关于“细胞间通讯”的一个有趣问题就是:如此众多的信号只是由有限的几个信号传递系统来传递。过去我们一直认为有许多受体来执行不同的信号传递任务,然而近年来人们逐步发现细胞内还有许多不同的信号传递途径。许多参与这些过程的蛋白质的编码基因已被克隆化,如GTP结合蛋白家族,还有钙/磷脂依赖的蛋白激酶(PKC)等。 An interesting question about “cell-to-cell communication” is that so many signals are only transmitted by a limited number of signaling systems. In the past, we have always believed that there are many receptors to perform different signaling tasks. However, in recent years, people have gradually discovered that there are many different signaling pathways in cells. Many of the genes encoding proteins involved in these processes have been cloned, such as the GTP-binding protein family, and calcium/phospholipid-dependent protein kinases (PKCs).