Skip to Navigation
New Beta Site!

Please view this page on our new HGNC beta site and let us know what you think via the feedback form.

Gene Family: Ligand gated ion channels

Also known as : "Ligand-gated ion channels", "LGICs"

Ligand-gated ion channel: Ligand-gated ion channels (LGICs) are a group of transmembrane ion channel proteins which open to allow ions such as Na +, K +, Ca 2+, or Cl - to pass through the membrane in response to the binding of a chemical messenger (i.e. a ligand ), such as a neurotransmitter. These proteins are typically composed of at least two different domains: a transmembrane domain which includes the ion pore, and an extracellular domain which includes the ligand binding location (an allosteric binding site). This modularity has enabled a 'divide and conquer' approach to finding the structure of the proteins (crystallising each domain separately). The function of such receptors located at synapses is to convert the chemical signal of presynaptically released neurotransmitter directly and very quickly into a postsynaptic electrical signal. Many LGICs are additionally modulated by allosteric ligands, by channel blockers, ions, or the membrane potential. LGICs are classified into three superfamilies which lack evolutionary relationship: Cys-loop receptors, Ionotropic glutamate receptors and ATP-gated channels. [Source: Wikipedia]

Family contains the following subsets

Genes contained within subsets