XPT_STRPN
ID XPT_STRPN Reviewed; 193 AA.
AC Q97P00;
DT 10-JUN-2008, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2001, sequence version 1.
DT 03-AUG-2022, entry version 122.
DE RecName: Full=Xanthine phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_01184};
DE Short=XPRTase {ECO:0000255|HAMAP-Rule:MF_01184};
DE EC=2.4.2.22 {ECO:0000255|HAMAP-Rule:MF_01184};
GN Name=xpt {ECO:0000255|HAMAP-Rule:MF_01184}; OrderedLocusNames=SP_1847;
OS Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=170187;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=132.1US00S, and 94.1Nd00S;
RX PubMed=16189113; DOI=10.1128/aac.49.10.4315-4326.2005;
RA Stanhope M.J., Walsh S.L., Becker J.A., Italia M.J., Ingraham K.A.,
RA Gwynn M.N., Mathie T., Poupard J.A., Miller L.A., Brown J.R.,
RA Amrine-Madsen H.;
RT "Molecular evolution perspectives on intraspecific lateral DNA transfer of
RT topoisomerase and gyrase loci in Streptococcus pneumoniae, with
RT implications for fluoroquinolone resistance development and spread.";
RL Antimicrob. Agents Chemother. 49:4315-4326(2005).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-334 / TIGR4;
RX PubMed=11463916; DOI=10.1126/science.1061217;
RA Tettelin H., Nelson K.E., Paulsen I.T., Eisen J.A., Read T.D.,
RA Peterson S.N., Heidelberg J.F., DeBoy R.T., Haft D.H., Dodson R.J.,
RA Durkin A.S., Gwinn M.L., Kolonay J.F., Nelson W.C., Peterson J.D.,
RA Umayam L.A., White O., Salzberg S.L., Lewis M.R., Radune D.,
RA Holtzapple E.K., Khouri H.M., Wolf A.M., Utterback T.R., Hansen C.L.,
RA McDonald L.A., Feldblyum T.V., Angiuoli S.V., Dickinson T., Hickey E.K.,
RA Holt I.E., Loftus B.J., Yang F., Smith H.O., Venter J.C., Dougherty B.A.,
RA Morrison D.A., Hollingshead S.K., Fraser C.M.;
RT "Complete genome sequence of a virulent isolate of Streptococcus
RT pneumoniae.";
RL Science 293:498-506(2001).
CC -!- FUNCTION: Converts the preformed base xanthine, a product of nucleic
CC acid breakdown, to xanthosine 5'-monophosphate (XMP), so it can be
CC reused for RNA or DNA synthesis. {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=diphosphate + XMP = 5-phospho-alpha-D-ribose 1-diphosphate +
CC xanthine; Xref=Rhea:RHEA:10800, ChEBI:CHEBI:17712, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:57464, ChEBI:CHEBI:58017; EC=2.4.2.22;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01184};
CC -!- PATHWAY: Purine metabolism; XMP biosynthesis via salvage pathway; XMP
CC from xanthine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC family. Xpt subfamily. {ECO:0000255|HAMAP-Rule:MF_01184}.
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; AE005672; AAK75919.1; -; Genomic_DNA.
DR EMBL; DQ174854; AAZ92655.1; -; Genomic_DNA.
DR EMBL; DQ174892; AAZ92693.1; -; Genomic_DNA.
DR PIR; F95215; F95215.
DR RefSeq; WP_000770419.1; NZ_AKVY01000001.1.
DR AlphaFoldDB; Q97P00; -.
DR SMR; Q97P00; -.
DR STRING; 170187.SP_1847; -.
DR EnsemblBacteria; AAK75919; AAK75919; SP_1847.
DR KEGG; spn:SP_1847; -.
DR eggNOG; COG0503; Bacteria.
DR OMA; HQVDPVL; -.
DR PhylomeDB; Q97P00; -.
DR BioCyc; SPNE170187:G1FZB-1877-MON; -.
DR UniPathway; UPA00602; UER00658.
DR Proteomes; UP000000585; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0000310; F:xanthine phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006166; P:purine ribonucleoside salvage; IEA:UniProtKB-UniRule.
DR GO; GO:0046110; P:xanthine metabolic process; IEA:InterPro.
DR GO; GO:0032265; P:XMP salvage; IEA:UniProtKB-UniPathway.
DR CDD; cd06223; PRTases_typeI; 1.
DR Gene3D; 3.40.50.2020; -; 1.
DR HAMAP; MF_01184; XPRTase; 1.
DR InterPro; IPR000836; PRibTrfase_dom.
DR InterPro; IPR029057; PRTase-like.
DR InterPro; IPR010079; Xanthine_PRibTrfase.
DR Pfam; PF00156; Pribosyltran; 1.
DR SUPFAM; SSF53271; SSF53271; 1.
DR TIGRFAMs; TIGR01744; XPRTase; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Glycosyltransferase; Purine salvage; Transferase.
FT CHAIN 1..193
FT /note="Xanthine phosphoribosyltransferase"
FT /id="PRO_0000339763"
FT BINDING 20
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
FT BINDING 27
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
FT BINDING 128..132
FT /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT /ligand_id="ChEBI:CHEBI:58017"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
FT BINDING 156
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
SQ SEQUENCE 193 AA; 21034 MW; A81BF6CDE5F3C3D5 CRC64;
MKLLEERILK DGHILGDNIL KVDSFLTHQV DFSLMREIGK VFAEKFATTG ITKVVTIEAS
GIAPAVFTAE ALNVPMIFAK KAKNITMNEG ILTAQVYSFT KQVTSTVSIA EKFLSPEDKV
LIIDDFLANG QAAKGLIQII EQAGATVQAI GIVIEKSFQD GRDLLEKAGY PVLSLARLDC
FENGQVVFKE ADL
