Functions of Presynaptic Voltage-gated Calcium Channels.
Functions of Presynaptic Voltage-gated Calcium Channels.
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突触前电压门控钙通道的功能。
DOI:
10.1093/function/zqaa027
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Dolphin AC
中科院分区:
文献类型:
--
作者:
Dolphin AC
Voltage-gated calcium channels are the principal conduits for depolarization-mediated Ca2+ entry into excitable cells. In this review, the biophysical properties of the relevant members of this family of channels, those that are present in presynaptic terminals, will be discussed in relation to their function in mediating neurotransmitter release. Voltage-gated calcium channels have properties that ensure they are specialized for particular roles, for example, differences in their activation voltage threshold, their various kinetic properties, and their voltage-dependence of inactivation. All these attributes play into the ability of the various voltage-gated calcium channels to participate in different patterns of presynaptic vesicular release. These include synaptic transmission resulting from single action potentials, and longer-term changes mediated by bursts or trains of action potentials, as well as release resulting from graded changes in membrane potential in specialized sensory synapses.
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