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Olfactory signalling in vertebrates and insects: differences and commonalities

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Kaupp,  U. B.
Department of Molecular Sensory Systems, Center of Advanced European Studies and Research (caesar), Max Planck Society;

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Citation

Kaupp, U. B. (2010). Olfactory signalling in vertebrates and insects: differences and commonalities. Nature Reviews Neuroscience, 11(3), 188-200.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0028-6203-9
Abstract
Vertebrates and insects have evolved complex repertoires of chemosensory receptors to detect and distinguish odours. With a few exceptions, vertebrate chemosensory receptors belong to the family of G protein-coupled receptors that initiate a cascade of cellular signalling events and thereby electrically excite the neuron. Insect receptors, which are structurally and genetically unrelated to vertebrate receptors, are a complex of two distinct molecules that serves both as a receptor for the odorant and as an ion channel that is gated by binding of the odorant. Metabotropic signalling in vertebrates provides a rich panoply of positive and negative regulation, whereas ionotropic signalling in insects enhances processing speed