ID A0A086ZZA1_9BIFI Unreviewed; 193 AA.
AC A0A086ZZA1;
DT 29-OCT-2014, integrated into UniProtKB/TrEMBL.
DT 29-OCT-2014, sequence version 1.
DT 27-MAR-2024, entry version 41.
DE RecName: Full=Xanthine phosphoribosyltransferase {ECO:0000256|HAMAP-Rule:MF_01184};
DE Short=XPRTase {ECO:0000256|HAMAP-Rule:MF_01184};
DE EC=2.4.2.22 {ECO:0000256|HAMAP-Rule:MF_01184};
GN Name=xpt {ECO:0000256|HAMAP-Rule:MF_01184};
GN ORFNames=BCAL_1777 {ECO:0000313|EMBL:KFI51851.1};
OS Bifidobacterium callitrichos DSM 23973.
OC Bacteria; Actinomycetota; Actinomycetes; Bifidobacteriales;
OC Bifidobacteriaceae; Bifidobacterium.
OX NCBI_TaxID=1437609 {ECO:0000313|EMBL:KFI51851.1, ECO:0000313|Proteomes:UP000029072};
RN [1] {ECO:0000313|EMBL:KFI51851.1, ECO:0000313|Proteomes:UP000029072}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 23973 {ECO:0000313|EMBL:KFI51851.1,
RC ECO:0000313|Proteomes:UP000029072};
RA Ventura M., Milani C., Lugli G.A.;
RT "Genomics of Bifidobacteria.";
RL Submitted (MAR-2014) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|HAMAP-Rule:MF_01184};
CC -!- PATHWAY: Purine metabolism; XMP biosynthesis via salvage pathway; XMP
CC from xanthine: step 1/1. {ECO:0000256|HAMAP-Rule:MF_01184}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01184}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01184}.
CC -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC family. Xpt subfamily. {ECO:0000256|HAMAP-Rule:MF_01184}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KFI51851.1}.
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DR EMBL; JGYS01000019; KFI51851.1; -; Genomic_DNA.
DR RefSeq; WP_043164152.1; NZ_JGYS01000019.1.
DR AlphaFoldDB; A0A086ZZA1; -.
DR STRING; 1437609.BCAL_1777; -.
DR eggNOG; COG0503; Bacteria.
DR OrthoDB; 9790678at2; -.
DR UniPathway; UPA00602; UER00658.
DR Proteomes; UP000029072; Unassembled WGS sequence.
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 NCBIfam; TIGR01744; XPRTase; 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.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01184};
KW Glycosyltransferase {ECO:0000256|HAMAP-Rule:MF_01184,
KW ECO:0000313|EMBL:KFI51851.1};
KW Purine salvage {ECO:0000256|ARBA:ARBA00022726, ECO:0000256|HAMAP-
KW Rule:MF_01184};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01184}.
FT DOMAIN 40..155
FT /note="Phosphoribosyltransferase"
FT /evidence="ECO:0000259|Pfam:PF00156"
FT BINDING 20
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01184"
FT BINDING 27
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01184"
FT BINDING 129..133
FT /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT /ligand_id="ChEBI:CHEBI:58017"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01184"
FT BINDING 157
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01184"
SQ SEQUENCE 193 AA; 20828 MW; 916D59457D01F5AA CRC64;
MKELEERIRK EGTVKPGNVL KVDAFLNHQC DVTLFDHMGA AWAEHFAGRT ITKILTIEAS
GIGIACVAAR HFNGVPVVFA KKAQSINLDG EQYTTTVYSF TKQKEFPVIV AKKYLSAGDH
VLLIDDFLAN GKALHGLIDL CKEAGAVVEG IGIAVEKGFQ GGGDALRAEG YDVDSLAIVE
SMDAETGEIT FRD
//
