Crystal structure of ligand binding domain of CysB, a LysR member from Salmonella typhimurium LT2 in complex with effector ligand, O-acetylserine at 2.8A
CYSB_SALTY This protein is a positive regulator of gene expression for the cysteine regulon, a system of 10 or more loci involved in the biosynthesis of L-cysteine from inorganic sulfate. The inducer for CysB is N-acetylserine. CysB inhibits its own transcription.