以下为句子列表：
英文: Histidine A basic amino acid formed only rarely in proteins. It is formed from ATP and 5-phosphoribosyl pyrophosphate in a complex biosynthetic pathway. Glutamate is an intermediate in its breakdown.
中文: 组氨酸：是蛋白质中少有的一种碱性氨基酸。由ATP和5-磷酸核糖基焦磷酸盐通过复杂的生物合成途径合成。在其降解过程中可形成谷氨酸。
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英文: Construction of Rabbit Hypoxanthine Guanine Phosphoribosyl Transferase Gene-Targeting Vector by Red Homologous Recombination System
中文: 利用Red同源重组系统构建兔次黄嘌呤-鸟嘌呤磷酸核糖转移酶基因打靶载体
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英文: The expression,purification and activity detect of quinolinic acid phosphoribosyl transferase and nicotinic acid phosphoribosyl transferase from Escherichia coli
中文: 大肠杆菌来源的喹啉酸磷酸核糖转移酶和烟酸磷酸核糖转移酶的表达纯化及酶活性的初步检测
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