Dynamic networks observed in the nucleosome core particles couple the histone globular domains with DNA.
Commun Biol
; 3(1): 639, 2020 10 30.
Article
en En
| MEDLINE
| ID: mdl-33128005
ABSTRACT
The dynamics of eukaryotic nucleosomes are essential in gene activity and well regulated by various factors. Here, we elucidated the internal dynamics at multiple timescales for the human histones hH3 and hH4 in the Widom 601 nucleosome core particles (NCP), suggesting that four dynamic networks are formed by the residues exhibiting larger-scale µs-ms motions that extend from the NCP core to the histone tails and DNA. Furthermore, despite possessing highly conserved structural features, histones in the telomeric NCP exhibit enhanced µs-ms dynamics in the globular sites residing at the identified dynamic networks and in a neighboring region. In addition, higher mobility was observed for the N-terminal tails of hH3 and hH4 in the telomeric NCP. The results demonstrate the existence of dynamic networks in nucleosomes, through which the center of the core regions could interactively communicate with histone tails and DNA to potentially propagate epigenetic changes.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Histonas
/
Nucleosomas
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Commun Biol
Año:
2020
Tipo del documento:
Article
País de afiliación:
Singapur