5'-methylthioadenosine/S-adenosylhomocysteine nucleosidase 1 At4g38800 S-adenosylhomocysteine nucleosidase MTAN MTN1 MAPHGDGLSDIEEPEVDAQSEILRPISSVVFVIAMQAEALPLVNKFGLSETTDSPLGKGLPWVLYHGVHKDLRINVVCPGRDAALGIDSVGTVPASLITFASIQALKPDIIINAGTCGGFKVKGANIGDVFLVSDVVFHDRRIPIPMFDLYGVGLRQAFSTPNLLKELNLKIGRLSTGDSLDMSTQDETLIIANDATLKDMEGAAVAYVADLLKIPVVFLKAVTDLVDGDKPTAEEFLQNLTVVTAALEGTATKVINFINGRNLSDL T9A14.80 5'-methylthioadenosine nucleosidase MTAN1 Enzyme of the methionine cycle that catalyzes the irreversible cleavage of the glycosidic bond in 5'- methylthioadenosine (MTA) to adenine and 5'-methylthioribose. Contributes to the maintenance of AdoMet homeostasis and is required to sustain high rates of ethylene synthesis. Inactive towards S-adenosylhomocysteine (SAH/AdoHcy). 267 MTN1_ARATH MTA/SAH nucleosidase 1