1QPR
QUINOLINATE PHOSPHORIBOSYLTRANSFERASE (QAPRTASE) FROM MYCOBACTERIUM TUBERCULOSIS IN COMPLEX WITH PHTHALATE AND PRPCP
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
A | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase N-terminal domain-like | 8035013 | 3000867 | SCOP2B (2022-06-29) |
A | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase C-terminal domain-like | 8043826 | 3000603 | SCOP2B (2022-06-29) |
B | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase C-terminal domain-like | 8043826 | 3000603 | SCOP2B (2022-06-29) |
B | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase N-terminal domain-like | 8035013 | 3000867 | SCOP2B (2022-06-29) |
C | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase N-terminal domain-like | 8035013 | 3000867 | SCOP2B (2022-06-29) |
C | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase C-terminal domain-like | 8043826 | 3000603 | SCOP2B (2022-06-29) |
D | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase C-terminal domain-like | 8043826 | 3000603 | SCOP2B (2022-06-29) |
D | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase N-terminal domain-like | 8035013 | 3000867 | SCOP2B (2022-06-29) |
E | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase N-terminal domain-like | 8035013 | 3000867 | SCOP2B (2022-06-29) |
E | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase C-terminal domain-like | 8043826 | 3000603 | SCOP2B (2022-06-29) |
F | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase N-terminal domain-like | 8035013 | 3000867 | SCOP2B (2022-06-29) |
F | SCOP2B Superfamily | Nicotinate/Quinolinate PRTase C-terminal domain-like | 8043826 | 3000603 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | QRPTase_N | e1qprA1 | A: a+b complex topology | X: alpha/beta-Hammerhead/Barrel-sandwich hybrid | H: alpha/beta-Hammerhead/Barrel-sandwich hybrid | T: Nicotinate/Quinolinate PRTase N-terminal domain-like | F: QRPTase_N | ECOD (1.6) |
A | QRPTase_C | e1qprA2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: QRPTase_C | ECOD (1.6) |
B | QRPTase_N | e1qprB1 | A: a+b complex topology | X: alpha/beta-Hammerhead/Barrel-sandwich hybrid | H: alpha/beta-Hammerhead/Barrel-sandwich hybrid | T: Nicotinate/Quinolinate PRTase N-terminal domain-like | F: QRPTase_N | ECOD (1.6) |
B | QRPTase_C | e1qprB2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: QRPTase_C | ECOD (1.6) |
C | QRPTase_N | e1qprC1 | A: a+b complex topology | X: alpha/beta-Hammerhead/Barrel-sandwich hybrid | H: alpha/beta-Hammerhead/Barrel-sandwich hybrid | T: Nicotinate/Quinolinate PRTase N-terminal domain-like | F: QRPTase_N | ECOD (1.6) |
C | QRPTase_C | e1qprC2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: QRPTase_C | ECOD (1.6) |
D | QRPTase_N | e1qprD1 | A: a+b complex topology | X: alpha/beta-Hammerhead/Barrel-sandwich hybrid | H: alpha/beta-Hammerhead/Barrel-sandwich hybrid | T: Nicotinate/Quinolinate PRTase N-terminal domain-like | F: QRPTase_N | ECOD (1.6) |
D | QRPTase_C | e1qprD2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: QRPTase_C | ECOD (1.6) |
E | QRPTase_N | e1qprE1 | A: a+b complex topology | X: alpha/beta-Hammerhead/Barrel-sandwich hybrid | H: alpha/beta-Hammerhead/Barrel-sandwich hybrid | T: Nicotinate/Quinolinate PRTase N-terminal domain-like | F: QRPTase_N | ECOD (1.6) |
E | QRPTase_C | e1qprE2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: QRPTase_C | ECOD (1.6) |
F | QRPTase_N | e1qprF1 | A: a+b complex topology | X: alpha/beta-Hammerhead/Barrel-sandwich hybrid | H: alpha/beta-Hammerhead/Barrel-sandwich hybrid | T: Nicotinate/Quinolinate PRTase N-terminal domain-like | F: QRPTase_N | ECOD (1.6) |
F | QRPTase_C | e1qprF2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: QRPTase_C | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF02749 | Quinolinate phosphoribosyl transferase, N-terminal domain (QRPTase_N) | Quinolinate phosphoribosyl transferase, N-terminal domain | Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC:2.4.2.19 is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl ... | Domain | |
PF01729 | Quinolinate phosphoribosyl transferase, C-terminal domain (QRPTase_C) | Quinolinate phosphoribosyl transferase, C-terminal domain | Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC:2.4.2.19 is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl ... | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR022412 | Quinolinate phosphoribosyl transferase, N-terminal | Domain | |
IPR037128 | Quinolinate phosphoribosyl transferase, N-terminal domain superfamily | Homologous Superfamily | |
IPR013785 | Aldolase-type TIM barrel | Homologous Superfamily | |
IPR004393 | Nicotinate-nucleotide pyrophosphorylase | Family | |
IPR002638 | Quinolinate phosphoribosyl transferase, C-terminal | Domain | |
IPR027277 | Nicotinate-nucleotide pyrophosphorylase/Putative pyrophosphorylase ModD | Family | |
IPR036068 | Nicotinate phosphoribosyltransferase-like, C-terminal | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
nicotinate-nucleotide diphosphorylase (carboxylating) (type II) M-CSA #8 | Quinolinic acid phosphoribosyltransferase from Mycobacterium Tuberculosis (Mt-QAPRTase) is required for the de novo biosynthesis of NAD in both prokaryotes and eukaryotes (equivalent enzyme). The enzyme catalyses the reaction between quinolinic acid (QA) and 5-phosphoribosyl-1-pyrophosphate (PRPP), to yield nicotinic acid mononucleotide (NAMN), pyrophosphate and CO2, the latter resulting from decarboxylation at position 2 of the quinolinate ring. QAPRTase has been grouped with other phosphoribosyltransferases, (PRTases) that catalyse chemically similar phosphoribosyl transfer reactions using the substrate PRPP. The PRTases are involved in de novo and salvage reactions of nucleotide synthesis, as well as in histidine and tryptophan biosynthesis [PMID:9016724]. To date, crystal structures have been determined for several PRTase enzymes and all show a common 'PRTase fold' (the 'type I' fold) composed of a central beta sheet, of five beta strands, surrounded by alpha helices. The fold contains a common recognition motif of thirteen residues which is critical for PRPP binding and catalysis. However, as type II enzymes like Mt-QAPRTase lack the type I PRPP-binding motif and have TIM barrel-like structure, it becomes possible that there might be at least two different types of PRTase fold [PMID:9016724]. Despite their structural differences, it has been suggested TI and TII indeed still have the same catalytic mechanism but more work is needed to understand this fully. | Defined by 5 residues: LYS:A-139 [auth A-140]LYS:A-171 [auth A-172]GLU:A-200 [auth A-201]ASP:A-221 [auth A-222]ARG:B-104 [auth B-105] | EC: 2.4.2.19 (PDB Primary Data) |