J 2022

The Highest Density of Phosphorylated Histone H1 Appeared in Prophase and Prometaphase in Parallel with Reduced H3K9me3, and HDAC1 Depletion Increased H1.2/H1.3 and H1.4 Serine 38 Phosphorylation

LEGARTOVA, Sona, Gabriela LOCHMANOVÁ a Eva BARTOVA

Základní údaje

Originální název

The Highest Density of Phosphorylated Histone H1 Appeared in Prophase and Prometaphase in Parallel with Reduced H3K9me3, and HDAC1 Depletion Increased H1.2/H1.3 and H1.4 Serine 38 Phosphorylation

Autoři

LEGARTOVA, Sona, Gabriela LOCHMANOVÁ (203 Česká republika, garant, domácí) a Eva BARTOVA

Vydání

LIFE-BASEL, SWITZERLAND, MDPI, 2022, 2075-1729

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10608 Biochemistry and molecular biology

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.200

Kód RIV

RIV/00216224:14310/22:00128177

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000816235000001

Klíčová slova anglicky

histone H1; histone H3; chromatin; epigenetic; nucleolus; mass spectrometry

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 9. 10. 2024 13:03, Ing. Martina Blahová

Anotace

V originále

Background: Variants of linker histone H1 are tissue-specific and are responsible for chromatin compaction accompanying cell differentiation, mitotic chromosome condensation, and apoptosis. Heterochromatinization, as the main feature of these processes, is also associated with pronounced trimethylation of histones H3 at the lysine 9 position (H3K9me3). Methods: By confocal microscopy, we analyzed cell cycle-dependent levels and distribution of phosphorylated histone H1 (H1ph) and H3K9me3. By mass spectrometry, we studied post-translational modifications of linker histones. Results: Phosphorylated histone H1, similarly to H3K9me3, has a comparable level in the G1, S, and G2 phases of the cell cycle. A high density of phosphorylated H1 was inside nucleoli of mouse embryonic stem cells (ESCs). H1ph was also abundant in prophase and prometaphase, while H1ph was absent in anaphase and telophase. H3K9me3 surrounded chromosomal DNA in telophase. This histone modification was barely detectable in the early phases of mitosis. Mass spectrometry revealed several ESC-specific phosphorylation sites of H1. HDAC1 depletion did not change H1 acetylation but potentiated phosphorylation of H1.2/H1.3 and H1.4 at serine 38 positions. Conclusions: Differences in the level and distribution of H1ph and H3K9me3 were revealed during mitotic phases. ESC-specific phosphorylation sites were identified in a linker histone.

Návaznosti

EF18_046/0015974, projekt VaV
Název: Modernizace České infrastruktury pro integrativní strukturní biologii
90127, velká výzkumná infrastruktura
Název: CIISB II