256B | pdb_0000256b

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d256ba_	All alpha proteins	Four-helical up-and-down bundle	Cytochromes	Cytochrome b562	Cytochrome b562	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d256bb_	All alpha proteins	Four-helical up-and-down bundle	Cytochromes	Cytochrome b562	Cytochrome b562	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cytochrome b562	8018754	4000811	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cytochromes	8057879	3001526	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Cytochromes	8057879	3001526	SCOP2B (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Cytochrom_B562	e256bA1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Cytochromes	T: Cytochromes	F: Cytochrom_B562	ECOD (v294.1)
B		e256bB1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: Flavivirus capsid protein C	T: Flavivirus capsid protein C	F:	ECOD (v294.1)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.10	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Cytochrome c/b562	CATH (4.3.0)
B	1.20.120.10	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Cytochrome c/b562	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CYTOCHROME B562	binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	electron transport chain metabolic process cellular process generation of precursor metabolites and energy	cellular anatomical structure periplasmic space

Chains	Accession	Name	Type
A, B	IPR010980	Cytochrome c/b562	Homologous Superfamily
A, B	IPR009155	Cytochrome b562	Family

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.

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