Involved in sporulation-specific cell division (PubMed:19567872). Required for early stages of sporulation. Important in the process of growth cessation prior to sporulation-specific cell division. Recruits cell division protein FtsZ to the future septum sites and tethers the contractile ring structure (Z ring) to the cytoplasmic membrane during sporulation (By similarity). Stimulates polymerization and filament length of FtsZ in vitro (PubMed:21205868). Monomer (PubMed:19567872). Interacts with SsgA. Interacts with FtsZ (via N-terminus) (PubMed:21205868). Localizes to the divisome in sporogenic aerial hyphae in a ladder-like manner. Temporospatial localization is controlled by SsgA and it colocalizes with SsgA in presporulation foci. Localizes to the septum sites prior to FtsZ and after that colocalizes with FtsZ at the divisome throughout cell division. Belongs to the SsgA family.