in the absence of histone hyperacetylation , the fish protamines , salmine and iridine ( 32-33 residues ) , are relatively inefficient in disassembling nucleosomal core particles in vitro as compared to the large ( 65-70 residues ) , tyrosine-containing protamines from rooster ( galline ) , squid , and cuttlefish which disassemble nucleosomes in a range of protamine concentrations close to physiological .
C0019652
histone
C0028623
nucleosomes