电压门控离子通道(Voltage-gated Ion Channel)主要有钠、钾、钙等离子通道,通常由同一亚基的四个跨膜区段围成孔道,孔道中有一些带电基团(电位敏感器)控制闸门,当跨膜电位发生变化时,电敏感器在电场力的作用下产生位移,响应膜电位的变化,造成闸门的开启或关闭。孔道口的孔径和电荷分布形成离子选择器,但并非对其它离子绝对不通透。
名词定义中文名称:电压门控离子通道英文名称:voltage-gated ion channel定义1:在细胞膜或内质网膜上形成贯穿脂双层膜的亲水性孔道的穿膜蛋白质。广泛分布在各类可兴奋细胞的细胞膜上,对膜电位变化敏感并随之而开启,是神经元等细胞转导电信号
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电压门控离子通道(voltage gated channels,VGC) 2. 化学门控离子通道ligand gated channels,LGC 按对离子选择性: 1.
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电压门控钾离子通道 Voltage-gated potassium channel ; VGPCS
电压门控钙离子通道 VGCC
电压门控钠离子通道 voltage-gated sodium channel ; VGSC
电压门控性钾离子通道 Voltage-gated potassium channel
电压门控型钙离子通道 voltage-gated calcium channel ; VOCC
电压门控性钠离子通道 voltage-gated sodium channel
和电压门控钠离子通道 Voltage-gated sodium channel
研究了电压门控离子通道噪声和突触噪声共同作用下非线性积分点火模型的相干共振现象。
The phenomenon of coherence resonance of a nonlinear integral-and-fire model subject to a voltage-gated channel noise and a synaptic noise is investigated.
目的探讨体外培养不同时期新生小牛视网膜神经元电压门控钾离子通道的特性。
The characterizations of voltage-activated potassium channels were studied on newborn bovine retinal neurons in long-term cultures with whole-cell patch clamp technique.
但这种通道的门控机制与其他电压门控的阳离子通道有很大的差别。
But its gating mechanism is different from the voltage dependent cation channels.
That change happens because something gets triggered in the membrane, and what gets triggered is a voltage gated sodium channel, which is shown here.
变化的原因是膜上某些东西被触发了,被触发的是钠离子电压门控通道,展示在这儿了
Now, remember we talked about these last time, voltage-gated channels are channels that would allow the passage of sodium, in this case, but they can exist in two states, a closed state and an open state.
还记得我们上节课讨论过的吧,电压门控通道是,一种可以容许钠离子通过的通道,在这一例子中 电压门控通道有两种状态,关闭状态和开放状态
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