Annotations: 2QV6

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104112	3001272	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104111	3001272	SCOP2B (2022-06-29)
B	SCOP2 Family	GTP cyclohydrolase III	8046902	4005358	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104111	3001272	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104112	3001272	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104112	3001272	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104111	3001272	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104111	3001272	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8104112	3001272	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	GCH_III	e2qv6A1	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: GCH_III	ECOD (1.6)
B	GCH_III	e2qv6B2	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: GCH_III	ECOD (1.6)
C	GCH_III	e2qv6C2	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: GCH_III	ECOD (1.6)
D	GCH_III	e2qv6D2	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: GCH_III	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.70.1230	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Nucleotide cyclase, GGDEF domain	CATH (4.3.0)
A	3.30.70.270	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Reverse transcriptase/Diguanylate cyclase domain	CATH (4.3.0)
B	3.30.70.1230	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Nucleotide cyclase, GGDEF domain	CATH (4.3.0)
B	3.30.70.270	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Reverse transcriptase/Diguanylate cyclase domain	CATH (4.3.0)
C	3.30.70.1230	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Nucleotide cyclase, GGDEF domain	CATH (4.3.0)
C	3.30.70.270	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Reverse transcriptase/Diguanylate cyclase domain	CATH (4.3.0)
D	3.30.70.1230	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Nucleotide cyclase, GGDEF domain	CATH (4.3.0)
D	3.30.70.270	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Reverse transcriptase/Diguanylate cyclase domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF05165	GTP cyclohydrolase III (GCH_III)	GTP cyclohydrolase III	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	GTP cyclohydrolase III	binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines GTP cyclohydrolase activity cyclohydrolase activity hydrolase activity catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds GTP cyclohydrolase IIa activity	biosynthetic process metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR007839	GTP cyclohydrolase III	Family
A, B, C, D	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A, B, C, D	IPR029787	Nucleotide cyclase	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.