4GV5

X-ray structure of crotamine, a cell-penetrating peptide from the Brazilian snake Crotalus durissus terrificus

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4gv5a_	Small proteins	Defensin-like	Defensin-like	Myotoxin	Crotamine	(Crotalus durissus terrificus ) [TaxId: 8732 ],	SCOPe (2.08)
B	d4gv5b_	Small proteins	Defensin-like	Defensin-like	Myotoxin	Crotamine	(Crotalus durissus terrificus ) [TaxId: 8732 ],	SCOPe (2.08)
C	d4gv5c_	Small proteins	Defensin-like	Defensin-like	Myotoxin	Crotamine	(Crotalus durissus terrificus ) [TaxId: 8732 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Defensin-like	8044508	3000681	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Defensin-like	8044508	3000681	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Defensin-like	8044508	3000681	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	Myotoxins	e4gv5A1	A: few secondary structure elements	X: Defensin-like	H: Defensin-related	T: Defensin-related	F: Myotoxins	ECOD (1.6)
B	Myotoxins	e4gv5B1	A: few secondary structure elements	X: Defensin-like	H: Defensin-related	T: Defensin-related	F: Myotoxins	ECOD (1.6)
C	Myotoxins	e4gv5C1	A: few secondary structure elements	X: Defensin-like	H: Defensin-related	T: Defensin-related	F: Myotoxins	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.20.20.10	Mainly Beta	Single Sheet	Anthopleurin-A	Anthopleurin-A	CATH (4.3.0)
B	2.20.20.10	Mainly Beta	Single Sheet	Anthopleurin-A	Anthopleurin-A	CATH (4.3.0)
C	2.20.20.10	Mainly Beta	Single Sheet	Anthopleurin-A	Anthopleurin-A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF00819	Myotoxin, crotamine (Myotoxins)	Myotoxin, crotamine	Crotamine is a family of cationic peptides expressed by the venom gland of, for example, Crotalus durissus terrificus. It acts as a cell-penetrating peptide (CPP) and as a potent voltage-gated potassium channel (Kv) inhibitor [1-6].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Crotamine Ile-19	potassium channel regulator activity channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity toxin activity	envenomation resulting in modulation of process in another organism biological process involved in interspecies interaction between organisms envenomation resulting in occlusion of the pore of voltage-gated potassium channel in another organism envenomation resulting in modulation of ion channel activity in another organism modulation of process of another organism envenomation resulting in negative regulation of voltage-gated potassium channel activity in another organism envenomation resulting in modulation of voltage-gated potassium channel activity in another organism 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 envenomation resulting in modulation of process in another organism biological process involved in interspecies interaction between organisms envenomation resulting in occlusion of the pore of voltage-gated potassium channel in another organism envenomation resulting in modulation of ion channel activity in another organism modulation of process of another organism envenomation resulting in negative regulation of voltage-gated potassium channel activity in another organism envenomation resulting in modulation of voltage-gated potassium channel activity in another organism 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 defense response to fungus response to fungus cellular process disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR000881	Myotoxin	Family
A, B, C	IPR023355	Myotoxin/Anemone neurotoxin domain superfamily	Homologous Superfamily

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.