Expression cloning of GABAB receptors uncovers similarity to metabotropic glutamate receptors
Abstract
GABA (γ-amino-butyric acid), the principal inhibitory neurotransmitter in the brain, signals through ionotropic (GABAA/GABAC) and metabotropic (GABAB) receptor systems. Here we report the cloning of GABAB receptors. Photoaffinity labelling experiments suggest that the cloned receptors correspond to two highly conserved GABAB receptor forms present in the vertebrate nervous system. The cloned receptors negatively couple to adenylyl cyclase and show sequence similarity to the metabotropic receptors for the excitatory neurotransmitter L-glutamate.
- Publication:
-
Nature
- Pub Date:
- March 1997
- DOI:
- 10.1038/386239a0
- Bibcode:
- 1997Natur.386..239K