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Overview

Uniprot IDA0A8D1JQV5
Protein NameS-methyl-5'-thioadenosine phosphorylase
Gene NameMTAP
OrganismSus scrofa

Kla Sites from experimental identification

Position Flanking peptide
130 EVLIETAKKLGLRCH
139 LGLRCHSKGTMITIE
214 DRVLKTLKENANKAK
22 SDALILGKIKNVDCV
24 ALILGKIKNVDCVLL
5 ***GRTEKYVDTPFG
92 QFIDRTTKRPQTFYD

Function

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

Protein Sequence

10 GRTEKYVDTP 20 FGKPSDALIL 30 GKIKNVDCVL 40 LARHGRQHTI 50 MPSKVNYQAN 60 IWALKEEGCT 70 HIIVTTACGS 80 LKEEIQPGDF 90 IIIDQFIDRT 100 TKRPQTFYDG 110 NHSCARGVCH 120 IPMAEPFCPK 130 TREVLIETAK 140 KLGLRCHSKG 150 TMITIEGPRF 160 SSRAESLTFQ 170 TWGADVINMT 180 TVPEVVLAKE 190 AGICYASIAM 200 ATDYDCWKEH 210 EEVVSVDRVL 220 KTLKENANKA 230 KSLLLTTIPQ 240 IGSMEWSETL 250 HNLKIGSFSV LVLNP

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005634 nucleus
Molecular Function GO:0017061 S-methyl-5-thioadenosine phosphorylase activity
Biological Process GO:0019509 L-methionine salvage from methylthioadenosine
Biological Process GO:0006166 purine ribonucleoside salvage

Reference

[1] Fan S, Zhou R, Wen H, Ye H, Ma S et al.. Global profiling of protein lactylome in porcine granulosa cells.. J Ovarian Res 18(1):177. 2025 Aug 8. PMID: 40781717.