Identification
HMDB Protein ID CDBP00389
Secondary Accession Numbers Not Available
Name S-methyl-5'-thioadenosine phosphorylase
Description Not Available
Synonyms
  1. 5'-methylthioadenosine phosphorylase
  2. MTA phosphorylase
  3. MTAPase
  4. MTAP
Gene Name MTAP
Protein Type Enzyme
Biological Properties
General Function Involved in transferase activity, transferring pentosyl groups
Specific 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.
GO Classification
Biological Process
purine ribonucleoside salvage
L-methionine salvage from methylthioadenosine
polyamine metabolic process
nucleobase-containing compound metabolic process
Cellular Component
cytosol
nucleus
Function
catalytic activity
transferase activity
transferase activity, transferring pentosyl groups
transferase activity, transferring glycosyl groups
Molecular Function
phosphorylase activity
S-methyl-5-thioadenosine phosphorylase activity
Process
metabolic process
nitrogen compound metabolic process
cellular nitrogen compound metabolic process
nucleobase, nucleoside, nucleotide and nucleic acid metabolic process
nucleobase, nucleoside and nucleotide metabolic process
nucleoside metabolic process
Cellular Location
  1. Cytoplasm
Pathways
Gene Properties
Chromosome Location 9
Locus 9p21
SNPs MTAP
Gene Sequence
>852 bp
ATGGCCTCTGGCACCACCACCACCGCCGTGAAGATTGGAATAATTGGTGGAACAGGCCTG
GATGATCCAGAAATTTTAGAAGGAAGAACTGAAAAATATGTGGATACTCCATTTGGCAAG
CCATCTGATGCCTTAATTTTGGGGAAGATAAAAAATGTTGATTGCATCCTCCTTGCAAGG
CATGGAAGGCAGCACACCATCATGCCTTCAAAGGTCAACTACCAGGCGAACATCTGGGCT
TTGAAGGAAGAGGGCTGTACACATGTCATAGTGACCACAGCTTGTGGCTCCTTGAGGGAG
GAGATTCAGCCCGGCGATATTGTCATTATTGATCAGTTCATTGACAGGACCACTATGAGA
CCTCAGTCCTTCTATGATGGAAGTCATTCTTGTGCCAGAGGAGTGTGCCATATTCCAATG
GCTGAGCCGTTTTGCCCCAAAACGAGAGAGGTTCTTATAGAGACTGCTAAGAAGCTAGGA
CTCCGGTGCCACTCAAAGGGGACAATGGTCACAATCGAGGGACCTCGTTTTAGCTCCCGG
GCAGAAAGCTTCATGTTCCGCACCTGGGGGGCGGATGTTATCAACATGACCACAGTTCCA
GAGGTGGTTCTTGCTAAGGAGGCTGGAATTTGTTACGCAAGTATCGCCATGGCGACAGAT
TATGACTGCTGGAAGGAGCACGAGGAAGCAGTTTCGGTGGACCGGGTCTTAAAGACCCTG
AAAGAAAACGCTAATAAAGCCAAAAGCTTACTGCTCACTACCATACCTCAGATAGGGTCC
ACAGAATGGTCAGAAACCCTCCATAACCTGAAGAATATGGCCCAGTTTTCTGTTTTATTA
CCAAGACATTAA
Protein Properties
Number of Residues 283
Molecular Weight 31235.76
Theoretical pI 7.188
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>S-methyl-5'-thioadenosine phosphorylase
MASGTTTTAVKIGIIGGTGLDDPEILEGRTEKYVDTPFGKPSDALILGKIKNVDCVLLAR
HGRQHTIMPSKVNYQANIWALKEEGCTHVIVTTACGSLREEIQPGDIVIIDQFIDRTTMR
PQSFYDGSHSCARGVCHIPMAEPFCPKTREVLIETAKKLGLRCHSKGTMVTIEGPRFSSR
AESFMFRTWGADVINMTTVPEVVLAKEAGICYASIAMATDYDCWKEHEEAVSVDRVLKTL
KENANKAKSLLLTTIPQIGSTEWSETLHNLKNMAQFSVLLPRH
GenBank ID Protein 847724
UniProtKB/Swiss-Prot ID Q13126
UniProtKB/Swiss-Prot Entry Name MTAP_HUMAN
PDB IDs
GenBank Gene ID U22233
GeneCard ID MTAP
GenAtlas ID MTAP
HGNC ID HGNC:7413
References
General References Not Available