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But it is the first time an amino acid has been discovered on a comet.
VOA: special.2009.09.30
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Proteins are only susceptible to phosphorylation if they have certain kinds of amino acid sequences.
只有含这些氨基酸的蛋白质,才能够被磷酸化
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One of them has the right sequence of codons to specify the amino acid sequence of the protein, and the other one has a complimentary sequence.
该段带有正确的密码子序列,能够指导氨基酸序列合成蛋白质,另一段则是它的互补序列
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They bring into proximity an amino acid so that instead of forming a new polymer of a nucleic acid, a polymer of an amino acids is formed.
同时它所携带氨基酸相互邻接,从而形成了一个氨基酸聚合物,而非核酸聚合物
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That's because every three base pairs describes an amino acid in a protein.
那是因为每三个碱基对,对应一个蛋白质中的一个氨基酸
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There are more than 20 amino acids that make up the biological polymers called proteins, so there are 20 choices of each amino acid at a position on a protein.
而那些称为蛋白质的生物活性多聚体,是由二十种不同氨基酸所构成,因此每个蛋白质的,任意位点都有多达二十种氨基酸可供选择
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At the other end, is attached the amino acid leucine.
在另一端就携带着一个亮氨酸分子
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How would I know what amino acid that is?
我怎么知道这个氨基酸是什么呢
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That creates a problem in the genetic code in that there's 64 possible sequences but there's only 20 some amino acids, so each amino acid can be specified by more than one codon.
这里有个问题,遗传密码有六十四种可能的序列,而只有二十种氨基酸,因此每种氨基酸都有,不止一种密码子与之对应
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Say it's , that specify an amino acid.
这里是GCU,这就确定了一个氨基酸
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