Electrophysiological in vitro characterization of new rhodopsins of the algae Chlamydomonas reinhardtii


Photoreceptor currents of unicellular algae like Chamydomonas reinhardtii are carried by Ca2+ and H+. Recently we have identified two microbial type rhodopsins that mediate behavioral responses of the alga. In cooperation with G.Nagel (MPI Frankfurt) we have shown that these rhodopsins are light-gated cation channels. These new proteins represent a new photoreceptor family that is important for the understanding of fast algal sensory processes but also has a great potential for application in biotechnology and neuroscience. Within this project we will further characterize light dependence, ion specificity and gating properties of channelrhodopsins expressed in Xenopus oocytes.


Principal Investigators
Hegemann, Peter Prof. Dr. (Details) (Experimental Biophysics)

Duration of Project
Start date: 11/2005
End date: 12/2006

Last updated on 2020-09-03 at 23:11