1FBX
CRYSTAL STRUCTURE OF ZINC-CONTAINING E.COLI GTP CYCLOHYDROLASE I
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 | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
B | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
C | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
D | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
E | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
F | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
G | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
H | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
I | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
K | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
L | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
M | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
N | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
O | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | SCOP2B (2022-06-29) |
J | SCOP2B Superfamily | Tetrahydrobiopterin biosynthesis enzymes-like | 8035783 | 3000283 | 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 | GTP_cyclohydroI | e1fbxA1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
B | GTP_cyclohydroI | e1fbxB1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
C | GTP_cyclohydroI | e1fbxC1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
D | GTP_cyclohydroI | e1fbxD1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
E | GTP_cyclohydroI | e1fbxE1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
F | GTP_cyclohydroI | e1fbxF1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
G | GTP_cyclohydroI | e1fbxG1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
H | GTP_cyclohydroI | e1fbxH1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
I | GTP_cyclohydroI | e1fbxI1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
K | GTP_cyclohydroI | e1fbxK1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
L | GTP_cyclohydroI | e1fbxL1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
M | GTP_cyclohydroI | e1fbxM1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
N | GTP_cyclohydroI | e1fbxN1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
O | GTP_cyclohydroI | e1fbxO1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
J | GTP_cyclohydroI | e1fbxJ1 | A: a+b two layers | X: T-fold | H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology) | T: Tetrahydrobiopterin biosynthesis enzymes-like | F: GTP_cyclohydroI | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Protein Family Annotation Pfam Database Homepage
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR020602 | GTP cyclohydrolase I domain | Domain | |
IPR043133 | GTP cyclohydrolase I, C-terminal/NADPH-dependent 7-cyano-7-deazaguanine reductase | Homologous Superfamily | |
IPR043134 | GTP cyclohydrolase I, N-terminal domain | Homologous Superfamily | |
IPR018234 | GTP cyclohydrolase I, conserved site | Conserved Site | |
IPR001474 | GTP cyclohydrolase I | Family |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
GTP cyclohydrolase I M-CSA #38 | GTP cyclohydrolase I catalyses the complex reaction which converts GTP to dihydroneopterin triphosphate. This is the first step of a pathway, which in plants and micro-organisms leads to tetrahydrofolate production, and in animals leads to tetrahydrobiopterin production. Tetrahydrobiopterin is biologically important as it serves as a cofactor in the production of catecholamines and nitric oxide. Genetic defects in GTP cyclohydrolase can therefore lead to severe neurological disorders. Enzymes involved in the formation of tetrahydrofolate are also important anti-infection drug targets. | Defined by 7 residues: CYS:A-110GLU:A-111HIS:A-112HIS:A-113GLN:A-151HIS:A-179CYS:A-181 | EC: 3.5.4.16 (PDB Primary Data) |