The distribution in chicken retina of the a subunit of transducin, the guanine nucleotide-binding protein that couples light-dependent activation of rhodopsin with activation of guanosine 3′,5′-monophosphate phosphodiesterase, was determined with the aid of a specific antiscrum. α-Transducin was found in rod photoreceptor cells but was not detected in cones. These results show that rods and cones differ with respect to α-transducin content and suggest that the processes of phototransduction may differ correspondingly in rods and cones.
|Original language||English (US)|
|Number of pages||4|
|State||Published - Jan 1 1986|
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