Thus a receptor may be a protein, enzyme, membrane channel, or a region of a foreign pathogen.
这样的受体可以是蛋白质、酶、膜通道或外来病原体的一个区域。
2
An ion channel is a protein that lets charged particles enter or leave a cell to generate electrical signals, a basic process of nerve cell communication.
离子通道是可以让带电粒子进入或离开细胞，产生电信号的一类蛋白，是神经细胞交流的基础。
3
The mutation itself is in a gene for a nerve-cell protein of a type known as an ion channel.