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4HHF

Crystal Structure of chemically synthesized scorpion alpha-toxin OD1

Functional Information from GO Data
ChainGOidnamespacecontents
A0005576cellular_componentextracellular region
A0006952biological_processdefense response
A0008200molecular_functionion channel inhibitor activity
A0017080molecular_functionsodium channel regulator activity
A0019871molecular_functionsodium channel inhibitor activity
A0035821biological_processmodulation of process of another organism
A0090729molecular_functiontoxin activity
A0099106molecular_functionion channel regulator activity
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MPD A 101
ChainResidue
ATRP39
AILE40
AGLY41
AGLU55
AMPD102
AHOH221

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE MPD A 102
ChainResidue
ATRP39
AILE40
AMPD101
AMPD103
ATYR6
ALYS29
AASN30

site_idAC3
Number of Residues9
DetailsBINDING SITE FOR RESIDUE MPD A 103
ChainResidue
AILE7
AALA8
AASP9
AASP10
AASP10
ATYR15
AASN30
AVAL56
AMPD102

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues62
DetailsDomain: {"description":"LCN-type CS-alpha/beta","evidences":[{"source":"PROSITE-ProRule","id":"PRU01210","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsMotif: {"description":"Important for toxin selectivity for individual Nav channel subtype (Nav1.6/SCN8A and Nav1.7/SCN9A), but not for toxin potency","evidences":[{"source":"PubMed","id":"23527544","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsSite: {"description":"Important for toxin potency but not for selectivity for individual Nav channel subtype (Nav1.6/SCN8A and Nav1.7/SCN9A)","evidences":[{"source":"PubMed","id":"23527544","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsModified residue: {"description":"Arginine amide","evidences":[{"source":"PubMed","id":"16038905","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

238895

PDB entries from 2025-07-16

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