[PDF][PDF] Rapid, light-induced changes of retinal cyclic GMP levels

C Goridis, N Virmaux, HL Cailla, MA Delaage - FEBS Lett, 1974 - core.ac.uk
C Goridis, N Virmaux, HL Cailla, MA Delaage
FEBS Lett, 1974core.ac.uk
Extremely high activities of guanylate cyclase [l] and guanosine cyclic 3', 5'monophosphate
(cGMP) phosphodiesterase [2], the enzymes of cGMP formation and degradation have been
found in purified rod outer segments of vertebrate retina. Moreover, it has been shown that
the activities of retinal cGMP phosphodiesterase increased considerably after illumination [3-
51 or addition of bleached rhodopsin preparations [3, 4]. Similary, a light-dependent
inhibition of rod outer segment guanylate cyclase activity has been reported
Extremely high activities of guanylate cyclase [l] and guanosine cyclic 3’, 5’monophosphate (cGMP) phosphodiesterase [2], the enzymes of cGMP formation and degradation have been found in purified rod outer segments of vertebrate retina. Moreover, it has been shown that the activities of retinal cGMP phosphodiesterase increased considerably after illumination [3-51 or addition of bleached rhodopsin preparations [3, 4]. Similary, a light-dependent inhibition of rod outer segment guanylate cyclase activity has been reported
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