Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
BSCOP2B SuperfamilyRudiment single hybrid motif 8040374 3001910 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyPreATP-grasp domain 8040377 3001680 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyGlutathione synthetase ATP-binding domain-like 8040379 3000094 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyGlutathione synthetase ATP-binding domain-like 8040379 3000094 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyPreATP-grasp domain 8040377 3001680 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyRudiment single hybrid motif 8040374 3001910 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
BATP-graspe1ez1B1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: ATP-graspF: ATP-graspECOD (1.6)
BPurTe1ez1B2 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: CO dehydrogenase molybdoprotein N-domain-likeF: PurTECOD (1.6)
B2-Hacid_dh_C_2e1ez1B3 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: PreATP-grasp domainF: 2-Hacid_dh_C_2ECOD (1.6)
AATP-graspe1ez1A1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: ATP-graspF: ATP-graspECOD (1.6)
APurTe1ez1A2 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: CO dehydrogenase molybdoprotein N-domain-likeF: PurTECOD (1.6)
A2-Hacid_dh_C_2e1ez1A3 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: PreATP-grasp domainF: 2-Hacid_dh_C_2ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
B3.40.50.20 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold CATH (4.3.0)
B3.30.1490.20 Alpha Beta 2-Layer Sandwich Dna Ligase domain 1CATH (4.3.0)
B3.30.470.20 Alpha Beta 2-Layer Sandwich D-amino Acid Aminotransferase Chain A, domain 1CATH (4.3.0)
A3.40.50.20 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold CATH (4.3.0)
A3.30.1490.20 Alpha Beta 2-Layer Sandwich Dna Ligase domain 1CATH (4.3.0)
A3.30.470.20 Alpha Beta 2-Layer Sandwich D-amino Acid Aminotransferase Chain A, domain 1CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF21244PurT, C-terminal (PurT_C)PurT, C-terminalFormate-dependent phosphoribosylglycinamide formyltransferase (PurT) is involved in de novo purine biosynthesis. PurT belongs to the ATP-grasp superfamily of enzymes and catalyses the transfer of formate to 5-phospho-ribosyl-glycinamide (GAR), produ ...Formate-dependent phosphoribosylglycinamide formyltransferase (PurT) is involved in de novo purine biosynthesis. PurT belongs to the ATP-grasp superfamily of enzymes and catalyses the transfer of formate to 5-phospho-ribosyl-glycinamide (GAR), producing 5-phospho-ribosyl-N-formylglycinamide (FGAR) [1,2]. This entry represents the C-terminal domain which has a rudiment single hybrid motif consisting of a sandwich of half-barrel shaped beta-sheets [2].
Domain
A, B
PF22660Ribonucleotide synthetase preATP-grasp domain (RS_preATP-grasp-like)Ribonucleotide synthetase preATP-grasp domainThis domain precedes the ATP-grasp domain in a number of ribonucleotide synthetases [1-5].Domain
A, B
PF02222ATP-grasp domain (ATP-grasp)ATP-grasp domain- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
PHOSPHORIBOSYLGLYCINAMIDE FORMYLTRANSFERASE 2

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

ChainsEnzyme NameDescriptionCatalytic Residues
Formate-dependent phosphoribosylglycinamide formyltransferase  M-CSA #665

The PurT encoded ribonucleotide transformylase is involved in the step of purine biosynthesis that is specific to bacteria, namely the formylation of GAR (glycinamide ribonucleotide). It displays sequence homology of around 20% to PurK, the enzyme which catalyses the equivalent reaction for the adenine biosynthetic pathway, but uses a different intermediate in the reaction, thus has a slightly different mechanism. Consequently, structural differences between the active sites of the two enzymes exist. However, the similarities are also important as both are members of the ATP grasp superfamily of enzymes that includes biotin carboxylase and sugar kinases amongst others, so analysis of the binding of ATP to this enzyme will give clues as to the overall evolutionary relationship between these enzymes.

Defined by 7 residues: SER:A-160GLY:A-162GLU:A-267GLU:A-279ASP:A-286THR:A-287ARG:A-363
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Explore in 3DM-CSA Motif Definition
EC: 2.1.2 (PDB Primary Data)