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. 1990 Aug;172(8):4178–4186. doi: 10.1128/jb.172.8.4178-4186.1990

Phenotypes of Bacillus subtilis mutants altered in the precursor-specific region of sigma E.

R M Jonas 1, H K Peters 3rd 1, W G Haldenwang 1
PMCID: PMC213240  PMID: 2115864

Abstract

sigma E is a sporulation-specific sigma factor of Bacillus subtilis that is synthesized from an inactive precursor protein (P31). The structural gene (sigE) for P31 was reengineered by oligonucleotide-directed mutagenesis to encode sigma E directly. The sequence specifying the first amino acid of sigma E (GGC) was placed immediately downstream of the initiating codon (ATG) of P31. The resulting sigE allele (sigE delta 84) encodes a sigma E-like protein which differs from the "processed product" by a single Met residue at its amino terminus. B. subtilis strains which carried this allele were Spo- and contained no detectable sigma E. The sigE delta 84 allele generated a product in Escherichia coli which, by quantitative Western immunoblot analysis, was present at 10 to 20% of the level of product (P31) obtained from a wild-type allele. A sigma E-like product was also not detected in two B. subtilis strains with missense mutations in the sequence encoding the processed region of P31. These results suggest that sigma E is a highly labile protein that is stabilized during its synthesis by an element of the precursor sequence. A mutant allele (sigE delta 48) which made an active sigma E-like protein in B. subtilis was isolated. This gene specified a product in which five amino acids, not derived from the P31 processed region, were joined to P31 at a position eight amino acids upstream of the processing site. The sigE delta 48 product was not processed, but it activated the sigma E -dependent spoIID promoter in vivo. The sigE delta 48 product therefore lost both an essential target for processing and a region which inhibited sigma sigma E activity. Cells which carried sig E delta 48 were Spo-. The basis of the sigE delta 48-dependent defect in sporulation is unknown, but the sigma E delta 48 activity appeared to persist beyond the time in development (4 h after onset sporulation) when wild-type sigma E activity declines. Thus, it may interfere with the proper regulation of late sporulation genes.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Adelman J. P., Hayflick J. S., Vasser M., Seeburg P. H. In vitro deletional mutagenesis for bacterial production of the 20,000-dalton form of human pituitary growth hormone. DNA. 1983;2(3):183–193. doi: 10.1089/dna.1983.2.183. [DOI] [PubMed] [Google Scholar]
  2. Bachmair A., Finley D., Varshavsky A. In vivo half-life of a protein is a function of its amino-terminal residue. Science. 1986 Oct 10;234(4773):179–186. doi: 10.1126/science.3018930. [DOI] [PubMed] [Google Scholar]
  3. Errington J. A general method for fusion of the Escherichia coli lacZ gene to chromosomal genes in Bacillus subtilis. J Gen Microbiol. 1986 Nov;132(11):2953–2966. doi: 10.1099/00221287-132-11-2953. [DOI] [PubMed] [Google Scholar]
  4. Flückiger J., Christen P. Degradation of the precursor of mitochondrial aspartate aminotransferase in chicken embryo fibroblasts. J Biol Chem. 1988 Mar 25;263(9):4131–4138. [PubMed] [Google Scholar]
  5. Gold L. Posttranscriptional regulatory mechanisms in Escherichia coli. Annu Rev Biochem. 1988;57:199–233. doi: 10.1146/annurev.bi.57.070188.001215. [DOI] [PubMed] [Google Scholar]
  6. Gryczan T. J., Contente S., Dubnau D. Characterization of Staphylococcus aureus plasmids introduced by transformation into Bacillus subtilis. J Bacteriol. 1978 Apr;134(1):318–329. doi: 10.1128/jb.134.1.318-329.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Haldenwang W. G., Lang N., Losick R. A sporulation-induced sigma-like regulatory protein from B. subtilis. Cell. 1981 Feb;23(2):615–624. doi: 10.1016/0092-8674(81)90157-4. [DOI] [PubMed] [Google Scholar]
  8. Helmann J. D., Chamberlin M. J. Structure and function of bacterial sigma factors. Annu Rev Biochem. 1988;57:839–872. doi: 10.1146/annurev.bi.57.070188.004203. [DOI] [PubMed] [Google Scholar]
  9. Jonas R. M., Haldenwang W. G. Influence of spo mutations on sigma E synthesis in Bacillus subtilis. J Bacteriol. 1989 Sep;171(9):5226–5228. doi: 10.1128/jb.171.9.5226-5228.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Jonas R. M., Weaver E. A., Kenney T. J., Moran C. P., Jr, Haldenwang W. G. The Bacillus subtilis spoIIG operon encodes both sigma E and a gene necessary for sigma E activation. J Bacteriol. 1988 Feb;170(2):507–511. doi: 10.1128/jb.170.2.507-511.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Jones C., Holland I. B. Role of the SulB (FtsZ) protein in division inhibition during the SOS response in Escherichia coli: FtsZ stabilizes the inhibitor SulA in maxicells. Proc Natl Acad Sci U S A. 1985 Sep;82(18):6045–6049. doi: 10.1073/pnas.82.18.6045. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Kenney T. J., Kirchman P. A., Moran C. P., Jr Gene encoding sigma E is transcribed from a sigma A-like promoter in Bacillus subtilis. J Bacteriol. 1988 Jul;170(7):3058–3064. doi: 10.1128/jb.170.7.3058-3064.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Kenney T. J., Moran C. P., Jr Organization and regulation of an operon that encodes a sporulation-essential sigma factor in Bacillus subtilis. J Bacteriol. 1987 Jul;169(7):3329–3339. doi: 10.1128/jb.169.7.3329-3339.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Kunkel T. A. Rapid and efficient site-specific mutagenesis without phenotypic selection. Proc Natl Acad Sci U S A. 1985 Jan;82(2):488–492. doi: 10.1073/pnas.82.2.488. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. LaBell T. L., Trempy J. E., Haldenwang W. G. Sporulation-specific sigma factor sigma 29 of Bacillus subtilis is synthesized from a precursor protein, P31. Proc Natl Acad Sci U S A. 1987 Apr;84(7):1784–1788. doi: 10.1073/pnas.84.7.1784. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Rong S., Rosenkrantz M. S., Sonenshein A. L. Transcriptional control of the Bacillus subtilis spoIID gene. J Bacteriol. 1986 Mar;165(3):771–779. doi: 10.1128/jb.165.3.771-779.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Schaeffer P., Millet J., Aubert J. P. Catabolic repression of bacterial sporulation. Proc Natl Acad Sci U S A. 1965 Sep;54(3):704–711. doi: 10.1073/pnas.54.3.704. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Stragier P., Bouvier J., Bonamy C., Szulmajster J. A developmental gene product of Bacillus subtilis homologous to the sigma factor of Escherichia coli. Nature. 1984 Nov 22;312(5992):376–378. doi: 10.1038/312376a0. [DOI] [PubMed] [Google Scholar]
  20. Trempy J. E., Bonamy C., Szulmajster J., Haldenwang W. G. Bacillus subtilis sigma factor sigma 29 is the product of the sporulation-essential gene spoIIG. Proc Natl Acad Sci U S A. 1985 Jun;82(12):4189–4192. doi: 10.1073/pnas.82.12.4189. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Trempy J. E., Morrison-Plummer J., Haldenwang W. G. Synthesis of sigma 29, an RNA polymerase specificity determinant, is a developmentally regulated event in Bacillus subtilis. J Bacteriol. 1985 Jan;161(1):340–346. doi: 10.1128/jb.161.1.340-346.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Tsay Y. F., Thompson J. R., Rotenberg M. O., Larkin J. C., Woolford J. L., Jr Ribosomal protein synthesis is not regulated at the translational level in Saccharomyces cerevisiae: balanced accumulation of ribosomal proteins L16 and rp59 is mediated by turnover of excess protein. Genes Dev. 1988 Jun;2(6):664–676. doi: 10.1101/gad.2.6.664. [DOI] [PubMed] [Google Scholar]
  23. Yanisch-Perron C., Vieira J., Messing J. Improved M13 phage cloning vectors and host strains: nucleotide sequences of the M13mp18 and pUC19 vectors. Gene. 1985;33(1):103–119. doi: 10.1016/0378-1119(85)90120-9. [DOI] [PubMed] [Google Scholar]
  24. Yansura D. G., Henner D. J. Use of the Escherichia coli lac repressor and operator to control gene expression in Bacillus subtilis. Proc Natl Acad Sci U S A. 1984 Jan;81(2):439–443. doi: 10.1073/pnas.81.2.439. [DOI] [PMC free article] [PubMed] [Google Scholar]

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