Variant ionotropic glutamate receptors as chemosensory receptors in Drosophila.
Variant ionotropic glutamate receptors as chemosensory receptors in Drosophila.
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DOI:
10.1016/j.cell.2008.12.001
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发表时间:
2009-01-09
期刊:
影响因子:
64.5
通讯作者:
Vosshall LB
中科院分区:
文献类型:
--
作者:
Benton R;Vannice KS;Gomez-Diaz C;Vosshall LB
Ionotropic glutamate receptors (iGluRs) mediate neuronal communication at synapses throughout vertebrate and invertebrate nervous systems. We have characterized a novel family of iGluR-related genes in Drosophila, which we name Ionotropic Receptors (IRs). These receptors do not belong to the well-described Kainate, AMPA, or NMDA classes of iGluRs, and have divergent ligand-binding domains that lack their characteristic glutamate-interacting residues. IRs are expressed in a combinatorial fashion in sensory neurons that respond to many distinct odors but do not express either insect odorant receptors (ORs) or gustatory receptors (GRs). IR proteins accumulate in sensory dendrites and not at synapses. Mis-expression of IRs induces novel odor responses in ectopic neurons. Together, these results lead us to propose that the IRs comprise a novel family of chemosensory receptors. Conservation of IR/iGluR-related proteins in bacteria, plants, and animals suggests that this receptor family represents an evolutionarily ancient mechanism for sensing both internal and external chemical cues.
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影响因子:
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通讯作者:
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通讯作者:
Vosshall, Leslie B.