Annotations: 2EIX

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2eixa1	All beta proteins	Reductase/isomerase/elongation factor common domain	Riboflavin synthase domain-like	automated matches	automated matches	(Badhamia polycephala ) [TaxId: 5791 ],	SCOPe (2.08)
A	d2eixa2	Alpha and beta proteins (a/b)	Ferredoxin reductase-like, C-terminal NADP-linked domain	Ferredoxin reductase-like, C-terminal NADP-linked domain	automated matches	automated matches	(Badhamia polycephala ) [TaxId: 5791 ],	SCOPe (2.08)
B	d2eixb1	All beta proteins	Reductase/isomerase/elongation factor common domain	Riboflavin synthase domain-like	automated matches	automated matches	(Badhamia polycephala ) [TaxId: 5791 ],	SCOPe (2.08)
B	d2eixb2	Alpha and beta proteins (a/b)	Ferredoxin reductase-like, C-terminal NADP-linked domain	Ferredoxin reductase-like, C-terminal NADP-linked domain	automated matches	automated matches	(Badhamia polycephala ) [TaxId: 5791 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e2eixA1	A: Profilin-like	X: Immunoglobulin-related	H: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	T: SH3_1	F:	ECOD (20:10:01)
A		e2eixA3	A: Subtilisin-like	X: Subtilisin-like	H: Subtilisin-like	T: V-set	F:	ECOD (20:10:01)
B		e2eixB2	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: ACR_tran	F:	ECOD (20:10:01)
B		e2eixB4	A: Subtilisin-like	X: Subtilisin-like	H: Subtilisin-like	T: Peptidase_M49	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
A	3.40.50.80	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module	CATH (4.3.0)
B	2.40.30.10	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
B	3.40.50.80	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	NADH-cytochrome b5 reductase	cytochrome-b5 reductase activity, acting on NADH oxidoreductase activity cytochrome-b5 reductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor catalytic activity binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding	-	membrane-bounded organelle intracellular anatomical structure mitochondrial membrane mitochondrion membrane organelle outer membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope cellular anatomical structure bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane membrane-bounded organelle intracellular anatomical structure mitochondrial membrane mitochondrion membrane organelle outer membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope cellular anatomical structure bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane outer membrane cytoplasm organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR008333	Flavoprotein pyridine nucleotide cytochrome reductase-like, FAD-binding domain	Domain
A, B	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A, B	IPR001709	Flavoprotein pyridine nucleotide cytochrome reductase	Domain
A, B	IPR001433	Oxidoreductase FAD/NAD(P)-binding	Domain
A, B	IPR017927	FAD-binding domain, ferredoxin reductase-type	Domain
A, B	IPR001834	NADH:cytochrome b5 reductase-like	Family
A, B	IPR039261	Ferredoxin-NADP reductase (FNR), nucleotide-binding domain	Homologous Superfamily

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.