between 0.3 and 0.6 m nacl the basic amino acid residues in a nucleosome core particle were classified into the following three groups : ( 1 ) 42 arginine and 78 lysine residues in the n-terminal and c-terminal regions of the histones that are exposed to solvent , ( 2 ) a small number of arginine residues ( approximately less than 14 arg ) that are strongly bound to the dna phosphates , and ( 3 ) 48 arginine and 38 lysine residues buried in the globular region of the histone octamer .
C0301714
basic
C0024337
lysine