These are molecules that exist naturally in cell membranes and are activated by certain enzymes and kinases generated by receptors.

这些分子存在于细胞膜表面,能被受体激活的某种酶或激酶所活化

耶鲁公开课 - 生物医学工程探索课程节选

They go across the membrane - this is the trans-membrane part of the receptor that's going across the membrane.

它们跨越式的存在于细胞膜上,这就是受体的跨膜部分,它跨越了细胞膜

耶鲁公开课 - 生物医学工程探索课程节选

I mentioned earlier, we thought about receptors as being these blocks and membranes but there are different families of receptors.

我之前讲过,我们把受体看做一类,固定在细胞膜上的分子,但受体有许多不同家族

耶鲁公开课 - 生物医学工程探索课程节选

That general class of molecules is called receptors and its shown here just as a block of material living in the cell membrane.

这一类分子叫做受体,在这里看起来就像是,生活在细胞膜内的物质

耶鲁公开课 - 生物医学工程探索课程节选

For now, just picture it in this simple way as a molecule, usually a protein, that's embedded in the cell membrane and many receptors have a part of them that is extracellular.

现在,我只把这种分子图示出来,受体通常是一种蛋白质,它们镶嵌在细胞膜上,很多受体还有部分结构露在细胞外

耶鲁公开课 - 生物医学工程探索课程节选