Protein
Phosphoserine phosphatase RsbX
Organism
Bacillus subtilis (strain 168)
Function
Negative regulator of sigma-B activity. Dephosphorylates RsbS. Plays a role both in maintaining low sigma-B activity during growth and in reestablishing prestress sigma-B activity after induction. Could have a negative feedback role by indirectly communicating sigma-B protein levels.
Sequence
MIQVEENEHIQTLVYQLNKEGKSICGDSFFMKADDKELICAVADGLGSGSLANESSAAIKDLVENYASEDVESIIERCNQAMKNKRGATASILKINFEQRQFTYCSVGNVRFILHSPSGESFYPLPISGYLSGKPQKYKTHTATYEKGSKFIIHTDGLNVPDIRSHLKKGQSVEEISNSLKMYTTSRKDDLTYILGQLS