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Changs in Histone 3 Lysine 9 Acetylation (H3K9ac) in Arabidopsis seedlings in response to light

ABSTRACT: Changs in Histone 3 Lysine 9 Acetylation (H3K9ac) in Arabidopsis seedlings in response to light

PROVIDER: PRJNA752040 | ENA |

REPOSITORIES: ENA

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Changs in Histone 3 Lysine 9 Acetylation (H3K9ac) in Arabidopsis seedlings in response to light

Project description:We report the changes in H3K9ac in Arabidopsis thaliana seedlings grown in continuous white light, darkness or darkness and 1 hour of red light

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Genome-wide analysis of histone H3 lysine 9 acetylation in Populus trichocarpa under drought stress

Project description:We report on the genome-wide distribution pattern of histone H3 lysine 9 acetylation (H3K9ac) and the pattern’s association with whole genome expression profiles in Populus trichocarpa subjected to soil-water depletion. We identified a set of drought responsive genes whose expression is directly regulated by differential modification of H3K9ac.

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Acetylation on Histone H3 Lysine 9 Mediates a Switch from Transcription Initiation to Elongation

Project description:The transition from transcription initiation to elongation is a key regulatory step in gene expression, which requires RNA polymerase II (Pol II) to escape promoter proximal pausing on chromatin. While elongation factors promote pause release leading to transcription elongation, the role of epigenetic modifications during this critical transition step is poorly understood. Two histone marks on histone H3, lysine 4 trimethylation (H3K4me3) and lysine 9 acetylation (H3K9ac), co-localize on active gene promoters and are associated with active transcription. H3K4me3 can promote transcription initiation, yet the functional role of H3K9ac is much less understood. We hypothesized that H3K9ac may function downstream of transcription initiation by recruiting specific proteins important for the next step of transcription. Here, we describe a functional role for H3K9ac in promoting Pol II pause release by directly recruiting the super elongation complex (SEC) to chromatin. H3K9ac serves as a substrate for direct binding of the SEC, as does acetylation of histone H4 lysine 5 (H4K5ac), to a lesser extent. Furthermore, lysine 9 on histone H3 is necessary for maximal Pol II pause release through SEC action, and loss of H3K9ac increases the Pol II pausing index on a subset of genes in HeLa cells. At select gene promoters, loss of H3K9ac or depletion of the SEC reduces gene expression and increases paused Pol II occupancy. We therefore propose that an ordered histone code drives progression through the transcription cycle, providing new mechanistic insight that SEC recruitment to certain acetylated histones promotes the subsequent release of paused Pol II needed for transcription elongation.

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Rice (Oryza sativa) lysine-acetylation LC-MS/MS

Project description:Lysine acetylation is a dynamic and reversible post-translational modification that plays an imporant role in the gene transcription regulation. Here, we report high quality proteome-scale data for lysine-acetylation sites and proteins in rice (Oryza sativa). A total of 1337 Kac sites in 716 Kac proteins with diverse biological functions and subcellular localizations were identified in rice seedlings.

2016-02-24 | PXD002291 | Pride

Transcriptional response of Arabidopsis seedlings to light

Project description:We report the transcriptomic response of Arabidopsis thaliana seedlings grown in continuous white light, darkness or darkness and 1 hour of red light

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Comparison of genomic H3K9ac status in CD4 T cells with diverse progress of chronic hepatitis B

Project description:Histone 3 lysine 9 acetylation (H3K9ac) at transcription initiation sites is a well known marker for actively initiating and transcribing genes.The purpose of the present study was to investigate the association between H3K9ac and diverse progress of HBV infection. We employed chromatin immunoprecipitation microarray (ChIP-chip) technology to profile and compare the variations of genes H3K9ac in CD4 T cells of the CHB patients at the different clinic phases. The results showed there were lots of different genes with H3K9ac among the study groups. Comparison of genomic H3K9ac status in CD4 T cells from CHB patients at the different clinic phases

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Comparison of genomic H3K9ac status in CD4 T cells with diverse progress of chronic hepatitis B

2012-08-28 | GSE40365 | GEO

Transcriptional response of Arabidopsis seedlings to light

Project description:Transcriptional response of Arabidopsis seedlings to light

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