ID Q0C5A9_HYPNA Unreviewed; 292 AA.
AC Q0C5A9;
DT 17-OCT-2006, integrated into UniProtKB/TrEMBL.
DT 17-OCT-2006, sequence version 1.
DT 27-MAR-2024, entry version 113.
DE RecName: Full=S-methyl-5'-thioadenosine phosphorylase {ECO:0000256|HAMAP-Rule:MF_01963};
DE EC=2.4.2.28 {ECO:0000256|HAMAP-Rule:MF_01963};
DE AltName: Full=5'-methylthioadenosine phosphorylase {ECO:0000256|HAMAP-Rule:MF_01963};
DE Short=MTA phosphorylase {ECO:0000256|HAMAP-Rule:MF_01963};
DE Short=MTAP {ECO:0000256|HAMAP-Rule:MF_01963};
GN Name=mtaP {ECO:0000313|EMBL:ABI77197.1};
GN Synonyms=mtnP {ECO:0000256|HAMAP-Rule:MF_01963};
GN OrderedLocusNames=HNE_0354 {ECO:0000313|EMBL:ABI77197.1};
OS Hyphomonas neptunium (strain ATCC 15444).
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomonadales;
OC Hyphomonadaceae; Hyphomonas.
OX NCBI_TaxID=228405 {ECO:0000313|EMBL:ABI77197.1, ECO:0000313|Proteomes:UP000001959};
RN [1] {ECO:0000313|EMBL:ABI77197.1, ECO:0000313|Proteomes:UP000001959}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 15444 {ECO:0000313|EMBL:ABI77197.1,
RC ECO:0000313|Proteomes:UP000001959};
RX PubMed=16980487; DOI=10.1128/JB.00111-06;
RA Badger J.H., Hoover T.R., Brun Y.V., Weiner R.M., Laub M.T., Alexandre G.,
RA Mrazek J., Ren Q., Paulsen I.T., Nelson K.E., Khouri H.M., Radune D.,
RA Sosa J., Dodson R.J., Sullivan S.A., Rosovitz M.J., Madupu R.,
RA Brinkac L.M., Durkin A.S., Daugherty S.C., Kothari S.P., Giglio M.G.,
RA Zhou L., Haft D.H., Selengut J.D., Davidsen T.M., Yang Q., Zafar N.,
RA Ward N.L.;
RT "Comparative genomic evidence for a close relationship between the
RT dimorphic prosthecate bacteria Hyphomonas neptunium and Caulobacter
RT crescentus.";
RL J. Bacteriol. 188:6841-6850(2006).
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_01963}.
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_01963};
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_01963}.
CC -!- SUBUNIT: Homohexamer. Dimer of a homotrimer. {ECO:0000256|HAMAP-
CC Rule:MF_01963}.
CC -!- SIMILARITY: Belongs to the PNP/MTAP phosphorylase family. MTAP
CC subfamily. {ECO:0000256|HAMAP-Rule:MF_01963}.
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DR EMBL; CP000158; ABI77197.1; -; Genomic_DNA.
DR RefSeq; WP_011645384.1; NC_008358.1.
DR AlphaFoldDB; Q0C5A9; -.
DR STRING; 228405.HNE_0354; -.
DR KEGG; hne:HNE_0354; -.
DR eggNOG; COG0005; Bacteria.
DR HOGENOM; CLU_054456_0_1_5; -.
DR UniPathway; UPA00904; UER00873.
DR Proteomes; UP000001959; Chromosome.
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 Glycosyltransferase {ECO:0000256|HAMAP-Rule:MF_01963,
KW ECO:0000313|EMBL:ABI77197.1};
KW Purine salvage {ECO:0000256|HAMAP-Rule:MF_01963};
KW Reference proteome {ECO:0000313|Proteomes:UP000001959};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_01963, ECO:0000313|EMBL:ABI77197.1}.
FT DOMAIN 5..236
FT /note="Nucleoside phosphorylase"
FT /evidence="ECO:0000259|Pfam:PF01048"
FT BINDING 12
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT BINDING 54..55
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT BINDING 87..88
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT BINDING 185
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT BINDING 186
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT BINDING 209..211
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT SITE 167
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
FT SITE 222
FT /note="Important for substrate specificity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01963"
SQ SEQUENCE 292 AA; 31277 MW; 42BAFADFC15AFA52 CRC64;
MSGWKLGIIG GSGLYALDGL EDRREHTVET PWGPPSDALV SGRIGEVELV FLPRHGKGHR
LTPTDVPYRA NIAALKMAGV TDVLSISACG SLQEQYAPGE VVAADQFIDR TVSREKTFFG
AGLVGHVSMA EPVCARLSAL AANAMEAVGG KVHRGGTYLA MEGPQFSSLA ESRLYRQWGC
DVIGMTNMPE AKLAREAELP YATLAMVTDY DCWRADTDAV TVTNVLEIMA QNTALARRAI
LQLAHSLNGT PRTLSPQGIE TCLDFALITA PDLRDPVMID KLRAIAGRAL GV
//
