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Big jobs go to loyal proteins

Cells offload nonessential work on multitasking enzymes

Monogamy is not for the faint of heart, at least if you’re a protein.

Scientists examining the convoluted network of a cell’s metabolic reactions find that loyal proteins — those that stick to one main task — have important, high-stress jobs. Their promiscuous counterparts, which dabble in various chemical reactions, carry out tasks less crucial to life.

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