J 2023

Histone H1 protects telomeric repeats from H3K27me3 invasion in Arabidopsis

TEANO, Gianluca, Lorenzo CONCIA, Lea WOLFF, Leopold CARRON, Ivona BIOCANIN et. al.

Basic information

Original name

Histone H1 protects telomeric repeats from H3K27me3 invasion in Arabidopsis

Authors

TEANO, Gianluca, Lorenzo CONCIA, Lea WOLFF, Leopold CARRON, Ivona BIOCANIN, Kateřina ADAMUSOVÁ (203 Czech Republic, belonging to the institution), Miloslava FOJTOVÁ (203 Czech Republic, belonging to the institution), Michael BOURGE, Amira KRAMDI, Vincent COLOT, Ueli GROSSNIKLAUS, Chris BOWLER, Celia BAROUX, Alessandra CARBONE, Aline V PROBST, Petra PROCHÁZKOVÁ SCHRUMPFOVÁ (203 Czech Republic, belonging to the institution), Jiří FAJKUS (203 Czech Republic, belonging to the institution), Simon AMIARD, Stefan GROB, Clara BOURBOUSSE and Fredy BARNECHE (guarantor)

Edition

Cell Reports, Elsevier, 2023, 2211-1247

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10611 Plant sciences, botany

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 8.800 in 2022

RIV identification code

RIV/00216224:14740/23:00133328

Organization unit

Central European Institute of Technology

UT WoS

001057847700001

Keywords in English

3D chromosome organization; Arabidopsis; chromatin accessibility; CP: Molecular biology; CP: Plants; H3K27me3; linker histone H1; Polycomb; telomere; Telomere Repeat Binding protein; TRB

Tags

Tags

International impact, Reviewed
Změněno: 9/3/2024 12:09, Mgr. Eva Dubská

Abstract

V originále

While the pivotal role of linker histone H1 in shaping nucleosome organization is well established, its func-tional interplays with chromatin factors along the epigenome are just starting to emerge. Here we show that, in Arabidopsis, as in mammals, H1 occupies Polycomb Repressive Complex 2 (PRC2) target genes where it favors chromatin condensation and H3K27me3 deposition. We further show that, contrasting with its conserved function in PRC2 activation at genes, H1 selectively prevents H3K27me3 accumulation at telo-meres and large pericentromeric interstitial telomeric repeat (ITR) domains by restricting DNA accessibility to Telomere Repeat Binding (TRB) proteins, a group of H1-related Myb factors mediating PRC2 cis recruitment. This study provides a mechanistic framework by which H1 avoids the formation of gigantic H3K27me3-rich domains at telomeric sequences and contributes to safeguard nucleus architecture.

Links

GX20-01331X, research and development project
Name: Biogeneze a evoluce telomerázy u rostlin
Investor: Czech Science Foundation
LTC20003, research and development project
Name: Dynamics of telomeres and rDNA loci in plant cell nuclei
Investor: Ministry of Education, Youth and Sports of the CR, INTER-COST