Organism
Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88)
Function
Specifically catalyzes the beta-elimination of phosphate from L-phosphoserine and the beta-addition of sulfite to the dehydroalanine intermediate to produce L-cysteate.
Similarity
Belongs to the threonine synthase family. Cysteate synthase subfamily.
Sequence
MGRFTLKCLKCGREYGQEYRLTCDNDDSLLRADYFEKKLELRDQPGIGRFHSWLPVQEELTTEAGPITYKSEALAKELGLSNLYIGFSGYWPEREALIKTCSFKELEAHPTMQLLKESGGKAIVLASAGNTGRAFAYSSSLTGTDAYIVVPDSGVSSIWLPEEPANSIHLISMTPGNDYTDAINLAGRLAKLPGMVPEGGARNVARREGMGTVMLDAAVTIGKMPDHYFQAVGSGTGGMSAWEASLRLRDDGRFGSKLPKLQLAQNLPFVPMYNAWKAGRREIIPDIDMKDAKKQIEETYATVLTNRAPPYSITGGLYDALVDTDGIMYAITREEALEAKALFESLEGIDILEPSAVAAASLLKAVEAGNVEKDDVILLNIAGGGFKRLKEDFTLFQVEPEVTVSSSEVSLDELKI