Annotations: 1GTP

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1gtpa_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1gtpb_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d1gtpc_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d1gtpd_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E	d1gtpe_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
F	d1gtpf_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
G	d1gtpg_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
H	d1gtph_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
I	d1gtpi_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
J	d1gtpj_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
K	d1gtpk_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
L	d1gtpl_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
M	d1gtpm_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
N	d1gtpn_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
O	d1gtpo_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
P	d1gtpp_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
Q	d1gtpq_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
R	d1gtpr_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
S	d1gtps_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
T	d1gtpt_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	GTP cyclohydrolase I	GTP cyclohydrolase I	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

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)
J	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)
P	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035783	3000283	SCOP2B (2022-06-29)
Q	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035783	3000283	SCOP2B (2022-06-29)
R	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035783	3000283	SCOP2B (2022-06-29)
S	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035783	3000283	SCOP2B (2022-06-29)
T	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	e1gtpA1	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	e1gtpB1	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	e1gtpC1	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	e1gtpD1	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	e1gtpE1	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	e1gtpF1	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	e1gtpG1	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	e1gtpH1	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	e1gtpI1	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	e1gtpJ1	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	e1gtpK1	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	e1gtpL1	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	e1gtpM1	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	e1gtpN1	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	e1gtpO1	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)
P	GTP_cyclohydroI	e1gtpP1	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)
Q	GTP_cyclohydroI	e1gtpQ1	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)
R	GTP_cyclohydroI	e1gtpR1	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)
S	GTP_cyclohydroI	e1gtpS1	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)
T	GTP_cyclohydroI	e1gtpT1	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

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
A	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
B	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
B	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
C	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
C	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
D	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
D	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
E	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
E	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
F	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
F	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
G	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
G	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
H	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
H	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
I	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
I	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
J	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
J	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
K	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
K	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
L	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
L	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
M	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
M	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
N	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
N	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
O	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
O	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
P	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
P	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
Q	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
Q	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
R	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
R	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
S	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
S	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
T	1.10.286.10	Mainly Alpha	Orthogonal Bundle	GTP Cyclohydrolase I	Chain A, domain 1	CATH (4.3.0)
T	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	PF01227	GTP cyclohydrolase I (GTP_cyclohydroI)	GTP cyclohydrolase I	This family includes GTP cyclohydrolase enzymes and a family of related bacterial proteins including Swiss:Q46920.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	GTP CYCLOHYDROLASE I	hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines GTP cyclohydrolase activity cyclohydrolase activity hydrolase activity GTP cyclohydrolase I activity catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines GTP cyclohydrolase activity cyclohydrolase activity hydrolase activity GTP cyclohydrolase I activity catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding identical protein binding protein binding	carbohydrate derivative biosynthetic process glycosyl compound metabolic process glycosyl compound biosynthetic process small molecule biosynthetic process carbohydrate derivative metabolic process primary metabolic process ribonucleoside biosynthetic process nucleoside biosynthetic process nucleobase-containing compound biosynthetic process queuosine metabolic process nucleoside metabolic process nucleobase-containing small molecule biosynthetic process nucleobase-containing compound metabolic process queuosine biosynthetic process biosynthetic process carbohydrate derivative biosynthetic process glycosyl compound metabolic process glycosyl compound biosynthetic process small molecule biosynthetic process carbohydrate derivative metabolic process primary metabolic process ribonucleoside biosynthetic process nucleoside biosynthetic process nucleobase-containing compound biosynthetic process queuosine metabolic process nucleoside metabolic process nucleobase-containing small molecule biosynthetic process nucleobase-containing compound metabolic process queuosine biosynthetic process biosynthetic process nucleobase-containing small molecule metabolic process small molecule metabolic process metabolic process cellular process ribonucleoside metabolic process one-carbon metabolic process polyol metabolic process alcohol metabolic process diol biosynthetic process diol metabolic process tetrahydrobiopterin biosynthetic process tetrahydrobiopterin metabolic process pteridine-containing compound biosynthetic process polyol biosynthetic process alcohol biosynthetic process pteridine-containing compound metabolic process folic acid-containing compound biosynthetic process modified amino acid biosynthetic process modified amino acid metabolic process folic acid-containing compound metabolic process tetrahydrofolate biosynthetic process tetrahydrofolate metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	IPR020602	GTP cyclohydrolase I domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	IPR043133	GTP cyclohydrolase I, C-terminal/NADPH-dependent 7-cyano-7-deazaguanine reductase	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	IPR043134	GTP cyclohydrolase I, N-terminal domain	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	IPR018234	GTP cyclohydrolase I, conserved site	Conserved Site
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T	IPR001474	GTP cyclohydrolase I	Family