Chemically reactive metabolites such as formaldehyde are often toxic and are proposed to react promiscuously with biomolecules. New work shows that some reactive sites on proteins are uniquely sensitive to formaldehyde, leading to functionally important regulation of protein and cell functions.

中文翻译：

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甲醛是朋友还是敌人

甲醛等化学反应性代谢物通常有毒，并且会与生物分子发生混杂反应。新的研究表明，蛋白质上的一些反应位点对甲醛特别敏感，从而对蛋白质和细胞功能产生重要的功能调节。