4KYP | pdb_00004kyp

Beta-Scorpion Toxin folded in the periplasm of E.coli

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	d4kypa_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Scorpion toxin-like	Long-chain scorpion toxins	automated matches	Scorpion (Hottentotta judaicus ) [TaxId: 6863 ],	SCOPe (2.08)
B	d4kypb_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Scorpion toxin-like	Long-chain scorpion toxins	automated matches	Scorpion (Hottentotta judaicus ) [TaxId: 6863 ],	SCOPe (2.08)
C	d4kypc_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Scorpion toxin-like	Long-chain scorpion toxins	automated matches	Scorpion (Hottentotta judaicus ) [TaxId: 6863 ],	SCOPe (2.08)
D	d4kypd_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Scorpion toxin-like	Long-chain scorpion toxins	automated matches	Scorpion (Hottentotta judaicus ) [TaxId: 6863 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Scorpion toxin-like	8038171	3000309	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Scorpion toxin-like	8038171	3000309	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Scorpion toxin-like	8038171	3000309	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Scorpion toxin-like	8038171	3000309	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	Toxin_3_1	e4kypA1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Scorpion toxin-like	F: Toxin_3_1	ECOD (1.6)
B	Toxin_3_1	e4kypB1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Scorpion toxin-like	F: Toxin_3_1	ECOD (1.6)
C	Toxin_3_1	e4kypC1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Scorpion toxin-like	F: Toxin_3_1	ECOD (1.6)
D	Toxin_3_1	e4kypD1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Scorpion toxin-like	F: Toxin_3_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.30.10	Alpha Beta	2-Layer Sandwich	Defensin A-like	Knottin, scorpion toxin-like	CATH (4.3.0)
B	3.30.30.10	Alpha Beta	2-Layer Sandwich	Defensin A-like	Knottin, scorpion toxin-like	CATH (4.3.0)
C	3.30.30.10	Alpha Beta	2-Layer Sandwich	Defensin A-like	Knottin, scorpion toxin-like	CATH (4.3.0)
D	3.30.30.10	Alpha Beta	2-Layer Sandwich	Defensin A-like	Knottin, scorpion toxin-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00537	Scorpion toxin-like domain (Toxin_3)	Scorpion toxin-like domain	This family contains both neurotoxins and plant defensins. The mustard trypsin inhibitor, MTI-2, is plant defensin. It is a potent inhibitor of trypsin with no activity towards chymotrypsin. MTI-2 is toxic for Lepidopteran insects, but has low activ ...	This family contains both neurotoxins and plant defensins. The mustard trypsin inhibitor, MTI-2, is plant defensin. It is a potent inhibitor of trypsin with no activity towards chymotrypsin. MTI-2 is toxic for Lepidopteran insects, but has low activity against aphids [1]. Brazzein is plant defensin-like protein. It is pH-stable, heat-stable and intensely sweet protein [2]. The scorpion toxin (a neurotoxin) binds to sodium channels and inhibits the activation mechanisms of the channels, thereby blocking neuronal transmission. Scorpion toxins bind to sodium channels and inhibit the activation mechanisms of the channels, thereby blocking neuronal transmission	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Beta-insect excitatory toxin Bj-xtrIT	monoatomic cation transmembrane transporter activity channel regulator activity monoatomic ion channel activity sodium channel activity molecular function inhibitor activity passive transmembrane transporter activity transporter inhibitor activity inorganic molecular entity transmembrane transporter activity molecular function regulator activity inorganic cation transmembrane transporter activity sodium channel regulator activity transporter activity channel inhibitor activity ion channel regulator activity monoatomic cation transmembrane transporter activity channel regulator activity monoatomic ion channel activity sodium channel activity molecular function inhibitor activity passive transmembrane transporter activity transporter inhibitor activity inorganic molecular entity transmembrane transporter activity molecular function regulator activity inorganic cation transmembrane transporter activity sodium channel regulator activity transporter activity channel inhibitor activity ion channel regulator activity ion channel inhibitor activity sodium ion transmembrane transporter activity monoatomic cation channel activity sodium channel inhibitor activity channel activity monoatomic ion transmembrane transporter activity transporter regulator activity metal ion transmembrane transporter activity transmembrane transporter activity toxin activity	-	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR036574	Knottin, scorpion toxin-like superfamily	Homologous Superfamily
A, B, C, D	IPR002061	Scorpion long chain toxin/defensin	Family
A, B, C, D	IPR044062	LCN-type cysteine-stabilized alpha/beta (CS-alpha/beta) domain	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 R01GM157729.