we have prepared semi-synthetic chromatin core particles from a complex of chicken erythrocyte inner histones ( h2a , h2b , h3 and h4 ) with double-stranded poly ( dadt ) .poly ( dadt ) and studied the conformation of the phosphodiester backbone using 31p nmr at 109.3 mhz .
C1518457
core particles
C0086411
h2b