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PMID:8631715

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Citation

Sun, G, Sharkova, E, Chesnut, R, Birkey, S, Duggan, MF, Sorokin, A, Pujic, P, Ehrlich, SD and Hulett, FM (1996) Regulators of aerobic and anaerobic respiration in Bacillus subtilis. J. Bacteriol. 178:1374-85

Abstract

Two Bacillus subtilis genes, designated resD and resE, encode proteins that are similar to those of two-component signal transduction systems and play a regulatory role in respiration. The overlapping resD-resE genes are transcribed during vegetative growth from a very weak promoter directly upstream of resD. They are also part of a larger operon that includes three upstream genes, resABC (formerly orfX14, -15, and -16), the expression of which is strongly induced postexponentially. ResD is required for the expression of the following genes: resA, ctaA (required for heme A synthesis), and the petCBD operon (encoding subunits of the cytochrome bf complex). The resABC genes are essential genes which encode products with similarity to cytochrome c biogenesis proteins. resD null mutations are more deleterious to the cell than those of resE. resD mutant phenotypes, directly related to respiratory function, include streptomycin resistance, lack of production of aa3 or caa3 terminal oxidases, acid accumulation when grown with glucose as a carbon source, and loss of ability to grow anaerobically on a medium containing nitrate. A resD mutation also affected sporulation, carbon source utilization, and Pho regulon regulation. The data presented here support an activation role for ResD, and to a lesser extent ResE, in global regulation of aerobic and anaerobic respiration i B.subtilis.

Links

PubMed PMC177812

Keywords

Aerobiosis/genetics; Anaerobiosis/genetics; Bacillus subtilis/physiology; Bacillus subtilis/ultrastructure; Bacterial Proteins/genetics; Base Sequence; Chromosome Mapping; Cytochrome b Group/genetics; Enzyme Induction; Genes, Bacterial; Genes, Lethal; Membrane Proteins/genetics; Models, Genetic; Molecular Sequence Data; Mutation; Nitrate Reductase; Nitrate Reductases/biosynthesis; Operon; Phenotype; Promoter Regions, Genetic; Signal Transduction/genetics; Transcription, Genetic

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

BACSU:RESD

GO:0046679: response to streptomycin

ECO:0000315:

P

TABLE 2: resD and res DE mutants showed greater resistance to streptomycin than wild-type strain.

complete


See also

References

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