Annotations: 1C2U

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1c2ua_	Small proteins	Crisp domain-like	Crisp domain-like	Sea anemone toxin k	Sea anemone toxin k	( ) [TaxId: ], (Stichodactyla helianthus ) [TaxId: 6123 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Crisp domain-like	8038869	3000917	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ShK_like	e1c2uA1	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_like	ECOD (1.6)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	SYNTHETIC PEPTIDE ANALOGUE OF SHK TOXIN	monoatomic cation transmembrane transporter activity channel regulator activity ion channel regulator activity monoatomic ion channel activity potassium ion transmembrane transporter activity potassium channel activity potassium channel regulator activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity molecular function regulator activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity monoatomic cation transmembrane transporter activity channel regulator activity ion channel regulator activity monoatomic ion channel activity potassium ion transmembrane transporter activity potassium channel activity potassium channel regulator activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity molecular function regulator activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transporter regulator activity metal ion transmembrane transporter activity transmembrane transporter activity toxin activity	biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to external stimulus response to biotic stimulus defense response to bacterium defense response to other organism response to stress response to bacterium response to external biotic stimulus	cellular anatomical structure extracellular region cell periphery intracellular organelle cell cortex intracellular anatomical structure organelle membraneless organelle nematocyst intracellular membraneless organelle cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR003582	ShKT domain	Domain

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	ABA	Parent Component: ALA RESID: AA0253 , AA0409 PSI-MOD : S-(2-aminovinyl)-3-methyl-D-cysteine MOD:00258 , L-2-aminobutanoic acid (Glu) MOD:00819

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.