原始蛋白质 urprotein
The origin of amino acid and genetic code has studied better in the past decades, but we know little about the primitive protein, because it is very difficult to explore the structures and functions of the very ancient proteins.
这是因为研究原始蛋白的结构与功能是很困难的。
参考来源 - 原始蛋白结构与功能的生物信息学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
这是因为，如果原始的蛋白质的集合对于所有的生物都是一样的话，那么只需要相对少量的突变就可以成为现代的蛋白质，他说。
That's because, if the original protein set was the same for all creatures, a relatively small number of mutations would have been needed to arrive at the modern proteins, he said.
在蛋白质进化到具有与皮质醇结合的新功能后产生的这些突变，如果蛋白质返回到原始状态，会导致其结构上产生冲突。
These mutations, which occurred after the protein evolved its new function to bind to cortisol, would cause structural clashes within the protein if it were returned to its ancestral state.
在原始人的时代，男人是猎手，要依赖蛋白质来长肌肉，并把肉类看作是战利品。而女人则负责采集水果和蔬菜。
As cavemen, he suggests, men were hunters, relying on protein to build muscles, and seeing meat as a reward, while women were gatherers of fruit and vegetables.
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