Cse60 is expressed during sporulation in Bacillus subtilis. Transcription commences around 2h after the start of sporulation and had an absolute requirement for the transcription factor sigmaE. Cse60 is an acidic product of only 60 residues, whose function is not known [1].

1: cse15, cse60, and csk22 are new members of mother-cell-specific sporulation regulons in Bacillus subtilis. Henriques AO, Bryan EM, Beall BW, Moran CP Jr; J Bacteriol. 1997;179:389-398. PMID:8990290