Response regulator; May play the central regulatory role in sporulation. It may be an element of the effector pathway responsible for the activation of sporulation genes in response to nutritional stress. Spo0A may act in concert with Spo0H (a sigma factor) to control the expression of some genes that are critical to the sporulation process. Repressor of abrB, activator of the spoIIa operon. Binds the DNA sequence 5'-TGNCGAA-3' (0A box).

GTPase involved in cell partioning and DNA repair; Necessary for the transition from vegetative growth to stage 0 or stage II of sporulation, but sporulation subsequent to these stages is unaffected at 45 degrees Celsius. This ts effect is probably due solely to the E-79 mutation. Required for expression of early sporulation genes, further suggesting a role in the induction of sporulation. Depletion effects on sporulation can be partially suppressed by missense mutations in spo0A. Strains depleted for obg stop growing after about 3 hours and do not induce the sigma-B factor following e [...]

Negative regulatory phosphatase acting on Spo0A-P (sporulation); Aspartyl-phosphate phosphatase which specifically dephosphorylates the sporulation transcription factor Spo0A-P and negatively regulates the sporulation initiation pathway in order to control the proper timing of sporulation. Belongs to the spo0E family.

Two-component sensor histidine kinase; Phosphorylates the sporulation-regulatory protein spo0A under biofilm growth conditions. Also able to weakly phosphorylate spo0F.

Two-component sensor histidine kinase; Phosphorylates the sporulation-regulatory proteins spo0A and spo0F. Spo0F is required for the KinB activity.

Two-component sensor histidine kinase; Phosphorylates the sporulation-regulatory protein spo0A.

Histidine kinase phosphorylating Spo0A; Phosphorylates the sporulation-regulatory protein spo0F and, to a minor extent, is responsible for heterogeneous expression of spo0A during logarithmical growth. Also phosphorylates spo0A under biofilm growth conditions.

Regulator of SpoIVFB (stage IV sporulation); Implicated in the coupling of mother cell to forespore gene expression. Required for spore formation at 37 degrees Celsius, but not at 30 degrees Celsius. SpoIVFA plays a central role in both maintaining the SpoIVFA/BofA/SpoIVFB complex and anchoring it to the outer forespore membrane. SpoIVFA brings BofA into close proximity to SpoIVFB, allowing BofA to inhibit SpoIVFB. Increased accumulation of SpoIVFA seems to inhibit the activity of SpoIVFB and thus regulates the activation of sigma-K.