Abstract:
:Glutamate is an indispensable neurotransmitter, triggering postsynaptic signals upon recognition by postsynaptic receptors. We questioned the phylogenetic position and the molecular details of when and where glutamate recognition arose in the glutamate-gated chloride channels. Experiments revealed that glutamate recognition requires an arginine residue in the base of the binding site, which originated at least three distinct times according to phylogenetic analysis. Most remarkably, the arginine emerged on the principal face of the binding site in the Lophotrochozoan lineage, but 65 amino acids upstream, on the complementary face, in the Ecdysozoan lineage. This combined experimental and computational approach throws new light on the evolution of synaptic signalling.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Lynagh T,Beech RN,Lalande MJ,Keller K,Cromer BA,Wolstenholme AJ,Laube Bdoi
10.1038/srep08558subject
Has Abstractpub_date
2015-02-24 00:00:00pages
8558issn
2045-2322pii
srep08558journal_volume
5pub_type
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