Flash mob in the nucleus: Study clarifies why some proteins 'flock together'

Almost all cells in our body contain a nucleus: a somewhat spherical structure that is separated from the rest of the cell by a membrane. Each nucleus contains all the genetic information of the human being. It serves as a kind of library—but one with strict requirements: If the cell needs the building instructions for a protein, it won't simply borrow the original information. Instead, a transcript of it is made in the nucleus.

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