4l5c

Structural highlights

Function

[I0B503_SCHMA] Catalyzes the reversible phosphorylation of S-methyl-5'-thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. Involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. Responsible for the first step in the methionine salvage pathway after MTA has been generated from S-adenosylmethionine. Has broad substrate specificity with 6-aminopurine nucleosides as preferred substrates (By similarity).[HAMAP-Rule:MF_03155]

See Also

• 5'-deoxy-5'-methylthioadenosine phosphorylase