Protein
Carboxy-terminal processing protease CtpB
Organism
Bacillus subtilis (strain 168)
Function
Involved in the signal transduction pathway leading to the proteolytic activation of the mother cell transcription factor pro-sigma-K during sporulation. The signaling serine protease CtpB triggers pro-sigma-K processing by cleaving the pre-processed regulatory protein SpoIVFA and is necessary for the proper timing of sigma-K activation.
Similarity
Belongs to the peptidase S41A family.
Sequence
MNQKIMAVIAAGSMLFGGAGVYAGINLLEMDKPQTAAVPATAQADSERDKAMDKIEKAYELISNEYVEKVDREKLLEGAIQGMLSTLNDPYSVYMDKQTAKQFSDSLDSSFEGIGAEVGMEDGKIIIVSPFKKSPAEKAGLKPNDEIISINGESMAGKDLNHAVLKIRGKKGSSVSMKIQRPGTKKQLSFRIKRAEIPLETVFASEKKVQGHSVGYIAISTFSEHTAEDFAKALRELEKKEIEGLVIDVRGNPGGYLQSVEEILKHFVTKDQPYIQIAERNGDKKRYFSTLTHKKAYPVNVITDKGSASASEILAGALKEAGHYDVVGDTSFGKGTVQQAVPMGDGSNIKLTLYKWLTPNGNWIHKKGIEPTIAIKQPDYFSAGPLQLKEPLKVDMNNEDVKHAQVLLKGLSFDPGREDGYFSKDMKKAVMAFQDQNKLNKTGVIDTRTAETLNQQIEKKKSDEKNDLQLQTALKSLFVN