What are the Primary Regulator Units That Control Endospore Formation

Question

What are the primary regulator units that control endospore formation?
A) allosteric proteins
B) antisense RNAs
C) riboswitches
D) sigma factors

Accepted Answer

Sigma factors play a crucial role in controlling endospore formation in Bacillus subtilis. Sigma factors bind to RNA polymerase and facilitate the transcription of genes involved in endospore formation, including genes required for the synthesis of the spore coat and cortex. Different sigma factors are responsible for regulating different stages of endospore formation. For example, the sigma factor SigF is involved in initiating the process of sporulation, while the sigma factor SigG controls the expression of genes required for spore coat assembly.