Being deprived of even one essential amino acid is enough for the GCN2 kinase to switch the metabolism into an emergency mode.

即使是去除一种必需氨基酸也足够让GCN2激酶把代谢调到紧急模式。

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In contrast, the mice without the GCN2 kinase kept a steady liver mass and lost only 69 percent of the adipose tissue on their abdomens.

相反，没有GCN2激酶的小鼠没有肝重量减少，只有69%的腹部脂肪组织减少。

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