Chromatin fragments, prepared by brief digestion with DNase II or micrococcal nuclease,
separated into a family of bands on sucrose gradients. The slowest migrating band with an S …

The digestion of chromatin in situ with DNase I reveals, after denaturation, a regular series of
single stranded DNA fragments the lengths of which represent multiples of 10 bases. These …

When chromatin from a diverse range of eukaryotes is prepared for the electron microscope
by aldehyde fixation followed by centrifugation onto the grid, the fibers are composed of …

Publisher Summary This chapter discusses methods used for isolation and characterization
of chromatin subunits. Most reported physical studies of chromatin subunits have used more …

A model is proposed for the structure of DNA in chromatin sub-units. Each sub-unit is
proposed to contain two turns of an inner coil, with a pitch of about 40and an external …

DNA isolated from (a) liver chromatin digested in situ with endogenous Ca 2+, Mg 2+-
dependent endonuclease,(b) prostate chromatin digested in situ with micrococcal nuclease …

Biochemical evidence is presented which confirms that the DNA repeat length in
micrococcal nuclease (spleen endonuclease, nucleate 3'-oligonucleotidohydrolase, EC 3-1 …

The time course of the fragmentation of calf thymus chromatin by DNase II
(deoxyribonucleate 3'-oligonucleotidohydrolase, EC 3.1. 4.6) has been examined by …

Each level of DNA folding in cells corresponds to a distinct chromatin structure. The basic
chromatin units, nucleosomes, are arranged into solenoids which form chromatin loops. To …

A comparison was made of the chromatin subunit ('nu'body) structure present in nuclei from
chicken erythrocytes, Tetrahymena cells, and Pisum sativum (pea) buds. All three types of …