1DU9

SOLUTION STRUCTURE OF BMP02, A NATURAL SCORPION TOXIN WHICH BLOCKS APAMIN-SENSITIVE CALCIUM-ACTIVATED POTASSIUM CHANNELS, 25 STRUCTURES

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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	d1du9a_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Scorpion toxin-like	Short-chain scorpion toxins	Bmp02 neurotoxin	(Olivierus martensii ) [TaxId: 34649 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Short-chain scorpion toxins	8025819	4003142	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Scorpion toxin-like	8038198	3000309	SCOP2 (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	Toxin_6	e1du9A1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Scorpion toxin-like	F: Toxin_6	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF05453	BmTXKS1/BmP02 toxin family (Toxin_6)	BmTXKS1/BmP02 toxin family	This family consists of toxin-like peptides that are isolated from the venom of Buthus martensii Karsch scorpion. The precursor consists of 60 amino acid residues, with a putative signal peptide of 28 residues and an extra residue, and a mature pepti ...	This family consists of toxin-like peptides that are isolated from the venom of Buthus martensii Karsch scorpion. The precursor consists of 60 amino acid residues, with a putative signal peptide of 28 residues and an extra residue, and a mature peptide of 31 residues with an amidated C-terminal. The peptides share close homology with other scorpion K+ channel toxins and should present a common three-dimensional fold - the Cysteine -Stabilised alphabeta (CSalphabeta) motif [3]. This family acts by blocking small conductance calcium activated potassium ion channels in their victim [1,2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	BMP02 NEUROTOXIN	molecular function inhibitor activity channel regulator activity transporter inhibitor activity ion channel inhibitor activity ion channel regulator activity molecular function regulator activity transporter regulator activity channel inhibitor activity potassium channel regulator activity toxin activity	-	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036574	Knottin, scorpion toxin-like superfamily	Homologous Superfamily
A	IPR008911	Short scorpion toxin, potassium channel inhibitor alpha-KTx 8/9	Family

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.