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Ion channels, cGMP-gated

Structural changes in metarhodopsin It compared to rhodopsin are sensed by a heterotrimeric G protein called trans-ducin. The Ga subunit of transducin activates a cGMP phosphodiesterase that hydrolyzes cGMP to GMP The resulting decrease in cGMP concentrations in the rod cell leads to closure of a cGMP-gated ion channel. This leads to hyperpolarization of the rod cell membrane and initiation of a nerve impulse. [Pg.210]

See other pages where Ion channels, cGMP-gated is mentioned: [Pg.281] [Pg.572] [Pg.457] [Pg.458] [Pg.458] [Pg.1798] [Pg.541] [Pg.572] [Pg.1336] [Pg.1337] [Pg.934] [Pg.934] [Pg.558] [Pg.457] [Pg.458] [Pg.458] [Pg.885] [Pg.530] [Pg.530] [Pg.270] [Pg.864] [Pg.503] [Pg.297]

See also in sourсe #XX -- [ Pg.541 ]

See also in sourсe #XX -- [ Pg.25 , Pg.541 ]

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CGMPs

Gated channels

Gated ion channels

Ion channel gates

Ion gate