micrococcal nuclease ( ec 3.1.4.7 ) digestion of histone h1- and h5-depleted chicken erythrocyte chromatin yields , in addition to 140-base-pair ( bp ) core particles , a series of nucleosome oligomers containing about 260 bp ( compact dimer ) , 380 bp ( compact trimer ) , etc . of dna .
C0008546
chromatin
C0028623
nucleosome