Many steroid hormones act because they bind to cellulars - to receptors that are deep within the cell, often inside the nucleus.

许多类固醇激素能够起效是因为,其与存在于细胞内部的受体相结合,这类受体通常在细胞核内

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They're sometimes called transcription factors and this is an example of a transcription factor that is itself activated or turned on by the presence of a steroid.

它们被称为转录因子,转录因子的一个例子就是,能够自激活或被激素激活

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Steroid hormones can operate in a different way because of their structure.

类固醇类激素的作用原理有所不同,这主要是因为它们的结构与蛋白质不同

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Steroid hormones, on the other hand, molecules like testosterone and estrogen, progesterone, the sex steroids that determine sexual characteristics and are important for reproductive function are molecules that are all derived from a similar source.

另一方面,类固醇类激素,像睾丸激素,雌激素,黄体酮这样的分子,性激素决定了性征,它对生殖功能十分重要,这类分子有着相似的来源

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