The sporulation-specific SpoVIF (YjcC) protein of Bacillus subtilis is essential for the development of heat-resistant spores. Its expression is governed by SigK [1,2].

1: Bacillus subtilis spoVIF (yjcC) gene, involved in coat assembly and spore resistance. Kuwana R, Yamamura S, Ikejiri H, Kobayashi K, Ogasawara N, Asai K, Sadaie Y, Takamatsu H, Watabe K; Microbiology. 2003;149:3011-3021. PMID:14523132

2: Functional relationship between SpoVIF and GerE in gene regulation during sporulation of Bacillus subtilis. Kuwana R, Ikejiri H, Yamamura S, Takamatsu H, Watabe K; Microbiology. 2004;150:163-170. PMID:14702409