Annotations: 7D6X

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Fer4_8	e7d6xB2	A: alpha arrays	X: alpha-helical ferredoxin-like	H: alpha-helical ferredoxin (From Topology)	T: alpha-helical ferredoxin	F: Fer4_8	ECOD (1.6)
B	Fer2_3	e7d6xB1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Fer2_3	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02910	Fumarate reductase flavoprotein C-term (Succ_DH_flav_C)	Fumarate reductase flavoprotein C-term	This family contains fumarate reductases, succinate dehydrogenases and L-aspartate oxidases.	Domain
A	PF00890	FAD binding domain (FAD_binding_2)	FAD binding domain	-	Family
B	PF13183	4Fe-4S dicluster domain (Fer4_8)	4Fe-4S dicluster domain	Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. Domain contai ...	Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. Domain contains two 4Fe4S clusters.	Domain
B	PF13085	2Fe-2S iron-sulfur cluster binding domain (Fer2_3)	2Fe-2S iron-sulfur cluster binding domain	The 2Fe-2S ferredoxin family have a general core structure consisting of beta(2)-alpha-beta(2) which abeta-grasp type fold. The domain is around one hundred amino acids with four conserved cysteine residues to which the 2Fe-2S cluster is ligated.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Succinate dehydrogenase subunit A	steroid dehydrogenase activity oxidoreductase activity steroid dehydrogenase activity, acting on the CH-CH group of donors oxidoreductase activity, acting on the CH-CH group of donors catalytic activity	metabolic process	-
B	Fumarate reductase iron-sulfur subunit	iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding electron transfer activity	aerobic respiration cellular respiration tricarboxylic acid cycle energy derivation by oxidation of organic compounds cellular metabolic process metabolic process cellular process primary metabolic process generation of precursor metabolites and energy	-
C	Succinate dehydrogenase (Membrane anchor subunit)	-	-	membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR030664	FAD-dependent oxidoreductase SdhA/FrdA/AprA	Family
A	IPR015939	Fumarate reductase/succinate dehydrogenase flavoprotein-like, C-terminal	Domain
A	IPR037099	Fumarate reductase/succinate dehydrogenase flavoprotein-like, C-terminal domain superfamily	Homologous Superfamily
A	IPR036188	FAD/NAD(P)-binding domain superfamily	Homologous Superfamily
A	IPR027477	Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain superfamily	Homologous Superfamily
A	IPR003953	FAD-dependent oxidoreductase 2, FAD binding domain	Domain
B	IPR025192	Succinate dehydogenase/fumarate reductase N-terminal	Domain
B	IPR036010	2Fe-2S ferredoxin-like superfamily	Homologous Superfamily
B	IPR001041	2Fe-2S ferredoxin-type iron-sulfur binding domain	Domain
B	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
B	IPR012675	Beta-grasp domain superfamily	Homologous Superfamily
B	IPR006058	2Fe-2S ferredoxin, iron-sulphur binding site	Binding Site
B	IPR004489	Succinate dehydrogenase/fumarate reductase iron-sulphur protein	Family
B	IPR009051	Alpha-helical ferredoxin	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
C	OPM	Transmembrane	Alpha-helical polytopic	Electron transport chain complex II superfamily	Succinate dehydrogenase/fumarate reductase

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
C	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
C	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
C	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Electron Transport Chain Complexes: Complex II	succinate dehydrogenase Sdh1 complex in the apo form

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.