...蛋白质的分离纯化、序列分析及结构测定的原理及主要方法 Requirements 一、蛋白质的分子组成 (Molecular components of protein) 1.
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20种不同的有机分子结合起来组成多肽链或蛋白质。这20个氨基酸主结构相同，但每种又分别有各自不同的侧基团。
One of the 20 different organic molecules that are joined together to form a polypeptide chain or a protein the twenty amino acids share a common backbone, but each has a specific side-group.
因此，原理上蛋白质能记录下组成DNA分子的碱基序列（一种带着基因编码的化学“字符”）。
So, in principle, the protein can record the order of the bases (the chemical “letters” that carry the genetic code) which make up the molecule.
由两个相同的分子组成的二聚体或复合体，通常是蛋白质。
A dimer or complex of two of the same molecule, usually a protein.
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