ID M9M1C7_PSEA3 Unreviewed; 316 AA.
AC M9M1C7;
DT 29-MAY-2013, integrated into UniProtKB/TrEMBL.
DT 29-MAY-2013, sequence version 1.
DT 27-MAR-2024, entry version 50.
DE RecName: Full=S-methyl-5'-thioadenosine phosphorylase {ECO:0000256|HAMAP-Rule:MF_03155};
DE EC=2.4.2.28 {ECO:0000256|HAMAP-Rule:MF_03155};
DE AltName: Full=5'-methylthioadenosine phosphorylase {ECO:0000256|HAMAP-Rule:MF_03155};
DE Short=MTA phosphorylase {ECO:0000256|HAMAP-Rule:MF_03155};
DE Short=MTAP {ECO:0000256|HAMAP-Rule:MF_03155};
DE Short=MTAPase {ECO:0000256|HAMAP-Rule:MF_03155};
GN ORFNames=PANT_9c00315 {ECO:0000313|EMBL:GAC73820.1};
OS Pseudozyma antarctica (strain T-34) (Yeast) (Candida antarctica).
OC Eukaryota; Fungi; Dikarya; Basidiomycota; Ustilaginomycotina;
OC Ustilaginomycetes; Ustilaginales; Ustilaginaceae; Moesziomyces.
OX NCBI_TaxID=1151754 {ECO:0000313|EMBL:GAC73820.1, ECO:0000313|Proteomes:UP000011976};
RN [1] {ECO:0000313|Proteomes:UP000011976}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=T-34 {ECO:0000313|Proteomes:UP000011976};
RX PubMed=23558529; DOI=10.1128/genomea.00064-13;
RA Morita T., Koike H., Koyama Y., Hagiwara H., Ito E., Fukuoka T., Imura T.,
RA Machida M., Kitamoto D.;
RT "Genome sequence of the basidiomycetous yeast Pseudozyma antarctica T-34, a
RT producer of the glycolipid biosurfactants mannosylerythritol lipids.";
RL Genome Announc. 1:E0006413-E0006413(2013).
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:0000256|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:0000256|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:0000256|HAMAP-
CC Rule:MF_03155}.
CC -!- SUBUNIT: Homotrimer. {ECO:0000256|HAMAP-Rule:MF_03155}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03155}.
CC Nucleus {ECO:0000256|HAMAP-Rule:MF_03155}.
CC -!- SIMILARITY: Belongs to the PNP/MTAP phosphorylase family. MTAP
CC subfamily. {ECO:0000256|HAMAP-Rule:MF_03155}.
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DR EMBL; DF196775; GAC73820.1; -; Genomic_DNA.
DR AlphaFoldDB; M9M1C7; -.
DR STRING; 1151754.M9M1C7; -.
DR OrthoDB; 168017at2759; -.
DR UniPathway; UPA00904; UER00873.
DR Proteomes; UP000011976; 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; Nucleoside phosphorylase domain; 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 NCBIfam; TIGR01694; MTAP; 1.
DR PANTHER; PTHR42679; S-METHYL-5'-THIOADENOSINE PHOSPHORYLASE; 1.
DR PANTHER; PTHR42679:SF2; S-METHYL-5'-THIOADENOSINE PHOSPHORYLASE; 1.
DR Pfam; PF01048; PNP_UDP_1; 1.
DR SUPFAM; SSF53167; Purine and uridine phosphorylases; 1.
DR PROSITE; PS01240; PNP_MTAP_2; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03155};
KW Glycosyltransferase {ECO:0000256|HAMAP-Rule:MF_03155};
KW Nucleus {ECO:0000256|HAMAP-Rule:MF_03155};
KW Purine salvage {ECO:0000256|ARBA:ARBA00022726, ECO:0000256|HAMAP-
KW Rule:MF_03155}; Reference proteome {ECO:0000313|Proteomes:UP000011976};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_03155}.
FT DOMAIN 16..266
FT /note="Nucleoside phosphorylase"
FT /evidence="ECO:0000259|Pfam:PF01048"
FT BINDING 22
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT BINDING 65..66
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT BINDING 98..99
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT BINDING 207
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT BINDING 208
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT BINDING 231..233
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT SITE 189
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
FT SITE 244
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03155"
SQ SEQUENCE 316 AA; 34067 MW; 6C732447AF7B223C CRC64;
MSVPVLDAWT GPAPLLGVIG GSGLYRLDSI APVAEVNIRT PWGAPSSPIT IAKTAAGNHV
AFLARHGRDH AILPSNVPNL ANIAALKHLG VRAILAFSAV GSLREEIAPK DFVIPSQIID
RTKGVRRASF FGFGEEENVV AHAGFGDPFC EILRPHVAQV VKQTLAEHNK DVSVHEAKTV
VCMEGPQFST RAESLMYRAW GGDIINMSVL PEAKLAREAE ISYVLIATAT DYDAWRPASA
AVNVAEVMES LKANVEASNK VTTTLLDAIY PLVGEDGEAV KAIKDSMKWS IMTKSSVVTP
KAKENLRFLH PWFAQE
//
