Variant ionotropic glutamate receptors as chemosensory receptors in Drosophila.

Détails

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_774E182401A9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Variant ionotropic glutamate receptors as chemosensory receptors in Drosophila.
Périodique
Cell
Auteur(s)
Benton R., Vannice K.S., Gomez-Diaz C., Vosshall L.B.
ISSN
1097-4172 ([electronic])
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
136
Numéro
1
Pages
149-162
Langue
anglais
Résumé
Ionotropic glutamate receptors (iGluRs) mediate neuronal communication at synapses throughout vertebrate and invertebrate nervous systems. We have characterized a 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 they 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. Misexpression of IRs in different olfactory neurons is sufficient to confer ectopic odor responsiveness. 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.
Mots-clé
Amino Acid Sequence, Animals, Drosophila/chemistry, Drosophila/metabolism, Molecular Sequence Data, Receptors, Glutamate/chemistry, Receptors, Glutamate/metabolism, Receptors, Odorant/chemistry, Receptors, Odorant/metabolism, Sequence Alignment
Pubmed
Web of science
Open Access
Oui
Création de la notice
26/03/2009 14:25
Dernière modification de la notice
20/08/2019 14:34
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