A novel RNA polymerase-binding protein controlling genes involved in spore germination in Bacillus subtilis.

ABSTRACT: A growing class of proteins regulates transcription through interaction with DNA-dependent RNA polymerase. Here we report that a recently identified, highly conserved sporulation gene ylyA encodes a novel RNA polymerase-binding protein that influences the expression of genes under the control of the late-acting, sporulation sigma factor σ(G) in Bacillus subtilis. Spores from a ylyA mutant exhibited defects in germination corresponding to changes in the levels of membrane receptors for spore germinants and a protein channel governing the release of dipicolinic acid and hydration of the spore core during germination. Purified YlyA interacted with RNA polymerase and stimulated transcription from promoters dependent on σ(G) but not promoters dependent on the housekeeping sigma factor σ(A) . Yl

SUBMITTER: Traag BA 

PROVIDER: S-EPMC3694343 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature