Part of a cell division machinery (PubMed:18987308, PubMed:19008417, PubMed:21255729). The CdvA, CdvB and CdvC proteins polymerize between segregating nucleoids and persist throughout cell division, forming a successively smaller structure during constriction (PubMed:18987308). Interacts with CdvA (PubMed:21255729). Interacts with CdvC (PubMed:19008417). Forms, with CdvA, colocalized band-like structures between segregating nucleoids (PubMed:18987308). Localizes to the mid-cell in dividing cells (PubMed:19008417). Induced around the genome segregation and cell division stages (PubMed:18987308). Down-regulated after UV irradiation, indicating division inhibition in response to DNA damage (PubMed:18987308). Expression is highest in dividing cells (PubMed:19008417). The winged-helix-like (wH-like) C-terminal extension is necessary and sufficient for interaction with CdvA.