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Transcript
5. Signal transduction
5.1 Control of ion channels
Receptor
Binding
site
Cell
membrane
Five glycoprotein subunits
traversing cell membrane
Messenger
Induced
fit
Cell
membrane
‘Gating’
(ion channel
opens)
Cationic ion channels for K+, Na+, Ca2+ (e.g. nicotinic) = excitatory
Anionic ion channels for Cl- (e.g. GABAA) = inhibitory
©1