总之，氨基酸是很容易制造的，核苷酸也是可以制造的，但是有相当的难度，其他重要的生物小分子也可以被"无生命地"合成出来。
In summary, amino acids are easy to make, nucleotides can be made with considerable difficulty, and other biologically important small molecules can be synthesized “abiotically”.
本文综述了该酶的工业生产及应用领域，如乙醇生产，芳香族氨基酸和手性物质的生物合成等。
The application of transketolase for industrial purpose, such as production of ethanol, biosynthesis of aromatic amino acids and enantiotopic chemicals were reviewed.
两者蛋白质生物合成中的限制氨基酸都是苯丙氨酸和蛋氨酸。
The limitary amino acid for biosynthesis of protein in both of the animals are all phenylalanine and methionine.
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