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The second messenger for visual excitation in invertebrate phototransduction
1Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile. bacigalu@abello.dic.uchile.cl
Biological Research
|January 1, 1996
Abstract:
Invertebrate visual transduction involves a second messenger cascade process that leads to an increase in membrane conductance. The identity of the second messenger that gates the light-dependent channels is presently a major focus of attention. Cyclic GMP, inositol trisphosphate and Ca2+ are the most likely candidates for being such a messenger in the species studied so far. Here we review the available evidence for each of these molecules.