Sigma factors

Overview of Bacillus subtilis sigma factors

• SigA: household sigma factor
  (list of SigA controlled genes)
• SigB: general stress sigma factor
• SigD: sigma factor for chemotaxis and motility genes
• SigE: early mother cell-specific sporulation sigma factor
• SigF: early forespore-specific sporulation sigma factor
• SigG: late forespore-specific sporulation sigma factor
• SigH: sigma factor that controls genes of the transition phase
• SigI:
• SigK: late mother cell-specific sporulation sigma factor
• SigL: enhancer-dependent sigma factor (Sigma-54 family)
• SigM: ECF sigma factor, controls genes required at high salt concentrations
• SigV: ECF sigma factor
• SigW: ECF sigma factor, mediates the transcriptional response to cell wall stress PubMed
• SigX: ECF sigma factor
• SigY: ECF sigma factor
• SigZ: ECF sigma factor
• Xpf
• YlaC
• YvrI-YvrH: (composite sigma factor)

Targets of ECF sigma factors

Yun Luo, Kei Asai, Yoshito Sadaie, John D Helmann
Transcriptomic and phenotypic characterization of a Bacillus subtilis strain without extracytoplasmic function σ factors.
J Bacteriol: 2010, 192(21);5736-45
[PubMed:20817771] [WorldCat.org] [DOI] (I p)