Annotations: 2BZ0

Crystal Structure of E. coli GTP cyclohydrolase II in complex with GTP analogue, GMPcPP, and Zinc

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d2bz0b_	Alpha and beta proteins (a/b)	RibA-like	RibA-like	RibA-like	GTP cyclohydrolase II, RibA	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d2bz0a1	Alpha and beta proteins (a/b)	RibA-like	RibA-like	RibA-like	GTP cyclohydrolase II, RibA	(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)
B	SCOP2B Superfamily	RibA-like	8038965	3000435	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	RibA-like	8038965	3000435	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)
B	Chal_sti_synt_N	e2bz0B1	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: Chal_sti_synt_N	ECOD (v295.2)
A	Chal_sti_synt_N	e2bz0A1	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: Chal_sti_synt_N	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.10990	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	GTP cyclohydrolase II	CATH (4.3.0)
A	3.40.50.10990	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	GTP cyclohydrolase II	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00925	GTP cyclohydrolase II (GTP_cyclohydro2)	GTP cyclohydrolase II	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	GTP CYCLOHYDROLASE II	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding identical protein binding protein binding protein homodimerization activity protein dimerization activity transition metal ion binding zinc ion binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines GTP cyclohydrolase II activity cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding identical protein binding protein binding protein homodimerization activity protein dimerization activity transition metal ion binding zinc ion binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines GTP cyclohydrolase II activity GTP cyclohydrolase activity cyclohydrolase activity hydrolase activity catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds	water-soluble vitamin biosynthetic process small molecule biosynthetic process flavin-containing compound metabolic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process flavin-containing compound biosynthetic process biosynthetic process metabolic process cellular process small molecule metabolic process riboflavin metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR032677	GTP cyclohydrolase II	Domain
A, B	IPR000926	GTP cyclohydrolase II, RibA	Family
A, B	IPR036144	GTP cyclohydrolase II superfamily	Homologous Superfamily