A Photoswitchable Neurotransmitter Analogue Bound to Its Receptor

Biochemistry, 2013, DOI: 10.1021/bi4014402, 52 (50), pp 8972–8974 published on 02.12.2013

Biochemistry, online article

Incorporation of the azobenzene derivative gluazo, a synthetic photochromic ligand, into a kainate receptor allows for the optical control of neuronal activity. The crystal structure of gluazo bound to a dimeric GluK2 ligand-binding domain reveals one monomer in a closed conformation, occupied by gluazo, and the other in an open conformation, with a bound buffer molecule. The glutamate group of gluazo interacts like the natural glutamate ligand, while its trans-azobenzene moiety protrudes into a tunnel. This elongated cavity presumably cannot accommodate a cis-azobenzene, which explains the reversible activation of the receptor upon photoisomerization.  

Campus Movie 2020

CIPSM Movie

Campus Movie 2012

CIPSM Movie
LMUexcellent
TU München
MPG
Helmholtz München
MPI of Neurobiology
MPI of Biochemistry