Abstract
The inhibition of development of Myxococcus xanthus by monoclonal antibody (MAb) 1604 has been further investigated with two MAbs produced against the affinity-purified cell surface antigen (CSA) 1604. Both of these second-generation MAbs, 4070 and 4054, reacted with the same band at 150 kilodaltons (kDa) on Western immunoblots of lysed and reduced cells. This band was also identified by MAb 1604. However, the affinity-purified CSA was a complex of the two proteins (51 and 23 kDa) and lipopolysaccharide (LPS) that the 150-kDa material comprised. One of the three MAbs, 4070, reacted with LPS on Western immunoblots. Another MAb, 4054, reacted with the 23-kDa protein, and MAb 1604 reacted with the 51-kDa protein found in the CSA complex. Competitive binding studies verified that MAbs 4054 and 1604 identified different epitopes, and MAb 4070 probably reacted with a third epitope of the CSA 1604 complex. MAb 4054 blocked development, although not as thoroughly as MAb 1604 did, when added at 60 micrograms/ml to cells undergoing submerged development. In contrast, MAb 4070 prevented sporulation in submerged development and induced the cells to reaggregate in rings around the initial aggregation centers. A mutant strain of M. xanthus that is deficient in the epitope for MAb 1604 retained the epitope for MAb 4054. The affinity-purified antigen 1604, when added to cells at greater than or equal to 550 ng/ml, altered the appearance of the fruiting bodies and at higher concentrations prevented fruiting body formation. The CSA 1604 moiety responsible for this inhibitory effect is apparently a peptide constituent and not the LPS.
Full text
PDFImages in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Burnens A., Demotz S., Corradin G., Binz H., Bosshard H. R. Epitope mapping by chemical modification of free and antibody-bound protein antigen. Science. 1987 Feb 13;235(4790):780–783. doi: 10.1126/science.2433768. [DOI] [PubMed] [Google Scholar]
- Dworkin M., Kaiser D. Cell interactions in myxobacterial growth and development. Science. 1985 Oct 4;230(4721):18–24. doi: 10.1126/science.3929384. [DOI] [PubMed] [Google Scholar]
- Engvall E. Enzyme immunoassay ELISA and EMIT. Methods Enzymol. 1980;70(A):419–439. doi: 10.1016/s0076-6879(80)70067-8. [DOI] [PubMed] [Google Scholar]
- Ey P. L., Prowse S. J., Jenkin C. R. Isolation of pure IgG1, IgG2a and IgG2b immunoglobulins from mouse serum using protein A-sepharose. Immunochemistry. 1978 Jul;15(7):429–436. doi: 10.1016/0161-5890(78)90070-6. [DOI] [PubMed] [Google Scholar]
- Fink J. M., Kalos M., Zissler J. F. Isolation of cell surface antigen mutants of Myxococcus xanthus by use of monoclonal antibodies. J Bacteriol. 1989 Apr;171(4):2033–2041. doi: 10.1128/jb.171.4.2033-2041.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fink J. M., Zissler J. F. Characterization of lipopolysaccharide from Myxococcus xanthus by use of monoclonal antibodies. J Bacteriol. 1989 Apr;171(4):2028–2032. doi: 10.1128/jb.171.4.2028-2032.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gabay J., Schwartz M. Monoclonal antibody as a probe for structure and function of an Escherichia coli outer membrane protein. J Biol Chem. 1982 Jun 25;257(12):6627–6630. [PubMed] [Google Scholar]
- Gill J. S., Dworkin M. Cell surface antigens during submerged development of Myxococcus xanthus examined with monoclonal antibodies. J Bacteriol. 1986 Nov;168(2):505–511. doi: 10.1128/jb.168.2.505-511.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gill J. S., Dworkin M. Isolation of additional monoclonal antibodies directed against cell surface antigens of Myxococcus xanthus cells undergoing submerged development. J Bacteriol. 1988 Dec;170(12):5953–5955. doi: 10.1128/jb.170.12.5953-5955.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gill J. S., Jarvis B. W., Dworkin M. Inhibition of development in Myxococcus xanthus by monoclonal antibody 1604. Proc Natl Acad Sci U S A. 1987 Jul;84(13):4505–4508. doi: 10.1073/pnas.84.13.4505. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gill J., Stellwag E., Dworkin M. Monoclonal antibodies against cell-surface antigens of developing cells of Myxococcus xanthus. Ann Inst Pasteur Microbiol. 1985 Jan-Feb;136A(1):11–18. doi: 10.1016/s0769-2609(85)80015-6. [DOI] [PubMed] [Google Scholar]
- Hagen D. C., Bretscher A. P., Kaiser D. Synergism between morphogenetic mutants of Myxococcus xanthus. Dev Biol. 1978 Jun;64(2):284–296. doi: 10.1016/0012-1606(78)90079-9. [DOI] [PubMed] [Google Scholar]
- Inouye M., Inouye S., Zusman D. R. Biosynthesis and self-assembly of protein S, a development-specific protein of Myxococcus xanthus. Proc Natl Acad Sci U S A. 1979 Jan;76(1):209–213. doi: 10.1073/pnas.76.1.209. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jarvis B. W., Dworkin M. Purification and properties of Myxococcus xanthus cell surface antigen 1604. J Bacteriol. 1989 Sep;171(9):4655–4666. doi: 10.1128/jb.171.9.4655-4666.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jemmerson R. Antigenicity and native structure of globular proteins: low frequency of peptide reactive antibodies. Proc Natl Acad Sci U S A. 1987 Dec;84(24):9180–9184. doi: 10.1073/pnas.84.24.9180. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kaiser D., Manoil C., Dworkin M. Myxobacteria: cell interactions, genetics, and development. Annu Rev Microbiol. 1979;33:595–639. doi: 10.1146/annurev.mi.33.100179.003115. [DOI] [PubMed] [Google Scholar]
- Kaiser D. Social gliding is correlated with the presence of pili in Myxococcus xanthus. Proc Natl Acad Sci U S A. 1979 Nov;76(11):5952–5956. doi: 10.1073/pnas.76.11.5952. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lagenaur C., Lemmon V. An L1-like molecule, the 8D9 antigen, is a potent substrate for neurite extension. Proc Natl Acad Sci U S A. 1987 Nov;84(21):7753–7757. doi: 10.1073/pnas.84.21.7753. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Losick R., Youngman P., Piggot P. J. Genetics of endospore formation in Bacillus subtilis. Annu Rev Genet. 1986;20:625–669. doi: 10.1146/annurev.ge.20.120186.003205. [DOI] [PubMed] [Google Scholar]
- Neff N. T., Lowrey C., Decker C., Tovar A., Damsky C., Buck C., Horwitz A. F. A monoclonal antibody detaches embryonic skeletal muscle from extracellular matrices. J Cell Biol. 1982 Nov;95(2 Pt 1):654–666. doi: 10.1083/jcb.95.2.654. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nelson D. R., Zusman D. R. Transport and localization of protein S, a spore coat protein, during fruiting body formation by Myxococcus xanthus. J Bacteriol. 1983 May;154(2):547–553. doi: 10.1128/jb.154.2.547-553.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- O'Connor K. A., Zusman D. R. Reexamination of the role of autolysis in the development of Myxococcus xanthus. J Bacteriol. 1988 Sep;170(9):4103–4112. doi: 10.1128/jb.170.9.4103-4112.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Panasenko S. M. Methylation of macromolecules during development in Myxococcus xanthus. J Bacteriol. 1985 Nov;164(2):495–500. doi: 10.1128/jb.164.2.495-500.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rutishauser U., Acheson A., Hall A. K., Mann D. M., Sunshine J. The neural cell adhesion molecule (NCAM) as a regulator of cell-cell interactions. Science. 1988 Apr 1;240(4848):53–57. doi: 10.1126/science.3281256. [DOI] [PubMed] [Google Scholar]
- Sheshberadaran H., Payne L. G. Protein antigen-monoclonal antibody contact sites investigated by limited proteolysis of monoclonal antibody-bound antigen: protein "footprinting". Proc Natl Acad Sci U S A. 1988 Jan;85(1):1–5. doi: 10.1073/pnas.85.1.1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shimkets L. J. Control of morphogenesis in myxobacteria. Crit Rev Microbiol. 1987;14(3):195–227. doi: 10.3109/10408418709104439. [DOI] [PubMed] [Google Scholar]
- Smith A. D., Wilson J. E. A modified ELISA that selectively detects monoclonal antibodies recognizing native antigen. J Immunol Methods. 1986 Nov 20;94(1-2):31–35. doi: 10.1016/0022-1759(86)90212-7. [DOI] [PubMed] [Google Scholar]
- Smith P. K., Krohn R. I., Hermanson G. T., Mallia A. K., Gartner F. H., Provenzano M. D., Fujimoto E. K., Goeke N. M., Olson B. J., Klenk D. C. Measurement of protein using bicinchoninic acid. Anal Biochem. 1985 Oct;150(1):76–85. doi: 10.1016/0003-2697(85)90442-7. [DOI] [PubMed] [Google Scholar]
- Wireman J. W., Dworkin M. Developmentally induced autolysis during fruiting body formation by Myxococcus xanthus. J Bacteriol. 1977 Feb;129(2):798–802. doi: 10.1128/jb.129.2.798-802.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wireman J. W., Dworkin M. Morphogenesis and developmental interactions in myxobacteria. Science. 1975 Aug 15;189(4202):516–523. doi: 10.1126/science.806967. [DOI] [PubMed] [Google Scholar]
- Young R. A., Davis R. W. Efficient isolation of genes by using antibody probes. Proc Natl Acad Sci U S A. 1983 Mar;80(5):1194–1198. doi: 10.1073/pnas.80.5.1194. [DOI] [PMC free article] [PubMed] [Google Scholar]