purine中文什么意思

n.
【化学】嘌呤，尿(杂)环；四氮杂茚。

• amino purine:    氨基嘌呤
• endogenous purine:    内原性嘌呤
• nuclease purine:    嘌呤核酸酶

例句与用法

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1. The purine and pyrimidine may be complexed with a sugar to produce a nucleoside .
   嘌呤和嘧啶可以同一个糖复合，产生一个核苷。
2. The substitution of a purine for a pyrimidine, or vice versa is a transversion .
   嘌呤为嘧啶取代或嘧啶为嘌呤所取代，叫做颠换。
3. In other words, replacement of the number 8 carbon by nitrogen in the purine ring does not eliminate activity .
   换句话说，嘌呤环上第8位碳被氮所取代并不丧失活性。
4. In dna, four different bases are found. two of these, adenine and guanine, are double-ring structures called purines .
   在DNA中，有四种不同的基，其中的两个为腺嘌呤和鸟嘌呤，即称为嘌呤的双环结构。
5. In dna, four different bases are found. two of these, adenine and guanine, are double-ring structures called purines .
   在DNA中，有四种不同的碱基，其中的两个为腺嘌呤和鸟嘌呤，即称为嘌呤的双环结构。

英文释义

名词

1. a colorless crystalline organic base containing nitrogen; the parent compound of various biologically important substances
2. any of several bases that are derivatives of purine