The genome sequence of the anaerobic, sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough
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The D. vulgaris genome contains DVU_1584 encoding a sigma-70 family RNA polymerase sigma factor
"Desulfovibrio vulgaris Hildenborough is a model organism for studying the energy metabolism of sulfate-reducing bacteria (SRB)"
Global analysis of heat shock response in Desulfovibrio vulgaris Hildenborough
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DVU_1584 identified as rpoH (sigma-32 heat shock sigma factor)
"promoter sequences corresponding to the alternate sigma factors sigma(32) and sigma(54)"
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Predicted rpoH promoter motif is aTTGAAA-[N12]-aaCTaT
"Analysis of the genome sequence revealed the presence of features of both negative and positive regulation which included the CIRCE element and promoter sequences corresponding to the alternate sigma factors sigma(32) and sigma(54)"
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Study established heat shock regulon in D. vulgaris including chaperones and proteases
"Transcriptional response (1.7-fold change or greater; Z >/= 1.5) ranged from 1,135 genes at 15 min to 1,463 genes at 120 min for a temperature up-shift of 13 degrees C from a growth temperature of 37 degrees C for this organism"
Transcriptional response of Desulfovibrio vulgaris Hildenborough to oxidative stress mimicking environmental conditions.
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DVU_1584 (sigma-70 family protein) down-regulated under oxidative stress
"Three hundred and seven genes were responsive, with cellular roles in energy metabolism, protein fate, cell envelope and regulatory functions"
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Heat shock chaperone genes (GroE) up-regulated under oxidative stress
"multiple genes encoding heat shock proteins, peptidases and proteins with heat shock promoters"
Effects of biocides on gene expression in the sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough
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Biocide (glutaraldehyde) induces heat shock regulon
"Glut induces expression of genes required to degrade or refold proteins inactivated by either chemical modification or heat shock"
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RpoH-linked genes (groEL, groES, clpX, clpB, htpG) up-regulated
"Glut induces expression of genes required to degrade or refold proteins inactivated by either chemical modification or heat shock"
Regulation of Nitrite Stress Response in Desulfovibrio vulgaris Hildenborough, a Model Sulfate-Reducing Bacterium.
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Decreased abundance of sigma-70 genes including rpoH (DVU_1584) and rpoD observed
"In this study, we show that DVU0621 (NrfR), a sigma54-dependent two-component system response regulator, is the positive regulator for this operon"
Gene Ontology annotation through association of InterPro records with GO terms
Automatic assignment of GO terms using logical inference, based on inter-ontology links
Combined Automated Annotation using Multiple IEA Methods
Deep research on Q72BQ0 (rpoH) in D. vulgaris Hildenborough
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DVU_1584 encodes sigma-32 heat shock sigma factor
"DVU_1584 encodes the alternative sigma factor RpoH (sigma-32), a member of the sigma-70 family mediating transcriptional responses to proteotoxic/heat and related stresses in D. vulgaris"