8FX3

Crystal structure of the Trypanosoma cruzi hypoxanthine-guanine-xanthine phosphoribosyltransferase (HGXPRT), isoform D, bound to Immucillin-GP, showing the structure of the complete active site in its open conformation

External Resource: Annotation

Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00156	Phosphoribosyl transferase domain (Pribosyltran)	Phosphoribosyl transferase domain	This family includes a range of diverse phosphoribosyl transferase enzymes. This family includes: Adenine phosphoribosyl-transferase EC:2.4.2.7, Swiss:P07672. Hypoxanthine-guanine-xanthine phosphoribosyl-transferase Swiss:P51900. Hypoxanthine phosph ...	This family includes a range of diverse phosphoribosyl transferase enzymes. This family includes: Adenine phosphoribosyl-transferase EC:2.4.2.7, Swiss:P07672. Hypoxanthine-guanine-xanthine phosphoribosyl-transferase Swiss:P51900. Hypoxanthine phosphoribosyl-transferase EC:2.4.2.8 Swiss:P36766. Ribose-phosphate pyrophosphokinase i EC:2.7.6.1 Swiss:P09329. Amidophosphoribosyltransferase EC:2.4.2.14 Swiss:P00496. Orotate phosphoribosyl-transferase EC:2.4.2.10 Swiss:P11172. Uracil phosphoribosyl-transferase EC:2.4.2.9 Swiss:P25532. Xanthine-guanine phosphoribosyl-transferase EC:2.4.2.22 Swiss:P00501. In Arabidopsis, At the very N-terminus of this domain is the P-Loop NTPase domain [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Hypoxanthine-guanine phosphoribosyltransferase	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding pentosyltransferase activity hypoxanthine phosphoribosyltransferase activity glycosyltransferase activity purine phosphoribosyltransferase activity transferase activity catalytic activity nucleoside phosphate binding nucleotide binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding pentosyltransferase activity hypoxanthine phosphoribosyltransferase activity glycosyltransferase activity purine phosphoribosyltransferase activity transferase activity catalytic activity nucleoside phosphate binding nucleotide binding heterocyclic compound binding	IMP salvage ribose phosphate metabolic process IMP metabolic process purine ribonucleoside monophosphate biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process nucleobase-containing compound metabolic process nucleotide salvage metabolic compound salvage ribonucleotide biosynthetic process purine nucleoside monophosphate biosynthetic process purine ribonucleoside monophosphate metabolic process purine nucleotide metabolic process ribonucleotide metabolic process IMP salvage ribose phosphate metabolic process IMP metabolic process purine ribonucleoside monophosphate biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process nucleobase-containing compound metabolic process nucleotide salvage metabolic compound salvage ribonucleotide biosynthetic process purine nucleoside monophosphate biosynthetic process purine ribonucleoside monophosphate metabolic process purine nucleotide metabolic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine nucleoside monophosphate metabolic process phosphate-containing compound metabolic process purine nucleotide salvage small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside monophosphate metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process purine-containing compound salvage primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process nucleoside monophosphate biosynthetic process purine-containing compound metabolic process IMP biosynthetic process biosynthetic process purine ribonucleotide salvage organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process purine ribonucleotide metabolic process ribonucleoside monophosphate biosynthetic process purine nucleotide biosynthetic process hypoxanthine metabolic process purine nucleobase metabolic process nucleobase metabolic process GMP metabolic process GMP salvage GMP biosynthetic process guanine metabolic process nucleobase biosynthetic process guanine salvage purine nucleobase biosynthetic process purine nucleobase salvage guanine biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050408	Hypoxanthine-guanine phosphoribosyltransferase	Family
A, B	IPR000836	Phosphoribosyltransferase domain	Domain
A, B	IPR029057	Phosphoribosyltransferase-like	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.