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Gated ion channel

Gated ion channel

(Science: physiology) transmembrane proteins of excitable cells, that allow a flux of ions to pass only under defined circumstances. Channels may be either voltage gated, such as the sodium channel of neurons or ligand gated such as the acetylcholine receptor of cholinergic synapses. Channels tend to be relatively ion specific and allow fluxes of typically 1000 ions to pass in around 1ms, they are thus much faster at moving ions across a membrane than transport atpases.


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Na/K ATP-ase Reversal

I am not sure with your question but I tried to tell this, maybe can explain you ... be found inside the cell. Both Na+ and K+ have channel, which is voltage-gated. When there is an adequate stimulus, Na+ channel will ...

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by Dr.Stein
Wed Feb 21, 2007 7:26 am
 
Forum: Cell Biology
Topic: Na/K ATP-ase Reversal
Replies: 5
Views: 4290

Nerve Impulses

... compressed. These nerves respond to compression. Voltage gated ion channels, located on the axon, open up. Sodium ions (positively charged) ...

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by Khaiy
Fri Apr 21, 2006 6:44 pm
 
Forum: General Discussion
Topic: Nerve Impulses
Replies: 2
Views: 2333

Pharmacology help

can anyone describe the structure of the ion channel gated by the neurotransmitter, -amino-butyric acid (GABA)?

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by daniellestone
Mon Mar 06, 2006 5:01 pm
 
Forum: Cell Biology
Topic: Pharmacology help
Replies: 2
Views: 2390


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