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Alternative sigma factors and the regulation of flagellar gene expression.
Helmann JD. Helmann JD. Mol Microbiol. 1991 Dec;5(12):2875-82. doi: 10.1111/j.1365-2958.1991.tb01847.x. Mol Microbiol. 1991. PMID: 1809831
Studies of sigma D-dependent functions in Bacillus subtilis.
Márquez LM, Helmann JD, Ferrari E, Parker HM, Ordal GW, Chamberlin MJ. Márquez LM, et al. J Bacteriol. 1990 Jun;172(6):3435-43. doi: 10.1128/jb.172.6.3435-3443.1990. J Bacteriol. 1990. PMID: 2111808 Free PMC article.
Cloning, sequencing, and disruption of the Bacillus subtilis sigma 28 gene.
Helmann JD, Márquez LM, Chamberlin MJ. Helmann JD, et al. J Bacteriol. 1988 Apr;170(4):1568-74. doi: 10.1128/jb.170.4.1568-1574.1988. J Bacteriol. 1988. PMID: 2832368 Free PMC article.
Isolation and characterization of the Bacillus subtilis sigma 28 factor.
Helmann JD, Masiarz FR, Chamberlin MJ. Helmann JD, et al. J Bacteriol. 1988 Apr;170(4):1560-7. doi: 10.1128/jb.170.4.1560-1567.1988. J Bacteriol. 1988. PMID: 3127378 Free PMC article.
DNA sequence analysis suggests that expression of flagellar and chemotaxis genes in Escherichia coli and Salmonella typhimurium is controlled by an alternative sigma factor.
Helmann JD, Chamberlin MJ. Helmann JD, et al. Proc Natl Acad Sci U S A. 1987 Sep;84(18):6422-4. doi: 10.1073/pnas.84.18.6422. Proc Natl Acad Sci U S A. 1987. PMID: 3306678 Free PMC article.
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