Annotations: 2BZ1

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2bz1a_	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)
A	SCOP2 Family	RibA-like	8026586	4003211	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	RibA-like	8038965	3000435	SCOP2 (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	PF00925	e2bz1A1	A: a/b three-layered sandwiches	X: RibA-like (From Topology)	H: RibA-like (From Topology)	T: RibA-like	F: PF00925	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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	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	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 guanyl nucleotide binding GTP binding 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 guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide 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	organonitrogen compound metabolic process water-soluble vitamin biosynthetic process small molecule biosynthetic process cellular biosynthetic process flavin-containing compound metabolic process cellular metabolic process organonitrogen compound biosynthetic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process organic cyclic compound metabolic process flavin-containing compound biosynthetic process organic substance metabolic process biosynthetic process organic cyclic compound biosynthetic process organonitrogen compound metabolic process water-soluble vitamin biosynthetic process small molecule biosynthetic process cellular biosynthetic process flavin-containing compound metabolic process cellular metabolic process organonitrogen compound biosynthetic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process organic cyclic compound metabolic process flavin-containing compound biosynthetic process organic substance metabolic process biosynthetic process organic cyclic compound biosynthetic process organic substance biosynthetic process metabolic process small molecule metabolic process cellular process water-soluble vitamin metabolic process riboflavin metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.