Annotations: 3ZFI

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Choline_kinase, EcKL	e3zfiB1	A: a/b three-layered sandwiches	X: PBZ domain	H: PBZ domain	T: PBZ domain	F: Choline_kinase, EcKL	ECOD (v294.1)
A	Choline_kinase, EcKL	e3zfiA1	A: a/b three-layered sandwiches	X: PBZ domain	H: PBZ domain	T: PBZ domain	F: Choline_kinase, EcKL	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.890.40	Mainly Alpha	Orthogonal Bundle	10k-s Protein, Hypothetical Protein A	Chain A	CATH (4.3.0)
A	1.10.890.40	Mainly Alpha	Orthogonal Bundle	10k-s Protein, Hypothetical Protein A	Chain A	CATH (4.3.0)

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR041238	Rap1a immunity protein	Domain

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.