2K72

Solution NMR structure of toxin-like potassium channel blocking domain in MMP23

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ShK	e2k72A1	A: few secondary structure elements	X: Sea anemone toxin k-like	H: Sea anemone toxin k-related (From Topology)	T: Sea anemone toxin k-related	F: ShK	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00413	Matrixin (Peptidase_M10)	Matrixin	The members of this family are enzymes that cleave peptides. These proteases require zinc for catalysis.	Domain
A	PF01549	ShK domain-like (ShK)	ShK domain-like	This domain of is found in several C. elegans proteins. The domain is 30 amino acids long and rich in cysteine residues. There are 6 conserved cysteine positions in the domain that form three disulphide bridges. The domain is found in the potassium ...	This domain of is found in several C. elegans proteins. The domain is 30 amino acids long and rich in cysteine residues. There are 6 conserved cysteine positions in the domain that form three disulphide bridges. The domain is found in the potassium channel inhibitor ShK in sea anemone [1][2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Matrix metalloproteinase-23	peptidase activity catalytic activity, acting on a protein metalloendopeptidase activity hydrolase activity metallopeptidase activity catalytic activity endopeptidase activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding	collagen catabolic process catabolic process metabolic process collagen metabolic process cellular component organization extracellular matrix organization cellular process cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization organic substance metabolic process organonitrogen compound metabolic process proteolysis primary metabolic process collagen catabolic process catabolic process metabolic process collagen metabolic process cellular component organization extracellular matrix organization cellular process cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization organic substance metabolic process organonitrogen compound metabolic process proteolysis primary metabolic process protein metabolic process macromolecule metabolic process	cell periphery extracellular matrix external encapsulating structure cellular anatomical entity extracellular region extracellular space membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle cell periphery extracellular matrix external encapsulating structure cellular anatomical entity extracellular region extracellular space membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR021190	Peptidase M10A	Family
A	IPR003582	ShKT domain	Domain
A	IPR006026	Peptidase, metallopeptidase	Domain
A	IPR024079	Metallopeptidase, catalytic domain superfamily	Homologous Superfamily
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR033739	Peptidase M10A, catalytic domain	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR001818	Peptidase M10, metallopeptidase	Domain
A	IPR007110	Immunoglobulin-like domain	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Monotopic/peripheral	All alpha monotopic/peripheral	Sea anemone toxin-like proteins	ShKT domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.