另有证据显示，液态水的存在加剧了左型异缬氨酸（或者称之为L型异缬氨酸）的形成。
Evidence suggests that the presence of liquid water amplifies levels of left-handed isovaline (L-isovaline) in asteroids.
又称支链氨基酸。指氨基酸侧链上有分支的氨基酸如异亮氨基酸、亮氨酸和缬氨酸，它们都是人体必需氨基酸。
Branched-chain amino acids as essential amino acids, which is not only the raw materials for protein synthesis but also has special physiological and biological function.
又称支链氨基酸。指氨基酸侧链上有分支的氨基酸如异亮氨基酸、亮氨酸和缬氨酸，它们都是人体必需氨基酸。
Branched-chain amino acids as essential amino acids, which is not only the raw materials for protein synthesis but also has special physiological and biological function.
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