2A9A | pdb_00002a9a

Crystal structure of recombinant chicken sulfite oxidase with the bound product, sulfate, at the active site

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)
A	d2a9aa1	All beta proteins	Immunoglobulin-like beta-sandwich	E set domains	Molybdenum-containing oxidoreductases-like dimerisation domain	Sulfite oxidase, C-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
A	d2a9aa2	Alpha and beta proteins (a+b)	Oxidoreductase molybdopterin-binding domain	Oxidoreductase molybdopterin-binding domain	Oxidoreductase molybdopterin-binding domain	Sulfite oxidase, middle catalytic domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d2a9ab2	All beta proteins	Immunoglobulin-like beta-sandwich	E set domains	Molybdenum-containing oxidoreductases-like dimerisation domain	Sulfite oxidase, C-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d2a9ab1	Alpha and beta proteins (a+b)	Oxidoreductase molybdopterin-binding domain	Oxidoreductase molybdopterin-binding domain	Oxidoreductase molybdopterin-binding domain	Sulfite oxidase, middle catalytic domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Oxidoreductase molybdopterin-binding domain	8024388	4002574	SCOP2 (2022-06-29)
A	SCOP2 Family	Molybdenum-containing oxidoreductases-like dimerisation domain	8055002	4007515	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Oxidoreductase molybdopterin-binding domain	8036767	3001433	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	E set domains	8055003	3000070	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Oxidoreductase molybdopterin-binding domain	8036767	3001433	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	E set domains	8055003	3000070	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		e2a9aA1	A: Cloacin translocation domain	X: Cloacin translocation domain	H: Cloacin translocation domain	T: Copper-bind	F:	ECOD (20:10:01)
A		e2a9aA2	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: DUF3197	F:	ECOD (20:10:01)
B		e2a9aB3	A: DEATH domain	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: TGF_beta	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.420.10	Alpha Beta	Alpha-Beta Complex	Sulfite Oxidase	Chain A, domain 2	CATH (4.3.0)
A	2.60.40.650	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
B	3.90.420.10	Alpha Beta	Alpha-Beta Complex	Sulfite Oxidase	Chain A, domain 2	CATH (4.3.0)
B	2.60.40.650	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00174	Oxidoreductase molybdopterin binding domain (Oxidored_molyb)	Oxidoreductase molybdopterin binding domain	This domain is found in a variety of oxidoreductases. This domain binds to a molybdopterin cofactor. Xanthine dehydrogenases, that also bind molybdopterin, have essentially no similarity.	Domain
A, B	PF03404	Mo-co oxidoreductase dimerisation domain (Mo-co_dimer)	Mo-co oxidoreductase dimerisation domain	This domain is found in molybdopterin cofactor (Mo-co) oxidoreductases. It is involved in dimer formation, and has an Ig-fold structure [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Sulfite Oxidase	binding tetrapyrrole binding heme binding cation binding transition metal ion binding molybdenum ion binding ion binding metal ion binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity sulfite oxidase activity oxidoreductase activity, acting on a sulfur group of donors, oxygen as acceptor catalytic activity binding tetrapyrrole binding heme binding cation binding transition metal ion binding molybdenum ion binding ion binding metal ion binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity sulfite oxidase activity oxidoreductase activity, acting on a sulfur group of donors, oxygen as acceptor catalytic activity molybdopterin cofactor binding	sulfur compound metabolic process metabolic process cellular process	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial intermembrane space membrane-enclosed lumen intracellular organelle lumen organelle envelope lumen organelle envelope organelle lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial intermembrane space membrane-enclosed lumen intracellular organelle lumen organelle envelope lumen organelle envelope organelle lumen mitochondrial envelope

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036400	Cytochrome b5-like heme/steroid binding domain superfamily	Homologous Superfamily
A, B	IPR018506	Cytochrome b5, heme-binding site	Binding Site
A, B	IPR005066	Moybdenum cofactor oxidoreductase, dimerisation	Domain
A, B	IPR008335	Eukaryotic molybdopterin oxidoreductase	Family
A, B	IPR022407	Oxidoreductase, molybdopterin binding site	Binding Site
A, B	IPR036374	Oxidoreductase, molybdopterin-binding domain superfamily	Homologous Superfamily
A, B	IPR000572	Oxidoreductase, molybdopterin-binding domain	Domain
A, B	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A, B	IPR001199	Cytochrome b5-like heme/steroid binding domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.