The heat shock genes in B. subtilis can be classified into several groups according to their regulation [1], and the sigma gene, sigI, of Bacillus subtilis belongs to the group IV heat-shock response genes and has many orthologues in the bacterial ph ...
The heat shock genes in B. subtilis can be classified into several groups according to their regulation [1], and the sigma gene, sigI, of Bacillus subtilis belongs to the group IV heat-shock response genes and has many orthologues in the bacterial phylum Firmicutes [1]. Regulation of sigma factor I is carried out by RsgI from the same operon, and this N-terminal cytoplasmic portion of RsgI ('upstream' of the single transmembrane helix) has been shown to interact directly with Sigma-I [2].