Number of flat super helices of chromatin around nucleosome core particle

Range 7/4 Turns
Organism Eukaryotes
Reference Widom J. Structure, dynamics, and function of chromatin in vitro.Annu Rev Biophys Biomol Struct. 1998 27:285-327. p.287 4th paragraphPubMed ID9646870
Method X-ray crystallography
Comments The initial or lowest level of chromatin organization consists of the local wrapping of a short stretch of DNA, 147 bp in length, in ˜ 1 3/4 turns of a flat superhelix around an octameric histone protein core, which is composed of two molecules each of histones H2A, H2B, H3, and H4. This complex of the histone octamer and 147 bp of DNA is known as the nucleosome core
Entered by Uri M
ID 102986