Browsing by Subject "Histones"
Now showing items 1-13 of 13
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Beyond the histone tail: acetylation at the nucleosome dyad commands transcription.
(2013)Post-translational modifications (PTMs) of histones have been implicated in cellular processes such as transcription, replication and DNA repair. These processes normally involve dynamic changes in chromatin structure and ...
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Composition and histone substrates of polycomb repressive group complexes change during cellular differentiation
(2005)Changes in the substrate specificities of factors that irreversibly modify the histone components of chromatin are expected to have a profound effect on gene expression through epigenetics. Ezh2 is a histone-lysine ...
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Cross-talk among epigenetic modifications: Lessons from histone arginine methylation
(2013)Epigenetic modifications, including those occurring on DNA and on histone proteins, control gene expression by establishing and maintaining different chromatin states. In recent years, it has become apparent that epigenetic ...
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Depletion of histone N-terminal-acetyltransferase Naa40 induces p53-independent apoptosis in colorectal cancer cells via the mitochondrial pathway
(2016)Protein N-terminal acetylation is an abundant post-translational modification in eukaryotes implicated in various fundamental cellular and biochemical processes. This modification is catalysed by evolutionarily conserved ...
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Distinct transcriptional outputs associated with mono- and dimethylated histone H3 arginine 2
(2009)Dimethylation of histone H3 Arg2 (H3R2me2) maintains transcriptional silencing by inhibiting Set1 mediated trimethylation of H3K4. Here we demonstrate that Arg2 is also monomethylated (H3R2me1) in yeast but that its ...
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Histone H3 tail clipping regulates gene expression
(2009)Induction of gene expression in yeast and human cells involves changes in the histone modifications associated with promoters. Here we identify a histone H3 endopeptidase activity in Saccharomyces cerevisiae that may ...
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Loss of Nat4 and its associated histone H4 N-terminal acetylation mediates calorie restriction-induced longevity
(2016)Changes in histone modifications are an attractive model through which environmental signals, such as diet, could be integrated in the cell for regulating its lifespan. However, evidence linking dietary interventions with ...
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N-alpha-terminal Acetylation of Histone H4 Regulates Arginine Methylation and Ribosomal DNA Silencing
(2013)Post-translational modifications of histones play a key role in DNA-based processes, like transcription, by modulating chromatin structure. N-terminal acetylation is unique among the numerous histone modifications because ...
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The Polycomb Group Protein SUZ12 regulates histone H3 lysine 9 methylation and HP1α distribution
(2007)Regulation of histone methylation is critical for proper gene expression and chromosome function. Suppressor of Zeste 12 (SUZ12) is a requisite member of the EED/EZH2 histone methyltransferase complexes, and is required ...
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Doctoral Thesis Open Access
The role of histone N-terminal acetyltransferase Naa40 in gene expression and colorectal cancer cell death
(Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2016-04)Η αμινο-τελική ακετυλίωση (Nτ-ακετυλίωση) των πρωτεϊνών αποτελεί μία από τις συνηθέστερες τροποποιήσεις που παρουσιάζονται στο 80-90% των κυτταροπλασματικών, ευκαρυωτικών πρωτεϊνών. Αυτή η τροποποίηση έχει αναδειχθεί ως ...
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Doctoral Thesis Open Access
The role of N-alpha terminal acetyltransferase NAT4 in the regulation of gene expression in Saccharomyces cerevisiae
(Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2015-12)Η Ν-άλφα-τελική ακετυλίωση είναι μια από τις πιο κοινές συντηρημένες τροποποιήσεις πρωτεϊνών σε ευκαρυωτικά κύτταρα, η οποία εμφανίζεται επίσης και σε ιστόνες. Διακρίνεται από τις υπόλοιπες τροποποιήσεις ...
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Article
Silencing of human polycomb target genes is associated with methylation of histone H3 Lys 27
(2004)Polycomb group (PcG) complexes 2 and 3 are involved in transcriptional silencing. These complexes contain a histone lysine methyltransferase (HKMT) activity that targets different lysine residues on histones H1 or H3 in ...
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