Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyPhosphoribosyltransferases (PRTases) 8019843 4000253 SCOP2 (2022-06-29)
ASCOP2 FamilyAlpha subunit of glutamate synthase, GAT domain-like 8024370 4000340 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyPRTase-like 8032223 3000060 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyClass II glutamine amidotransferases 8036749 3000131 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyPRTase-like 8032223 3000060 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyClass II glutamine amidotransferases 8036749 3000131 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AGATase_2_1ste1ecfA1 A: a+b four layersX: Ntn/PP2CH: NtnT: Class II glutamine amidotransferasesF: GATase_2_1stECOD (1.6)
APribosyltrane1ecfA2 A: a/b three-layered sandwichesX: PRTase-like (From Topology)H: PRTase-like (From Topology)T: PRTase-likeF: PribosyltranECOD (1.6)
BGATase_2_1ste1ecfB1 A: a+b four layersX: Ntn/PP2CH: NtnT: Class II glutamine amidotransferasesF: GATase_2_1stECOD (1.6)
BPribosyltrane1ecfB2 A: a/b three-layered sandwichesX: PRTase-like (From Topology)H: PRTase-like (From Topology)T: PRTase-likeF: PribosyltranECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF00156Phosphoribosyl transferase domain (Pribosyltran)Phosphoribosyl transferase domainThis 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
A, B
PF13522Glutamine amidotransferase domain (GATase_6)Glutamine amidotransferase domainThis domain is a class-II glutamine amidotransferase domain found in a variety of enzymes, such as asparagine synthetase and glutamine--fructose-6-phosphate transaminase.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
GLUTAMINE PHOSPHORIBOSYLPYROPHOSPHATE AMIDOTRANSFERASE

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
amidophosphoribosyltransferase  M-CSA #214

Glutamine phosphoribosylpyrophosphate amido transferase (GPATase) catalyses the transfer of the glutamine amide nitrogen to phosphoribosylpyrophosphate to generate phosphoribosylamine, pyrophosphate and glutamate. The enzyme is a member of a family of proteins which utilise the amide nitrogen of glutamate for the biosynthesis of amino acids, nucleotides, amino sugars and coenzymes. The coupling of phosphoribosyl transferase and glutaminase actities in an enzyme is not frequently seen but required for de novo purine synthesis.

Defined by 5 residues: CYS:A-1GLY:A-27ASN:A-101GLY:A-102TYR:A-258
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