The Bacillus subtilis divIVA1 mutation causes misplacement of the septum during cell division, resulting in the formation of small, circular, anucleate mini-cells [1]. Inactivation of divIVA produces a mini-cell phenotype, whereas overproduction of DivIVA results in a filamentation phenotype [1]. These proteins appear to contain coiled-coils.

1: The divIVA minicell locus of Bacillus subtilis. Cha JH, Stewart GC; J Bacteriol 1997;179:1671-1683. PMID:9045828

2: Unconventional organization of the division and cell wall gene cluster of Streptococcus pneumoniae. Massidda O, Anderluzzi D, Friedli L, Feger G; Microbiology 1998;144:3069-3078. PMID:9846742