The mother cell line expression with the identification of the σE and σK regulons and the regulation by SpoIIID of σE-controlled genes.

aA gene is considered differentially expressed when the P value is bwe search for promoters recognized by the different sigma factors active in mother cell upstream of the TSS mapped by RNA-seq. These promoters are listed in Table S7.cProteins that are detected associated with the spore by a proteomic approach [39].dUsing the consensus sequence recognized by SpoIIID in B. subtilis[14], we identified a putative SpoIIID binding motif upstream of these genes.eσK? indicated the presence of sequences similar to σK consensus elements upstream of these genes but the TSS was not mapped (see Table S7).