ID   HPRT_METLA              Reviewed;         190 AA.
AC   F0T7W2;
DT   22-FEB-2012, integrated into UniProtKB/Swiss-Prot.
DT   03-MAY-2011, sequence version 1.
DT   27-MAR-2024, entry version 54.
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};
GN   OrderedLocusNames=Metbo_0197;
OS   Methanobacterium lacus (strain AL-21).
OC   Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC   Methanobacteriales; Methanobacteriaceae; Methanobacterium.
OX   NCBI_TaxID=877455;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AL-21;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA   Chertkov O., Detter J.C., Han C., Tapia R., Land M., Hauser L.,
RA   Kyrpides N., Ivanova N., Mikhailova N., Pagani I., Cadillo-Quiroz H.,
RA   Imachi H., Zinder S., Liu W., Woyke T.;
RT   "Complete sequence of Methanobacterium sp. AL-21.";
RL   Submitted (FEB-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; CP002551; ADZ08449.1; -; Genomic_DNA.
DR   RefSeq; WP_013643800.1; NC_015216.1.
DR   AlphaFoldDB; F0T7W2; -.
DR   SMR; F0T7W2; -.
DR   STRING; 877455.Metbo_0197; -.
DR   GeneID; 10276623; -.
DR   KEGG; mel:Metbo_0197; -.
DR   eggNOG; arCOG00030; Archaea.
DR   HOGENOM; CLU_126376_0_0_2; -.
DR   OrthoDB; 8323at2157; -.
DR   UniPathway; UPA00591; UER00648.
DR   Proteomes; UP000007490; 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   NCBIfam; NF040646; HPT_Archaea; 1.
DR   PANTHER; PTHR43864; HYPOXANTHINE/GUANINE PHOSPHORIBOSYLTRANSFERASE; 1.
DR   PANTHER; PTHR43864:SF1; HYPOXANTHINE_GUANINE PHOSPHORIBOSYLTRANSFERASE; 1.
DR   Pfam; PF00156; Pribosyltran; 1.
DR   SUPFAM; SSF53271; PRTase-like; 1.
DR   PROSITE; PS00103; PUR_PYR_PR_TRANSFER; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Glycosyltransferase; Purine salvage; Reference proteome;
KW   Transferase.
FT   CHAIN           1..190
FT                   /note="Hypoxanthine/guanine phosphoribosyltransferase"
FT                   /id="PRO_0000415463"
SQ   SEQUENCE   190 AA;  20685 MW;  B8CFAA58C76D23E5 CRC64;
     MFEKLKISLI EAPIIKKGDY NYFVHPITDG VPLVDPDVLK EAAEGIKKFG NLNVDKIVCV
     EAMGIHIATA LSIITGIPFV VIRKRQYGLE GEVAVHQITG YSHGELYING LKKGDKIILV
     DDVVSTGGTM IAVLKAMEKM GIEIVDVFAI VEKGEGKYIV EGETGFEVKS LVKVNVVDGK
     VQIEGSRDEN
//