Annotations: 4X0J

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ank, Ank_2, Ank_3, Ank_4	e4x0jB1	A: a/b three-layered sandwiches	X: CCHC-type 1 zinc finger	H: Retrovirus zinc finger-related domains	T: Retrovirus zinc finger-related domains	F: Ank, Ank_2, Ank_3, Ank_4	ECOD (v294.1)
A	Ank, Ank_2, Ank_3, Ank_4	e4x0jA1	A: a/b three-layered sandwiches	X: CCHC-type 1 zinc finger	H: Retrovirus zinc finger-related domains	T: Retrovirus zinc finger-related domains	F: Ank, Ank_2, Ank_3, Ank_4	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.1260.80	Mainly Alpha	Up-down Bundle	Ferritin		CATH (4.3.0)
A	1.20.1260.80	Mainly Alpha	Up-down Bundle	Ferritin		CATH (4.3.0)

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR049462	Haptoglobin-hemoglobin receptor	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.