Protein
O-acetyl-L-homoserine sulfhydrylase 1
Organism
Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Function
Catalyzes the conversion of O-acetyl-L-homoserine (OAH) into homocysteine in the methionine biosynthesis pathway. Has weak activity with O-acetyl-L-serine, O-phospho-L-serine, L-serine, O-succinyl-L-homoserine and L-homoserine. Shows low CTT beta-lyase activity and very low CTT gamma-synthase activity.
Similarity
Belongs to the trans-sulfuration enzymes family.
Sequence
MRFETLQLHAGYEPEPTTLSRQVPIYPTTSYVFKSPEHAANLFALKEFGNIYSRIMNPTVDVLEKRLAALEGGKAALATASGHAAQFLALTTLAQAGDNIVSTPNLYGGTFNQFKVTLKRLGIEVRFTSREERPEEFLALTDEKTRAWWVESIGNPALNIPDLEALAQAAREKGVALIVDNTFGMGGYLLRPLAWGAALVTHSLTKWVGGHGAVIAGAIVDGGNFPWEGGRYPLLTEPQPGYHGLRLTEAFGELAFIVKARVDGLRDQGQALGPFEAWVVLLGMETLSLRAERHVENTLHLAHWLLEQPQVAWVNYPGLPHHPHHDRAQKYFKGKPGAVLTFGLKGGYEAAKRFISRLKLISHLANVGDTRTLAIHPASTTHSQLSPEEQAQAGVSPEMVRLSVGLEHVEDLKAELKEALA