m****n 发帖数: 2754 | 1 氨基酸有几十种
分为左旋和右旋
构成生命所需蛋白质的氨基酸
几乎都是右旋,只有甘氨酸是左旋的
有什么理由么? | o*****r 发帖数: 156 | 2 ???
glycine is not chiral, and all 19 others are L- in most cases.
【在 m****n 的大作中提到】 : 氨基酸有几十种 : 分为左旋和右旋 : 构成生命所需蛋白质的氨基酸 : 几乎都是右旋,只有甘氨酸是左旋的 : 有什么理由么?
| m****n 发帖数: 2754 | 3
我是想问
为什么只有左旋的才能构造生命蛋白质
【在 o*****r 的大作中提到】 : ??? : glycine is not chiral, and all 19 others are L- in most cases.
| k****u 发帖数: 3454 | 4 There has been many speculations..
One is associated with an incident during the formation of organic matter
and primitive life early in earth history. I can't remember where I read it,
but it issaid it could be due to an accidental orientation of the self-spin
of earth that makes L-amino acids and similar other chiral substances
incorporated into life.
【在 m****n 的大作中提到】 : : 我是想问 : 为什么只有左旋的才能构造生命蛋白质
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