
In contrast to vertebrate phototransduction, invertebrate one remains unclear. This review gives a very brief and bold outline of invertebrate phototransduction, lying stress on the second messenger and light-sensitive channel that mediates the photroreceptor potential. Both IP3/Ca2+ and cGMP are the main candidates for the second messenger. The cGMP would be involved in gating the light-sensitive channels of most of the photoreceptive cells, irrespective of vertebrate and invertebrate, while the IP3/Ca2+ be limited to some of invertebrates.
Invertebrate photoreceptors, Phototransduction, Second messengers, cGMP-IP<SUB>3</SUB>-Ca<SUP>2+</SUP>, Light-sensitive channels
Invertebrate photoreceptors, Phototransduction, Second messengers, cGMP-IP<SUB>3</SUB>-Ca<SUP>2+</SUP>, Light-sensitive channels
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