There are twelve genes/proteins which initiate sporulation in Bacillus subtilis and eleven repressors, including Sda.
Sda KipI Spo0A ComA SinR RapA, RapB, RapE, and RapH Spo0E, YisI, and YnzD GTP-bound CodY AbrB Hpr DnaA In the table below, the term 'Activators' refers to genes/proteins that ultimately result in initiation of sporulation and 'Repressors' refers to the ones that inhibit this initiation of sporulation. KinA KinB Spo0A Spo0H (H) Spo0B Spo0F ComA SinI KipA PhrA PhrE PhrH 
