1QO8 | pdb_00001qo8

The structure of the open conformation of a flavocytochrome c3 fumarate reductase

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 [auth D]	d1qo8d1	All alpha proteins	Multiheme cytochromes	Multiheme cytochromes	Di-heme elbow motif	Flavocytochrome c3 (respiratory fumarate reductase), N-terminal domain	(Shewanella frigidimarina ) [TaxId: 56812 ],	SCOPe (2.08)
B [auth D]	d1qo8d2	Alpha and beta proteins (a/b)	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	Succinate dehydrogenase/fumarate reductase flavoprotein N-terminal domain	Flavocytochrome c3 (respiratory fumarate reductase)	(Shewanella frigidimarina ) [TaxId: 56812 ],	SCOPe (2.08)
B [auth D]	d1qo8d3	Alpha and beta proteins (a+b)	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain	Flavocytochrome c3 (respiratory fumarate reductase)	(Shewanella frigidimarina ) [TaxId: 56812 ],	SCOPe (2.08)
A	d1qo8a1	All alpha proteins	Multiheme cytochromes	Multiheme cytochromes	Di-heme elbow motif	Flavocytochrome c3 (respiratory fumarate reductase), N-terminal domain	(Shewanella frigidimarina ) [TaxId: 56812 ],	SCOPe (2.08)
A	d1qo8a2	Alpha and beta proteins (a/b)	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	Succinate dehydrogenase/fumarate reductase flavoprotein N-terminal domain	Flavocytochrome c3 (respiratory fumarate reductase)	(Shewanella frigidimarina ) [TaxId: 56812 ],	SCOPe (2.08)
A	d1qo8a3	Alpha and beta proteins (a+b)	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain	Flavocytochrome c3 (respiratory fumarate reductase)	(Shewanella frigidimarina ) [TaxId: 56812 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth D]	SCOP2 Family	Flavocytochrome c3 flavodomain-like	8100761	4000120	SCOP2 (2022-06-29)
B [auth D]	SCOP2 Family	Fcc3-like	8101101	4000354	SCOP2 (2022-06-29)
B [auth D]	SCOP2 Superfamily	Succinate dehydrogenase/fumarate reductase domain-like	8100762	3000054	SCOP2 (2022-06-29)
B [auth D]	SCOP2 Superfamily	Di-heme elbow motif	8101102	3000145	SCOP2 (2022-06-29)
A	SCOP2B Superfamily	Di-heme elbow motif	8101102	3000145	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Succinate dehydrogenase/fumarate reductase domain-like	8100762	3000054	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 [auth D]	THUMP	e1qo8D4	A: beta barrels	X: Transmembrane heme-binding four-helical bundle	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: THUMP	ECOD (v294.2)
B [auth D]	EPSP_synthase	e1qo8D1	A: beta barrels	X: P-loop domains-like	H: ARM repeat	T: ARM repeat	F: EPSP_synthase	ECOD (v294.2)
B [auth D]	Herpes_glycop_H	e1qo8D3	A: beta barrels	X: gH main domain	H: gH main domain	T: gH main domain	F: Herpes_glycop_H	ECOD (v294.2)
A	Pyr_redox_2	e1qo8A1	A: beta barrels	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Pyr_redox_2	ECOD (v294.2)
A	Herpes_glycop_H	e1qo8A5	A: beta barrels	X: gH main domain	H: gH main domain	T: gH main domain	F: Herpes_glycop_H	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth D]	3.90.700.10	Alpha Beta	Alpha-Beta Complex	Flavocytochrome C3	Chain A, domain 1	CATH (4.3.0)
B [auth D]	1.10.1130.10	Mainly Alpha	Orthogonal Bundle	Flavocytochrome C3	Chain A, domain 2	CATH (4.3.0)
B [auth D]	3.50.50.60	Alpha Beta	3-Layer(bba) Sandwich	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	CATH (4.3.0)
A	3.90.700.10	Alpha Beta	Alpha-Beta Complex	Flavocytochrome C3	Chain A, domain 1	CATH (4.3.0)
A	1.10.1130.10	Mainly Alpha	Orthogonal Bundle	Flavocytochrome C3	Chain A, domain 2	CATH (4.3.0)
A	3.50.50.60	Alpha Beta	3-Layer(bba) Sandwich	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth D]	PF14537	Cytochrome c3 (Cytochrom_c3_2)	Cytochrome c3	-	Family
A, B [auth D]	PF00890	FAD binding domain (FAD_binding_2)	FAD binding domain	This family includes members that bind FAD. This family includes the flavoprotein subunits from succinate and fumarate dehydrogenase, aspartate oxidase and the alpha subunit of adenylylsulphate reductase.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth D]	FLAVOCYTOCHROME C3 FUMARATE REDUCTASE	FMN binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding metal ion binding oxidoreductase activity oxidoreductase activity, acting on the CH-CH group of donors FMN binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding metal ion binding oxidoreductase activity oxidoreductase activity, acting on the CH-CH group of donors catalytic activity	-	cellular anatomical structure extracellular region periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth D]	IPR036280	Multiheme cytochrome superfamily	Homologous Superfamily
A, B [auth D]	IPR003953	FAD-dependent oxidoreductase 2, FAD-binding domain	Domain
A, B [auth D]	IPR012286	Tetraheme cytochrome domain	Domain
A, B [auth D]	IPR050315	FAD-dependent oxidoreductase 2	Family
A, B [auth D]	IPR036188	FAD/NAD(P)-binding domain superfamily	Homologous Superfamily
A, B [auth D]	IPR010960	Flavocytochrome c	Family
A, B [auth D]	IPR027477	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain superfamily	Homologous Superfamily

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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.