An octamer of histones H3 and H4 forms a compact complex with DNA of nucleosome size.
An octamer of histones H3 and H4 forms a compact complex with DNA of nucleosome size.
复制标题
组蛋白 H3 和 H4 的八聚体与核小体大小的 DNA 形成紧密的复合物。
DOI:
10.1093/nar/5.12.4805
复制
发表时间:
1978
影响因子:
14.9
通讯作者:
G. Felsenfeld
中科院分区:
文献类型:
--
作者:
R. Simon;R. Camerini‐Otero;G. Felsenfeld
Equimolar mixtures of histones H3 and H4 have been reconstituted onto DNA of nucleosome core size. Two distinct complexes are formed in a relative abundance that depends on the starting ratio of H3 + H4 to DNA. One of these complexes contains two H3-H4 dimers for each DNA molecule, and has a sedimentation coefficient of 7.5S. The other complex contains an octamer consisting of four H3-H4 dimers, and has a sedimentation coefficient of 10.4S. On the basis of these measurements, we conclude that the octamer complex (but not the tetramer complex) is a fully folded, compact structure resembling the nucleosome.