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[Light inhibits tyrosine kinase in rod outer segments in vitro]
A M Sholukh1, I D Artamonov, L A Baranova
1Institute of Photobiology, National Academy of Sciences of Belarus, ul. Akademicheskaya 27, Minsk, 220072 Belarus. sholukh@bas07.bas-net.by
Bioorganicheskaia Khimiia
|January 29, 2002
Abstract:
It was shown that short-term (10 min) light exposure of dark-adapted retinal rod outer segments (ROS) leads to a threefold inhibition of the tyrosine kinase activity. Tyrosine kinase activity in the ROS from bleached retinas is by 30% lower than in the dark-adapted ROS. Prolonged illumination (60 min) of the dark-adapted ROS restores the tyrosine kinase activity to the level of ROS from the bleached retinas.