The ligands are bringing some message, they transmit the message by binding to the receptor.

配体带有一些信息,它们通过与受体结合来传递这些信息

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There's a diverse range of responses that might occur, but that response is initiated by this simple chemical process of a ligand binding to a receptor.

细胞对外界信号可能会发生不同的反应,但这些反应都源自,配体和受体结合这个简单的化学过程

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Sometimes they act by actually binding to the receptor.

有时拮抗剂与受体相结合

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For example, HIV enters cells of the immune system by binding to a receptor called CD4.

比如,HIV通过与CD4的受体结合,进入到免疫系统细胞中

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The receptor for estrogen is a special molecule called a DNA binding factor.

雌激素受体是一类特殊的分子,叫做DNA结合因子

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It gets produced in response to a signal so there's a binding of a ligand to a receptor, the enzyme that does this conversion is activated and more cycle AMP is released.

这类分子的产生是对信号做出的一种反应,当配体和受体结合时,催化这种转化过程的酶被激活,更多的cAMP释放出来

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