1PTX | pdb_00001ptx

CRYSTAL STRUCTURE OF TOXIN II FROM THE SCORPION ANDROCTONUS AUSTRALIS HECTOR REFINED AT 1.3 ANGSTROMS RESOLUTION

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	d1ptxa_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Scorpion toxin-like	Long-chain scorpion toxins	Scorpion toxin	Sahara scorpion (Androctonus australis ) [TaxId: 6858 ],	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	8038168	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	e1ptxA1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Scorpion toxin-like	F: Toxin_3	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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	SCORPION TOXIN II	molecular function inhibitor activity sodium channel inhibitor activity channel regulator activity transporter inhibitor activity ion channel regulator activity ion channel inhibitor activity molecular function regulator activity sodium channel regulator activity transporter regulator activity channel inhibitor activity toxin activity	venom-mediated perturbation of transmission of nerve impulse biological process involved in interspecies interaction between organisms venom-mediated perturbation of biological process venom-mediated perturbation of nervous system process modulation of process of another organism venom-mediated increase of sensory perception of pain venom-mediated perturbation of voltage-gated sodium channel activity venom-mediated perturbation of ion channel activity venom-mediated inhibition of voltage-gated sodium channel activity response to stimulus defense response response to stress	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	IPR018218	Scorpion long chain toxin	Family
A	IPR002061	Scorpion long chain toxin/defensin	Family
A	IPR003614	Knottins-like	Domain
A	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.