Evolutionary history of the ligand-gated ion-channel superfamily of receptors.

Abstract:

:The fast-acting ligand-gated ion channels (LGICs) constitute a group that encompasses nicotinic ACh, 5-HT3, GABAA and glycine receptors. Undoubtedly, they all share a common evolutionary ancestor, and the group can therefore be considered to be a gene superfamily. Because the members of the superfamily are all receptors, it is reasonable to suppose that their common ancestor must also have been some type of receptor, and because the receptors are made of similar subunits, the ancestor was probably homo-oligomeric. Although we failed to find a group of proteins that are related evolutionarily to this superfamily, the analysis of the evolutionary relationships within the superfamily is possible and can give rise to information about the evolution of the structure and function of present-day receptors and indeed of the nervous system itself.

journal_name

Trends Neurosci

journal_title

Trends in neurosciences

authors

Ortells MO,Lunt GG

doi

10.1016/0166-2236(95)93887-4

subject

Has Abstract

pub_date

1995-03-01 00:00:00

pages

121-7

issue

3

eissn

0166-2236

issn

1878-108X

pii

0166-2236(95)93887-4

journal_volume

18

pub_type

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