MTAP_ANODA
ID MTAP_ANODA Reviewed; 279 AA.
AC E3XFR6; W5J9D8;
DT 25-JAN-2012, integrated into UniProtKB/Swiss-Prot.
DT 16-MAR-2016, sequence version 2.
DT 03-AUG-2022, entry version 55.
DE RecName: Full=S-methyl-5'-thioadenosine phosphorylase {ECO:0000255|HAMAP-Rule:MF_03155};
DE EC=2.4.2.28 {ECO:0000255|HAMAP-Rule:MF_03155};
DE AltName: Full=5'-methylthioadenosine phosphorylase {ECO:0000255|HAMAP-Rule:MF_03155};
DE Short=MTA phosphorylase {ECO:0000255|HAMAP-Rule:MF_03155};
DE Short=MTAP {ECO:0000255|HAMAP-Rule:MF_03155};
DE Short=MTAPase {ECO:0000255|HAMAP-Rule:MF_03155};
GN ORFNames=AND_22863;
OS Anopheles darlingi (Mosquito).
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC Neoptera; Endopterygota; Diptera; Nematocera; Culicoidea; Culicidae;
OC Anophelinae; Anopheles.
OX NCBI_TaxID=43151;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=20920257; DOI=10.1186/1471-2164-11-529;
RA Mendes N.D., Freitas A.T., Vasconcelos A.T., Sagot M.F.;
RT "Combination of measures distinguishes pre-miRNAs from other stem-loops in
RT the genome of the newly sequenced Anopheles darlingi.";
RL BMC Genomics 11:529-529(2010).
CC -!- FUNCTION: Catalyzes the reversible phosphorylation of S-methyl-5'-
CC thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate.
CC Involved in the breakdown of MTA, a major by-product of polyamine
CC biosynthesis. Responsible for the first step in the methionine salvage
CC pathway after MTA has been generated from S-adenosylmethionine. Has
CC broad substrate specificity with 6-aminopurine nucleosides as preferred
CC substrates. {ECO:0000255|HAMAP-Rule:MF_03155}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=phosphate + S-methyl-5'-thioadenosine = adenine + S-methyl-5-
CC thio-alpha-D-ribose 1-phosphate; Xref=Rhea:RHEA:11852,
CC ChEBI:CHEBI:16708, ChEBI:CHEBI:17509, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58533; EC=2.4.2.28; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_03155};
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC pathway; S-methyl-5-thio-alpha-D-ribose 1-phosphate from S-methyl-5'-
CC thioadenosine (phosphorylase route): step 1/1. {ECO:0000255|HAMAP-
CC Rule:MF_03155}.
CC -!- SUBUNIT: Homotrimer. {ECO:0000255|HAMAP-Rule:MF_03155}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03155}.
CC Nucleus {ECO:0000255|HAMAP-Rule:MF_03155}.
CC -!- SIMILARITY: Belongs to the PNP/MTAP phosphorylase family. MTAP
CC subfamily. {ECO:0000255|HAMAP-Rule:MF_03155}.
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DR EMBL; ADMH02002078; ETN59465.1; -; Genomic_DNA.
DR AlphaFoldDB; E3XFR6; -.
DR SMR; E3XFR6; -.
DR STRING; 43151.ADAC008941-PA; -.
DR VEuPathDB; VectorBase:ADAC008941; -.
DR eggNOG; KOG3985; Eukaryota.
DR InParanoid; E3XFR6; -.
DR OMA; ADPFCPE; -.
DR OrthoDB; 1616485at2759; -.
DR UniPathway; UPA00904; UER00873.
DR Proteomes; UP000000673; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0017061; F:S-methyl-5-thioadenosine phosphorylase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019509; P:L-methionine salvage from methylthioadenosine; IEA:UniProtKB-UniRule.
DR GO; GO:0006166; P:purine ribonucleoside salvage; IEA:UniProtKB-KW.
DR CDD; cd09010; MTAP_SsMTAPII_like_MTIP; 1.
DR Gene3D; 3.40.50.1580; -; 1.
DR HAMAP; MF_01963; MTAP; 1.
DR InterPro; IPR010044; MTAP.
DR InterPro; IPR000845; Nucleoside_phosphorylase_d.
DR InterPro; IPR035994; Nucleoside_phosphorylase_sf.
DR InterPro; IPR018099; Purine_phosphorylase-2_CS.
DR PANTHER; PTHR42679; PTHR42679; 1.
DR Pfam; PF01048; PNP_UDP_1; 1.
DR SUPFAM; SSF53167; SSF53167; 1.
DR TIGRFAMs; TIGR01694; MTAP; 1.
DR PROSITE; PS01240; PNP_MTAP_2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Glycosyltransferase; Nucleus; Purine salvage;
KW Reference proteome; Transferase.
FT CHAIN 1..279
FT /note="S-methyl-5'-thioadenosine phosphorylase"
FT /id="PRO_0000415118"
FT BINDING 13
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 55..56
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 88..89
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 191
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 192
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 215..217
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT SITE 173
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT SITE 228
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
SQ SEQUENCE 279 AA; 30473 MW; D232471A61D94420 CRC64;
MGTKVKIGII GGSGLDDSQI IENRTERVVN THFGIPSDVL IEGKIAGVEC VLLARHGRNH
SIMPTNVNYR ANIWALKTLG CTHVLVSTAT GSLRDEIHPG DIVIPDNFID RTTKRVQTFY
DGNELLVGVC HIPMEPAFCS RTRDVLIETA RELGIAGVHN SGTVVTIEGP RFSSKAESNL
FRQWGAHLVN MTLVPEVVLA KEAGLCYAAI AMATDYDCWR ETGEDVNVAD VLATFKKNVT
KVTELIINAI PKIAALDWTE TIEELAKTVN TSIMLPHSN
