ID HGPRT_STRA5 Reviewed; 180 AA. AC Q8E2H3; DT 27-SEP-2005, integrated into UniProtKB/Swiss-Prot. DT 01-MAR-2003, sequence version 1. DT 27-MAR-2024, entry version 108. DE RecName: Full=Hypoxanthine-guanine phosphoribosyltransferase; DE Short=HGPRT; DE Short=HGPRTase; DE EC=2.4.2.8 {ECO:0000250|UniProtKB:P9WHQ9}; GN Name=hpt; OrderedLocusNames=SAG0015; OS Streptococcus agalactiae serotype V (strain ATCC BAA-611 / 2603 V/R). OC Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae; OC Streptococcus. OX NCBI_TaxID=208435; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC BAA-611 / 2603 V/R; RX PubMed=12200547; DOI=10.1073/pnas.182380799; RA Tettelin H., Masignani V., Cieslewicz M.J., Eisen J.A., Peterson S.N., RA Wessels M.R., Paulsen I.T., Nelson K.E., Margarit I., Read T.D., RA Madoff L.C., Wolf A.M., Beanan M.J., Brinkac L.M., Daugherty S.C., RA DeBoy R.T., Durkin A.S., Kolonay J.F., Madupu R., Lewis M.R., Radune D., RA Fedorova N.B., Scanlan D., Khouri H.M., Mulligan S., Carty H.A., RA Cline R.T., Van Aken S.E., Gill J., Scarselli M., Mora M., Iacobini E.T., RA Brettoni C., Galli G., Mariani M., Vegni F., Maione D., Rinaudo D., RA Rappuoli R., Telford J.L., Kasper D.L., Grandi G., Fraser C.M.; RT "Complete genome sequence and comparative genomic analysis of an emerging RT human pathogen, serotype V Streptococcus agalactiae."; RL Proc. Natl. Acad. Sci. U.S.A. 99:12391-12396(2002). CC -!- FUNCTION: Purine salvage pathway enzyme that catalyzes the transfer of CC the ribosyl-5-phosphate group from 5-phospho-alpha-D-ribose 1- CC diphosphate (PRPP) to the N9 position of the 6-oxopurines hypoxanthine CC and guanine to form the corresponding ribonucleotides IMP (inosine 5'- CC monophosphate) and GMP (guanosine 5'-monophosphate), with the release CC of PPi. {ECO:0000250|UniProtKB:P9WHQ9}. 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:0000250|UniProtKB:P9WHQ9}; CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:17975; CC Evidence={ECO:0000250|UniProtKB:P9WHQ9}; 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:0000250|UniProtKB:P9WHQ9}; CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:25426; CC Evidence={ECO:0000250|UniProtKB:P9WHQ9}; CC -!- COFACTOR: CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; CC Evidence={ECO:0000250|UniProtKB:P9WHQ9}; CC -!- PATHWAY: Purine metabolism; IMP biosynthesis via salvage pathway; IMP CC from hypoxanthine: step 1/1. {ECO:0000250|UniProtKB:P9WHQ9}. CC -!- PATHWAY: Purine metabolism; GMP biosynthesis via salvage pathway; GMP CC from guanine: step 1/1. {ECO:0000250|UniProtKB:P9WHQ9}. CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}. CC -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase CC family. {ECO:0000305}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AE009948; AAM98923.1; -; Genomic_DNA. DR RefSeq; NP_687051.1; NC_004116.1. DR RefSeq; WP_000892188.1; NC_004116.1. DR AlphaFoldDB; Q8E2H3; -. DR SMR; Q8E2H3; -. DR STRING; 208435.SAG0015; -. DR GeneID; 66884927; -. DR KEGG; sag:SAG0015; -. DR PATRIC; fig|208435.3.peg.14; -. DR HOGENOM; CLU_073615_0_0_9; -. DR OrthoDB; 9802824at2; -. DR UniPathway; UPA00591; UER00648. DR UniPathway; UPA00909; UER00887. DR Proteomes; UP000000821; 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-EC. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW. DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW. DR GO; GO:0032263; P:GMP salvage; IEA:UniProtKB-UniPathway. 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 InterPro; IPR005904; Hxn_phspho_trans. DR InterPro; IPR000836; PRibTrfase_dom. DR InterPro; IPR029057; PRTase-like. DR NCBIfam; TIGR01203; HGPRTase; 1. DR PANTHER; PTHR43340:SF1; HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE; 1. DR PANTHER; PTHR43340; HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE; 1. DR Pfam; PF00156; Pribosyltran; 1. DR SUPFAM; SSF53271; PRTase-like; 1. PE 3: Inferred from homology; KW Cytoplasm; Glycosyltransferase; Magnesium; Metal-binding; KW Nucleotide-binding; Purine salvage; Reference proteome; Transferase. FT CHAIN 1..180 FT /note="Hypoxanthine-guanine phosphoribosyltransferase" FT /id="PRO_0000139621" FT ACT_SITE 103 FT /note="Proton acceptor" FT /evidence="ECO:0000250|UniProtKB:P0A9M2" FT BINDING 43 FT /ligand="diphosphate" FT /ligand_id="ChEBI:CHEBI:33019" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 44 FT /ligand="diphosphate" FT /ligand_id="ChEBI:CHEBI:33019" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 99 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 100 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 131 FT /ligand="GMP" FT /ligand_id="ChEBI:CHEBI:58115" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 152..153 FT /ligand="GMP" FT /ligand_id="ChEBI:CHEBI:58115" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 159 FT /ligand="GMP" FT /ligand_id="ChEBI:CHEBI:58115" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" FT BINDING 165 FT /ligand="diphosphate" FT /ligand_id="ChEBI:CHEBI:33019" FT /evidence="ECO:0000250|UniProtKB:P9WHQ9" SQ SEQUENCE 180 AA; 20383 MW; FFB252189AA33AE3 CRC64; MLENDIKKVL YSEEDIILKT KELGAKLTAD YAGKNPLLVG VLKGSVPFMA ELLKHIDTHV EIDFMVVSSY HGGTTSSGEV KILKDVDTNI EGRDVIFIED IIDTGRTLKY LRDMFKYRQA NSVKVATLFD KPEGRLVDID ADYVCYDIPN EFIVGFGLDY AENYRNLPYV GVLKEEIYSK //