Among 20 basicaminoacids, glycine is the only one not exhibiting chirality, and other 19 are all L-amino.
在传统的20种天然氨基酸中,除没有手性中心的甘氨酸外,其他19种氨基酸均为L构型。
2
Basic organic (life) chemicals such as aminoacids have been detected in nebulae and meteorites (see meteors).
构成生命组织的基本化学物如氨基酸,在星云和陨石中也被发现。
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What's more, the aminoacids are similar to those found on certain types of meteorites.Which suggests that the basic constituents of life could be widespread in the universe.