these observations not only suggest a convenient method for fractionating matrix structures from rat liver nuclei into biochemically and morphologically discrete components , but also identify a subset of major non-lamin , non-histone nuclear polypeptides ( comprising approx . 20 % of the total nuclear protein ) whose intermolecular interactions can be reversibly stabilized apparently by intermolecular disulfide bond formation by natt .
C0007610
nuclei
C0019652
histone