histone/애기장대

Previous studies in Arabidopsis thaliana have identified several histone methylation enzymes, including Arabidopsis trithorax1 (ATX1)/set domain group 27 (SDG27), ATX2/SDG30, LSD1-LIKE1 (LDL1), LDL2, SDG8, SDG25, and curly leaf (CLF)/SDG1, as regulators of the key flowering repressor flowering locus

Arabidopsis thaliana has four genes with close homology to human histone H3 lysine 4 demethylase (HsLSD1), a component of various transcriptional corepressor complexes that often also contain histone deacetylases and the corepressor protein CoREST. All four Arabidopsis proteins contain a flavin

Higher-order plants and mammals use similar mechanisms to repair and tolerate oxidative DNA damage. Most studies on the DNA repair process have focused on yeast and mammals, in which histone chaperone-mediated nucleosome disassembly/reassembly is essential for DNA to be accessible to repair

Two histone H3 and two histone H4 genes have been cloned from a λgtWESλ·B Arabidopsis thaliana gene library. From their nucleotide sequences and from studies on their genomic organization, the following conclusions can be drawn: : 1) The nucleotide sequences of the two H3 coding regions show only

Certain plant varieties typically require prolonged exposure to the cold of winter to become competent to flower rapidly in the spring. This process is known as vernalization. In Arabidopsis thaliana, vernalization renders plants competent to flower by epigenetically silencing the strong floral

Polycomb group (PcG) and trithorax group (trxG) proteins are key regulators of homeotic genes and have central roles in cell proliferation, growth and development. In animals, PcG and trxG proteins form higher order protein complexes that contain SET domain proteins with histone methyltransferase

BACKGROUND Acetylation is a crucial post-translational modification for histones, and plays a key role in gene expression regulation. Due to limited data and lack of a clear acetylation consensus sequence, a few researches have focused on prediction of lysine acetylation sites. Several systematic

Arginine methylation of histone H3 and H4 plays important roles in transcriptional regulation in eukaryotes such as yeasts, fruitflies, nematode worms, fish and mammals; however, less is known in plants. In the present paper, we report the identification and characterization of two Arabidopsis

Recently we reported that the Arabidopsis thaliana PHD-finger protein EDM2 (enhanced downy mildew 2) impacts disease resistance by affecting levels of di-methylated lysine 9 of histone H3 (H3K9me2) at an alternative polyadenylation site in the immune receptor gene RPP7. EDM2-dependent modulation of

The possible involvement of histone deacetylase (HDAC) in regulation of ROS content in the tissue culture of Arabidopsis thaliana under normal conditions and under development of acute osmotic stress was studied by using inhibition assay with application of trichostatin A (TSA). It was found that in

Telomeres are nucleoprotein complexes at the end of eukaryotic chromosomes. Many telomere-binding proteins bind to telomeric repeat sequences and further generate T-loops in animals. However, it is not clear if they regulate telomere organization using epigenetic mechanisms and how the epigenetic

Arabidopsis accessions Col-0 and C24 and their reciprocal hybrids were employed as a model system to investigate the potential relationship between changes in DNA methylation, chromatin structure, endopolyploidization and gene expression in heterotic genotypes. Nucleolus size, endopolyploidization

RNA-directed modification of histones is essential for the maintenance of heterochromatin in higher eukaryotes. In plants, cytosine methylation is an additional factor regulating inactive chromatin, but the mechanisms regulating the coexistence of cytosine methylation and repressive histone

Proteins that bind telomeric DNA modulate the structure of chromosome ends and control telomere function and maintenance. It has been shown that AtTRB (Arabidopsis thaliana telomere-repeat-binding factor) proteins from the SMH (single-Myb-histone) family selectively bind double-stranded telomeric

Arabidopsis thaliana histone deacetylase 1 (AtHD1 or AtHDA19), a homolog of yeast RPD3, is a global regulator of many physiological and developmental processes in plants. In spite of the genetic evidence for a role of AtHD1 in plant gene regulation and development, the biochemical and cellular