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 BARTOVAZákladní 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
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 |
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90127, velká výzkumná infrastruktura |
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