A nonamer of histones in chromatin

The results of dimethyl suberimidate cross-linking experiments demonstrate that histone H1 can be cross-linked quantitatively to the histone octamer of mononucleosomes to yield a histone nonamer. By combining our cross-linking procedure with two-dimensional electrophoretic techniques, we show further that it is possible to trace the nucleosomal origins of a spectrum of cross-linked chromatin products.