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. 2004 Feb 15;378(Pt 1):185–191. doi: 10.1042/BJ20031213

Latrophilin is required for toxicity of black widow spider venom in Caenorhabditis elegans.

Christopher J Mee 1, Simon R Tomlinson 1, Pavel V Perestenko 1, David De Pomerai 1, Ian R Duce 1, Peter N R Usherwood 1, David R Bell 1
PMCID: PMC1223931  PMID: 14594448

Abstract

Black widow spider venom (BWSV) kills Caenorhabditis elegans after injection owing to the presence of heat- and detergent-sensitive components, which are high-molecular-mass latrotoxins. A C. elegans homologue of latrophilin/CIRL (calcium-independent receptor for latrotoxin), B0457.1, was identified and shown to have five conserved domains. RNAi (RNA interference) of this gene rendered C. elegans resistant to BWSV, whereas RNAi for CYP37A1 or a neurexin I homologue, and a deletion mutant of the related B0286.2 gene, had no effect on BWSV toxicity. The latrophilin RNAi mutants exhibit changes in defaecation cycle and alterations in drug sensitivity. These results demonstrate that latrophilin mediates the toxicity of BWSV and provide evidence for a physiological function of this receptor.

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Selected References

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