ID   HPRT_METOI              Reviewed;         183 AA.
AC   F8AJL1;
DT   22-FEB-2012, integrated into UniProtKB/Swiss-Prot.
DT   21-SEP-2011, sequence version 1.
DT   25-MAY-2022, entry version 49.
DE   RecName: Full=Hypoxanthine/guanine phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_01467};
DE            Short=HGPRTase {ECO:0000255|HAMAP-Rule:MF_01467};
DE            EC=2.4.2.8 {ECO:0000255|HAMAP-Rule:MF_01467};
GN   Name=hpt {ECO:0000255|HAMAP-Rule:MF_01467}; OrderedLocusNames=Metok_1229;
OS   Methanothermococcus okinawensis (strain DSM 14208 / JCM 11175 / IH1).
OC   Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC   Methanococcaceae; Methanothermococcus.
OX   NCBI_TaxID=647113;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 14208 / JCM 11175 / IH1;
RA   Lucas S., Han J., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA   Peters L., Mikhailova N., Held B., Han C., Tapia R., Land M., Hauser L.,
RA   Kyrpides N., Ivanova N., Pagani I., Sieprawska-Lupa M., Takai K.,
RA   Miyazaki J., Whitman W., Woyke T.;
RT   "Complete sequence of chromosome of Methanothermococcus okinawensis IH1.";
RL   Submitted (MAY-2011) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes a salvage reaction resulting in the formation of
CC       IMP that is energically less costly than de novo synthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_01467}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=diphosphate + IMP = 5-phospho-alpha-D-ribose 1-diphosphate +
CC         hypoxanthine; Xref=Rhea:RHEA:17973, ChEBI:CHEBI:17368,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:58017, ChEBI:CHEBI:58053; EC=2.4.2.8;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01467};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=diphosphate + GMP = 5-phospho-alpha-D-ribose 1-diphosphate +
CC         guanine; Xref=Rhea:RHEA:25424, ChEBI:CHEBI:16235, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:58017, ChEBI:CHEBI:58115; EC=2.4.2.8;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01467};
CC   -!- PATHWAY: Purine metabolism; IMP biosynthesis via salvage pathway; IMP
CC       from hypoxanthine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01467}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01467}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01467}.
CC   -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC       family. Archaeal HPRT subfamily. {ECO:0000255|HAMAP-Rule:MF_01467}.
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DR   EMBL; CP002792; AEH07197.1; -; Genomic_DNA.
DR   RefSeq; WP_013867380.1; NC_015636.1.
DR   AlphaFoldDB; F8AJL1; -.
DR   SMR; F8AJL1; -.
DR   STRING; 647113.Metok_1229; -.
DR   EnsemblBacteria; AEH07197; AEH07197; Metok_1229.
DR   GeneID; 10773385; -.
DR   KEGG; mok:Metok_1229; -.
DR   eggNOG; arCOG00030; Archaea.
DR   HOGENOM; CLU_126376_0_0_2; -.
DR   OMA; FIHPISD; -.
DR   OrthoDB; 88302at2157; -.
DR   UniPathway; UPA00591; UER00648.
DR   Proteomes; UP000009296; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0052657; F:guanine phosphoribosyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0004422; F:hypoxanthine phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0043103; P:hypoxanthine salvage; IEA:UniProtKB-UniRule.
DR   GO; GO:0032264; P:IMP salvage; IEA:UniProtKB-UniPathway.
DR   GO; GO:0006166; P:purine ribonucleoside salvage; IEA:UniProtKB-KW.
DR   CDD; cd06223; PRTases_typeI; 1.
DR   Gene3D; 3.40.50.2020; -; 1.
DR   HAMAP; MF_01467; Hypx_phosphoribosyltr; 1.
DR   InterPro; IPR026597; HGPRTase-like.
DR   InterPro; IPR000836; PRibTrfase_dom.
DR   InterPro; IPR029057; PRTase-like.
DR   Pfam; PF00156; Pribosyltran; 1.
DR   SUPFAM; SSF53271; SSF53271; 1.
DR   PROSITE; PS00103; PUR_PYR_PR_TRANSFER; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Glycosyltransferase; Purine salvage; Transferase.
FT   CHAIN           1..183
FT                   /note="Hypoxanthine/guanine phosphoribosyltransferase"
FT                   /id="PRO_0000415485"
SQ   SEQUENCE   183 AA;  20232 MW;  215A03625F8F8596 CRC64;
     MNLLEDTLKS CPIVKRGEYN YFIHPITDGV PLMNSQLLRE VATKIIKISD MDIDKIVTAE
     AMGIPIATTI SLYTDIPYVI MRKRKYLLEG EIPVHQETGY SKGELYLNGV NKGDKVLIVD
     DVISTGGTMV AIIKALEKAG AHIKDIVCVI ERGNGKEEVK EKTGYDVKTL VKIDVVNGKV
     VIL