Annotations: 4KEP

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Cys_knot	e4kepA1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: Cys_knot	ECOD (v294.1)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.60.15.10	Alpha Beta	4-Layer Sandwich	Metallo-beta-lactamase	Chain A	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	4-pyridoxolactonase	4-pyridoxolactonase activity hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity hydrolase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	vitamin B6 catabolic process catabolic process vitamin catabolic process vitamin metabolic process water-soluble vitamin catabolic process pyridine-containing compound metabolic process vitamin B6 metabolic process metabolic process cellular process small molecule metabolic process small molecule catabolic process pyridine-containing compound catabolic process	-

Chains	Accession	Name	Type
A	IPR036866	Ribonuclease Z/Hydroxyacylglutathione hydrolase-like	Homologous Superfamily
A	IPR001279	Metallo-beta-lactamase	Domain
A	IPR051013	N-acyl homoserine lactonase-like	Family