Keratin-like proteins that coisolate with intermediate filaments of BHK-21 cells are nuclear lamins.


Four proteins of Mr approximately equal to 60,000, 65,000, 67,000, and 70,000 coisolate with the major intermediate filament (IF) structural proteins of BHK-21 cells. These proteins are keratin-like, they form distinctive paracrystals in vitro, and they are concentrated at the nuclear surface. Since these properties indicate similarities with the nuclear… (More)


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