3QHB | pdb_00003qhb

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Rubrerythrin	e3qhbA1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: Ferritin/Heme oxygenase	T: Ferritin	F: Rubrerythrin	ECOD (1.6)
B	Rubrerythrin	e3qhbB1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: Ferritin/Heme oxygenase	T: Ferritin	F: Rubrerythrin	ECOD (1.6)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1260.10	Mainly Alpha	Up-down Bundle	Ferritin	Ferritin, core subunit, four-helix bundle	CATH (4.2.0)
B	1.20.1260.10	Mainly Alpha	Up-down Bundle	Ferritin	Ferritin, core subunit, four-helix bundle	CATH (4.2.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Symerythrin	oxidoreductase activity catalytic activity cation binding ferric iron binding transition metal ion binding iron ion binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure plastid cyanelle organelle cytoplasm intracellular membrane-bounded organelle

Chains	Accession	Name	Type
A, B	IPR009040	Ferritin-like diiron domain	Domain
A, B	IPR012347	Ferritin-like	Homologous Superfamily
A, B	IPR009078	Ferritin-like superfamily	Homologous Superfamily
A, B	IPR003251	Rubrerythrin, diiron-binding domain	Domain
A, B	IPR052753	Rubrerythrin-2/Nigerythrin	Family