The Q-type calcium channel is a type of

voltage-dependent calcium channel Voltage-gated calcium channels (VGCCs), also known as voltage-dependent calcium channels (VDCCs), are a group of voltage-gated ion channels found in the membrane of excitable cells (''e.g.'', muscle, glial cells, neurons, etc.) with a permeabi ...

. Like the others of this class, the α1 subunit is the one that determines most of the channel's properties. They are poorly understood, but like

R-type calcium channel The R-type calcium channel is a type of voltage-dependent calcium channel. Like the others of this class, the α1 subunit forms the pore through which calcium enters the cell and determines most of the channel's properties. This α1 subunit is al ...

s, they appear to be present in

cerebellar The cerebellum (Latin for "little brain") is a major feature of the hindbrain of all vertebrates. Although usually smaller than the cerebrum, in some animals such as the mormyrid fishes it may be as large as or even larger. In humans, the cerebel ...

granule cells. They have a high threshold of activation and relatively slow kinetics.

External links

* {{Ion channels, g1 Ion channels Electrophysiology Membrane biology Integral membrane proteins Calcium channels