重要的是,如果早期生命以如上所述的方式开始,细胞的使用DNA,RNA和蛋白质代码的“达尔文过渡”,必须在某个时候通过遗传密码发生。
Third, and massively important, if early life started as sketched above, a “Darwinian transition” to cells that use DNA, RNA and code for proteins via a genetic code must take place at some point.
一个令人振奋的发现:在中东家庭里发现的大多数遗传缺陷并不在基因的商业部分里——鉴定大脑蛋白质的密码。
One encouraging finding: most of the genetic defects identified in the Middle Eastern families were not in the business part of the gene -the part that codes for a critical brain protein.
从结构上来讲,基因包含三个区域:称为启动子的调节区域;与其并列的编码蛋白质的密码子区域;以及3'端尾部序列。
Structurally, a gene is formed by three regions: a regulatory region called the promoter juxtaposed to the coding region containing the protein sequence, and a “3’ tail” sequence.
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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