Download MendeleyX-ray structure of the MMTV-A nucleosome core.
Frouws, T.D., Duda, S.C., Richmond, T.J.(2016) Proc Natl Acad Sci U S A 113: 1214-1219
- PubMed: 26787910
- DOI: https://doi.org/10.1073/pnas.1524607113
- Primary Citation of Related Structures:
5F99 - PubMed Abstract:
The conformation of DNA bound in nucleosomes depends on the DNA sequence. Questions such as how nucleosomes are positioned and how they potentially bind sequence-dependent nuclear factors require near-atomic resolution structures of the nucleosome core containing different DNA sequences; despite this, only the DNA for two similar α-satellite sequences and a sequence (601) selected in vitro have been visualized bound in the nucleosome core. Here we report the 2.6-Å resolution X-ray structure of a nucleosome core particle containing the DNA sequence of nucleosome A of the 3'-LTR of the mouse mammary tumor virus (147 bp MMTV-A). To our knowledge, this is the first nucleosome core particle structure containing a promoter sequence and crystallized from Mg(2+) ions. It reveals sequence-dependent DNA conformations not seen previously, including kinking into the DNA major groove.
Organizational Affiliation:
Institute of Molecular Biology and Biophysics, Department of Biology, Swiss Federal Institute of Technology Zurich, 8093 Zurich, Switzerland.
