You could watch where it localizes in the cell, there are fluorescent assays you could use to determine what other proteins it interacts with.

你可以看到它在细胞的什么地方，你可以用荧光化验的办法确定,它和其它什么蛋白质相作用。

麻省理工公开课 - 化学原理课程节选

You could see, for example, when it's expressed in a cancer cell, and where it's expressed.

你可以看到，比如说，它什么时候在癌细胞里被表达，在哪里被表达。

麻省理工公开课 - 化学原理课程节选