Stage III sporulation protein AH-like (IPR024232)

Short name: SpoIIIAH

Overlapping homologous superfamilies

Family relationships



Stage III sporulation protein AH (SpoIIIAH) is a protein that is involved in forespore engulfment. It forms a channel with SpoIIIAH that is open on the forespore end and closed (or gated) on the mother cell end. This allows sigma-E-directed gene expression in the mother-cell compartment of the sporangium to trigger the activation of sigma-G forespore-specific gene expression by a pathway of intercellular signaling [PMID: 18485064]. This family of proteins is found in bacteria, archaea and eukaryotes and so must have a wider function than in sporulation. Proteins in this family are typically between 174 and 223 amino acids in length.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.