voltage-gated channel

There seems to be no general pattern of distribution for voltage-gated channels within dendrites.

These nerve cells depend on a set of proteins, called voltage-gated channels, that we know change their behavior at low temperatures.

In order to characterize voltage-gated channels, the equations will be fit to voltage clamp data.

Dendritic spikes can be generated through both sodium and calcium voltage-gated channels.

This causes a voltage spike that, in turn, causes the voltage-gated channels further down the nerve to open up.

Voltage-gated channels are critical to the production of an action potential in neurons resulting in a nerve impulse.

Currents produced by the opening of voltage-gated channels in the course of an action potential are typically significantly larger than the initial stimulating current.

So, the authors predicted that there would be genetic changes in voltage-gated channels in species that are adapted to different temperatures.

The same type of voltage-gated channels may differ in distribution between the soma and dendrite within the same neuron.

This occurs through modulation of membrane components, such as resting and voltage-gated channels and ion pumps.

The negative potential opens potassium voltage-gated channels and so an uptake of potassium ions (K) occurs.

In the case of dendritic spikes, staining and labeling are used to identify and quantify the presence of certain voltage-gated channels.

When an action potential invades a neurosecretory terminal, the terminal is depolarised, and calcium enters the terminal through voltage-gated channels.

Thus, in effect, the NMDAR channel is both a ligand-gated and voltage-gated channel at the same time.

Voltage-gated potassium channels are another set of voltage-gated channels that play a significant role in the initiation of dendritic spikes.

The neurotransmitters bind to receptors on the post-synaptic membrane opening voltage-gated channels causing the membrane to depolarize.

Under the Hodgkin-Huxley formulation, conductances for voltage-gated channels (g(t, V)) are expressed as:

Channels belonging to the largest class, which includes the voltage-gated channels that underlie the nerve impulse, consists of four subunits with six transmembrane helix each.

Potassium voltage-gated channel subfamily H member 1 is a protein that in humans is encoded by the KCNH1 gene.

Before calciseptine was sequenced and shown to be a specific L-type calcium channel inhibitor, no specific polypeptide inhibitors were known for this type of voltage-gated channels.

The most common is the gated channel which requires a trigger, such as a change in membrane potential in voltage-gated channels, to unlock or lock the pore opening.

The genes identified in these two syndromes are the nicotinic acetylcholine receptor alpha-4 subunit and potassium voltage-gated channel subfamily KQT member 2 respectively.

Leak channels account for the natural permeability of the membrane to ions and take the form of the equation for voltage-gated channels, where the conductance is a constant.

One way these changes occur is through modification of voltage-gated channels in the dendrites and axon, which changes the interpretation of excitatory or inhibitory potentials propagated to the cell.

Receptor and voltage-gated channel antagonists are often applied (i.e. nickel used to block NMDA receptors) in order to study the effects of ion channels on dendritic spike initiation.