Function
Catalyzes the cleavage of L-cysteine to form 2-aminoprop-2-enoate and sulfide. The former then spontaneously hydrolyzes to pyruvate and NH(3). May be responsible for the production of sulfide required for the biosynthesis of iron-sulfur centers in this archaea. Is very specific for L-cysteine, with no activity being detected with D-cysteine, L-homocysteine, 3-mercaptopropionate (cysteine without the amino group), cysteamine (cysteine without the carboxylate), or mercaptolactate (the hydroxyl analog of cysteine).
Sequence
MVSIMNKNELITEILKNEVVKALGCTEVGLIGYTVAKAKPEDLYSIKEIKLILDKGTFKNAFSVGVPNTNKFGILPAVVGGLLGREENKLEVFKDIKYDEKLEEFIENKLKIEVIDSDVYCKVIIKANKVYEAETKGSHSGKSLSDDLKNAYKSLTLKDFIDYIEDIPEEVIKIIKETIETNKNLSTPEVPEDFISLDLKDEILNHMLKKTVSAVYNRMIGINKPAMAIAGSGNMGLTATLPIIAYDEIKGHDEEKLTKSITLSALTTIYSAYHSSYISAMCGCVNRGGIGAVSGLSYYIFGFDRIEESIKSFTANLPGIVCDGGKIGCALKIASGVFAIYLSLFSKVPYTNGIVGKDFKECIENIGKIGKAMKPVDDEIIEILKNKK