延长突变terminator codon mutation，又称终止密码突变。基因中一个终止密码突变为编码某个氨基酸的密码子的突变称为延长突变。
但是恰恰是一些个子不高的人会有很少见的基因突变，也就是“高寿基因”，它可以延长寿命。
Also, some shorter people possess a rare genetic mutation, known as the "Methuselah gene," that seems to extend their life spans.
侏儒鼠拥有相同的GHR突变有着癌症发病率低，增加胰岛素敏感性预防糖尿病，并且延长寿命的特点。
Dwarf mice with the same GHR mutation have low cancer rates, increased insulin sensitivity that protects against diabetes, and extended life span.
蛋白突变库主要应用于提高蛋白亲和力、延长半衰期、确定蛋白关键残基。
Mutagenesis library is developed for identifying key residues of protein, raising the affinity, and prolonging half-lif.
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