M Ohkuma   F Kawai   E Miyachi   
JOURNAL OF NEURAL TRANSMISSION 109(11) 1365-1371 2002年11月 [査読有り]
Odorants are known to suppress voltage-gated channels not only in olfactory receptor cells but also in neurons of outside of the olfactory system. Here we found that odorants suppress glutamate-gated channels in newt retinal neurons using the Ca2+...
In order to investigate G protein-coupling signal transduction system of ascidians in developmental stages and in embryonic neural system, we have cloned G protein alpha and beta subunit genes and studied their spatial and temporal expression patt...
M Tsuda   M Ohkuma   M Nakagawa   Y Katagiri   
BIOLOGY OF ASCIDIANS 131-136 2001年 [査読有り]
Since ascidians spawn at a fixed latency after sunrise, light must regulate a biological clock for reproduction. The photoreceptor might drives the change in gonadal activity via the gonadotropin-releasing hormone (GnRH) system. Retinal proteins i...
M Ohkuma   Y Katagiri   M Nakagawa   M Tsuda   
NEUROSCIENCE LETTERS 293(1) 5-8 2000年10月 [査読有り]
Since ascidians, a primitive chordate, spawn at a fixed latency after sunrise, light must regulate a biological clock for reproduction in the ascidians. A retinal protein found in the cerebral ganglion of the ascidian is a candidate for the photor...
Retinal proteins in the cerebral ganglion of the ascidian, Halocynthia roretzi, were successfully visualized and their localization was determined by the time-resolved fluorescence difference imaging method. This visualizes retinal proteins in the...