the proteolysis of the chromatin core particle by the arginine-specific endopeptidase clostripain yields a new nucleoprotein particle containing an unaltered dna fragment of about 145 base pairs in length and a protein octameric core made up of twice the four histone fragments h2a , h2b , h3 and h4 .
C1518457
core particle
C0086411
h2b