[Photophobic response in Stentor coeruleus--electrophysiologic investigations].
It is widely known that the phototransduction process in vertebrate photoreceptor cells are mediated by cGMP-gated ionic channels. The recent electrophysiological study showed that the cGMP-gated channels are also present in light sensitive protozoan ciliate Stentor coeruleus. These channels might play a key role in phototransduction process which leads to the photophobic behavior in the ciliate. The basic biophysical and pharmaceutical properties of cGMP-gated channels in Stentor indicate high similarity to those in vertebrate photoreceptor cells.
Walerczyk
M
M
Zakład Biologii Komórki, Instytut Biologii Doświadczalnej im. M. Nenckiego PAN w Warszawie.
Fabczak
H
H
Fabczak
S
S
D000818:Animals; D016798:Ciliophora / Q000502:physiology*; D006152:Cyclic GMP / Q000378:metabolism; D007473:Ion Channels / Q000378:metabolism; D010786:Photoreceptor Cells / Q000502:physiology*; D015398:Signal Transduction
D007473:Ion Channels; D006152:Cyclic GMP