Annotations: 2X3B

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PF14521	e2x3bB2	A: mixed a+b and a/b	X: Zincin-like	H: Metalloproteases (zincins) catalytic domain (From Topology)	T: Metalloproteases (zincins) catalytic domain	F: PF14521	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.2970	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
A	3.40.390.10	Alpha Beta	3-Layer(aba) Sandwich	Collagenase (Catalytic Domain)	Collagenase (Catalytic Domain)	CATH (4.3.0)
B	2.60.40.2970	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
B	3.40.390.10	Alpha Beta	3-Layer(aba) Sandwich	Collagenase (Catalytic Domain)	Collagenase (Catalytic Domain)	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF14521	Lysine-specific metallo-endopeptidase (Aspzincin_M35)	Lysine-specific metallo-endopeptidase	This is the catalytic region of aspzincins, a group of lysine-specific metallo-endopeptidases in the MEROPS:M35 family. They exhibit the following active-site architecture. The active site is composed of two helices and a loop region and includes the ...	This is the catalytic region of aspzincins, a group of lysine-specific metallo-endopeptidases in the MEROPS:M35 family. They exhibit the following active-site architecture. The active site is composed of two helices and a loop region and includes the HExxH and GTxDxxYG motifs. In UniProt:P81054, His117, His121 and Asp130 coordinate to the catalytic zinc ligands. An electrostatically negative region composed of Asp154 and Glu157 attracts a positively charged Lys side chain of a substrate in a specific manner [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	TOXIC EXTRACELLULAR ENDOPEPTIDASE	cation binding ion binding binding metal ion binding small molecule binding peptidase activity catalytic activity, acting on a protein metalloendopeptidase activity hydrolase activity metallopeptidase activity catalytic activity endopeptidase activity	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR024079	Metallopeptidase, catalytic domain superfamily	Homologous Superfamily
A, B	IPR034115	Peptidyl-Lys metallopeptidase catalytic domain	Domain
A, B	IPR029463	Lysine-specific metallo-endopeptidase	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 R01GM133198.