our previous work [ levinger , l. & varshavsky , a . ( 1982 ) cell 28 , 375-385 ] has shown that d1 , a 50-kilodalton chromosomal protein of drosophila melanogaster , is specifically associated with isolated nucleosomes that contain a complex a + t-rich satellite dna with buoyant density of 1.688 g/ml .
C0007634
cell
C0028623
nucleosomes