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The Structure and Function of Ionotropic Receptors in Drosophila

Authors
  • Ni, Lina
Type
Published Article
Journal
Frontiers in Molecular Neuroscience
Publisher
Frontiers Media SA
Publication Date
Feb 01, 2021
Volume
13
Identifiers
DOI: 10.3389/fnmol.2020.638839
PMID: 33597847
PMCID: PMC7882480
Source
PubMed Central
Keywords
License
Unknown

Abstract

Ionotropic receptors (IRs) are a highly divergent subfamily of ionotropic glutamate receptors (iGluR) and are conserved across Protostomia, a major branch of the animal kingdom that encompasses both Ecdysozoa and Lophothrochozoa. They are broadly expressed in peripheral sensory systems, concentrated in sensory dendrites, and function in chemosensation, thermosensation, and hygrosensation. As iGluRs, four IR subunits form a functional ion channel to detect environmental stimuli. Most IR receptors comprise individual stimulus-specific tuning receptors and one or two broadly expressed coreceptors. This review summarizes the discoveries of the structure of IR complexes and the expression and function of each IR, as well as discusses the future direction for IR studies.

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