MTAP_TUBMM
ID MTAP_TUBMM Reviewed; 309 AA.
AC D5GFR0;
DT 25-JAN-2012, integrated into UniProtKB/Swiss-Prot.
DT 25-JAN-2012, sequence version 2.
DT 03-AUG-2022, entry version 52.
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=GSTUM_00007013001;
OS Tuber melanosporum (strain Mel28) (Perigord black truffle).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Pezizomycetes;
OC Pezizales; Tuberaceae; Tuber.
OX NCBI_TaxID=656061;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Mel28;
RX PubMed=20348908; DOI=10.1038/nature08867;
RA Martin F., Kohler A., Murat C., Balestrini R., Coutinho P.M., Jaillon O.,
RA Montanini B., Morin E., Noel B., Percudani R., Porcel B., Rubini A.,
RA Amicucci A., Amselem J., Anthouard V., Arcioni S., Artiguenave F.,
RA Aury J.M., Ballario P., Bolchi A., Brenna A., Brun A., Buee M.,
RA Cantarel B., Chevalier G., Couloux A., Da Silva C., Denoeud F.,
RA Duplessis S., Ghignone S., Hilselberger B., Iotti M., Marcais B., Mello A.,
RA Miranda M., Pacioni G., Quesneville H., Riccioni C., Ruotolo R.,
RA Splivallo R., Stocchi V., Tisserant E., Viscomi A.R., Zambonelli A.,
RA Zampieri E., Henrissat B., Lebrun M.H., Paolocci F., Bonfante P.,
RA Ottonello S., Wincker P.;
RT "Perigord black truffle genome uncovers evolutionary origins and mechanisms
RT of symbiosis.";
RL Nature 464:1033-1038(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}.
CC -!- SEQUENCE CAUTION:
CC Sequence=CAZ83353.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR EMBL; FN430220; CAZ83353.1; ALT_INIT; Genomic_DNA.
DR AlphaFoldDB; D5GFR0; -.
DR SMR; D5GFR0; -.
DR STRING; 656061.D5GFR0; -.
DR eggNOG; KOG3985; Eukaryota.
DR InParanoid; D5GFR0; -.
DR UniPathway; UPA00904; UER00873.
DR Proteomes; UP000006911; 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..309
FT /note="S-methyl-5'-thioadenosine phosphorylase"
FT /id="PRO_0000415136"
FT BINDING 19
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 64..65
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 97..98
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 201
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 202
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT BINDING 225..227
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT SITE 183
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
FT SITE 238
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03155"
SQ SEQUENCE 309 AA; 33148 MW; 0D3FA92C97BF9093 CRC64;
MPLPDTFSES VRIAVIGGTG ISALEAEGFT AVASLDIQTP YGAPGSPLTI LKTPQNTPIA
FLSRHGLHHE LTPTEIPNRA NIAALRSIGV RSIIAFSAVG SLQEHIRPRD FVVPSQIIDR
TKGLRASTFF EGGLVGHVGF ADPFDSELSK VVFDIGSDGV LNGEGVKMHK DALLICMEGP
QFSTRAESNL YRSWGGDVIN MSALPEAKLA KEAEIAYVMV CMSTDYDCWK TNEAAVTVET
VMGNMHANGA NAKHLAAAIL KELAKEEHQD LVGAKHLEGL SKWACCTAPA GRKAEVVKKI
EFMLPGYFS
