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XB-ART-20670
Nature 1994 Oct 20;3716499:707-11. doi: 10.1038/371707a0.
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Cloning of an avermectin-sensitive glutamate-gated chloride channel from Caenorhabditis elegans.

Cully DF , Vassilatis DK , Liu KK , Paress PS , Van der Ploeg LH , Schaeffer JM , Arena JP .


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The avermectins are a family of macrocyclic lactones used in the control of nematode and arthropod parasites. Ivermectin (22,23-dihydroavermectin B1a) is widely used as an anthelmintic in veterinary medicine and is used to treat onchocerciasis or river blindness in humans. Abamectin (avermectin B1a) is a miticide and insecticide used in crop protection. Avermectins interact with vertebrate and invertebrate GABA receptors and invertebrate glutamate-gated chloride channels. The soil nematode Caenorhabditis elegans has served as a useful model to study the mechanism of action of avermectins. A C. elegans messenger RNA expressed in Xenopus oocytes encodes an avermectin-sensitive glutamate-gated chloride channel. To elucidate the structure and properties of this channel, we used Xenopus oocytes for expression cloning of two functional complementary DNAs encoding an avermectin-sensitive glutamate-gated chloride channel. We find that the electrophysiological and structural properties of these proteins indicate that they are new members of the ligand-gated ion channel superfamily.

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