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1SEG

Crystal structure of a toxin chimera between Lqh-alpha-IT from the scorpion Leiurus quinquestriatus hebraeus and AAH2 from Androctonus australis hector

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
A0044487biological_processvenom-mediated perturbation of transmission of nerve impulse
A0044493biological_processvenom-mediated inhibition of voltage-gated sodium channel activity
A0044742biological_processvenom-mediated increase of sensory perception of pain
A0090729molecular_functiontoxin activity
A0099106molecular_functionion channel regulator activity
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE SO4 A 165
ChainResidue
ATHR13
AASN19
ATYR42
AARG58
ACYS63
AHOH176
AHOH179
AHOH191

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE NO3 A 166
ChainResidue
ALYS62
AHIS64
AHOH197
AGLY61

site_idAC3
Number of Residues5
DetailsBINDING SITE FOR RESIDUE NO3 A 167
ChainResidue
ALYS8
ATHR13
APHE15
AHOH178
AHOH201

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE PPI A 168
ChainResidue
APHE17
AARG18
ATYR21
AHOH246
AHOH271

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
DetailsSite: {"description":"Key residue for Nav1.7/SCN9A site 3","evidences":[{"source":"PubMed","id":"30733386","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsModified residue: {"description":"Histidine amide","evidences":[{"source":"PubMed","id":"15725394","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

243083

PDB entries from 2025-10-15

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