family. J Bacteriol. 1993 Dec;175(24):7958–7967. doi: 10.1128/jb.175.24.7958-7967.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Wei Z. M., Laby R. J., Zumoff C. H., Bauer D. W., He S. Y., Collmer A., Beer S. V. Harpin, elicitor of the hypersensitive response produced by the plant pathogen Erwinia amylovora. Science. 1992 Jul 3;257(5066):85–88. doi: 10.1126/science.1621099. [DOI] [PubMed] [Google Scholar]

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