LEGARTOVA, Sona, Gabriela LOCHMANOVÁ and Eva BARTOVA. 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. LIFE-BASEL. SWITZERLAND: MDPI, 2022, vol. 12, No 6, p. 798-808. ISSN 2075-1729. Available from: https://dx.doi.org/10.3390/life12060798.
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Basic information
Original name 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
Authors LEGARTOVA, Sona, Gabriela LOCHMANOVÁ (203 Czech Republic, guarantor, belonging to the institution) and Eva BARTOVA.
Edition LIFE-BASEL, SWITZERLAND, MDPI, 2022, 2075-1729.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10608 Biochemistry and molecular biology
Country of publisher Switzerland
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 3.200
RIV identification code RIV/00216224:14310/22:00128177
Organization unit Faculty of Science
Doi http://dx.doi.org/10.3390/life12060798
UT WoS 000816235000001
Keywords in English histone H1; histone H3; chromatin; epigenetic; nucleolus; mass spectrometry
Tags CF PROT, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavla Foltynová, Ph.D., učo 106624. Changed: 9/2/2023 10:44.
Abstract
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.
Links
EF18_046/0015974, research and development projectName: Modernizace České infrastruktury pro integrativní strukturní biologii
LM2018127, research and development projectName: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
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