蛋白质是生物体中非常重要的功能性分子，它们的形成过程经过了数十亿年的自然选择和进化。在这一过程中，蛋白质的序列和结构经过无数次随机突变，并通过生物系统的选择机制进行筛选，最终形成那些具有特定生物学功能的蛋白质。

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