Similar Datasets
Project description:Background: Histone post-translational modifications (PTMs) constitute a branch of epigenetic mechanisms that can control the expression of eukaryotic genes in a heritable manner. Recent studies have identified several PTM-binding proteins containing diverse specialized domains whose recognition of specific PTM sites leads to gene activation or repression. Here, we present a high-throughput proteogenomic platform designed to characterize the nucleosomal make-up of chromatin enriched with a set of histone PTM-binding proteins known as histone PTM readers. We support our findings with gene expression data correlating to PTM distribution. Results: We isolated human mononucleosomes bound by the bromodomain-containing proteins Brd2, Brd3 and Brd4, and by the chromodomain-containing heterochromatin proteins HP1alpha and HP1beta. Histone PTMs were quantified by mass spectrometry (ChIP-qMS), and their associated DNAs were mapped using deep sequencing. Our results reveal that Brd- and HP1-bound nucleosomes are enriched in histone PTMs consistent with actively transcribed euchromatin and silent heterochromatin, respectively. Data collected using RNA-Seq (GSM301568) show that Brd-bound sites correlate with highly expressed genes. In particular, Brd3 and Brd4 are most enriched on nucleosomes located within HOX gene clusters, whose expression is reduced upon Brd4 depletion by shRNA. Conclusions: Proteogenomic mapping of histone PTM readers, alongside the characterization of their local chromatin environments and transcriptional information, should prove useful for determining how histone PTMs are bound by these readers and how they contribute to distinct transcriptional states. Examination of Brd and HP1 proteins-binding sites in HEK293 cells.
2012-07-31 | E-GEOD-39579 | biostudies-arrayexpress
Project description:In addition to germ cell population, testes contain several types of somatic cells, including Sertoli cells, Leydig cells, and peritubular myoid (PTM) cells. PTM cells are a type of smooth muscle-like cells and have contraction ability. To identify a marker of PTM cells, we isolated primary cells and subsequently performed miRNA-Seq of testicular peritubular myoid cells (PTM_1, PTM_2, PTM_3), testicular Sertoli cells (Sertoli_1, Sertoli_2, Sertoli_3), testicular Leydig cells (Leydig_1, Leydig_2, Leydig_3), testicular germ cells (Germ_1, Germ_2, Germ_3), vascular smooth muscle cells (VSMC_1, VSMC_2, VSMC_3), intestinal smooth muscle cells (ISMC_1, ISMC_2, ISMC_3), and tracheal smooth muscle cells (TSMC_1, TSMC_2, TSMC_3) using BGISEQ-500 platform (BGI, China).
2019-01-19 | GSE125302 | GEO
Project description:In addition to germ cell population, testes contain several types of somatic cells, including Sertoli cells, Leydig cells, and peritubular myoid (PTM) cells. PTM cells are a type of smooth muscle-like cells and have contraction ability. To identify a marker of PTM cells, we isolated primary cells and subsequently performed RNA-Seq of testicular peritubular myoid cells (PTM_1, PTM_2, PTM_3), testicular Sertoli cells (Sertoli_1, Sertoli_2, Sertoli_3), testicular Leydig cells (Leydig_1, Leydig_2, Leydig_3), testicular germ cells (Germ_1, Germ_2, Germ_3), vascular smooth muscle cells (VSMC_1, VSMC_2, VSMC_3), intestinal smooth muscle cells (ISMC_1, ISMC_2, ISMC_3), and tracheal smooth muscle cells (TSMC_1, TSMC_2, TSMC_3) using BGISEQ-500 platform (BGI, China).
2019-01-19 | GSE125303 | GEO
Project description:Background: Histone post-translational modifications (PTMs) constitute a branch of epigenetic mechanisms that can control the expression of eukaryotic genes in a heritable manner. Recent studies have identified several PTM-binding proteins containing diverse specialized domains whose recognition of specific PTM sites leads to gene activation or repression. Here, we present a high-throughput proteogenomic platform designed to characterize the nucleosomal make-up of chromatin enriched with a set of histone PTM-binding proteins known as histone PTM readers. We support our findings with gene expression data correlating to PTM distribution. Results: We isolated human mononucleosomes bound by the bromodomain-containing proteins Brd2, Brd3 and Brd4, and by the chromodomain-containing heterochromatin proteins HP1alpha and HP1beta. Histone PTMs were quantified by mass spectrometry (ChIP-qMS), and their associated DNAs were mapped using deep sequencing. Our results reveal that Brd- and HP1-bound nucleosomes are enriched in histone PTMs consistent with actively transcribed euchromatin and silent heterochromatin, respectively. Data collected using RNA-Seq (GSM301568) show that Brd-bound sites correlate with highly expressed genes. In particular, Brd3 and Brd4 are most enriched on nucleosomes located within HOX gene clusters, whose expression is reduced upon Brd4 depletion by shRNA. Conclusions: Proteogenomic mapping of histone PTM readers, alongside the characterization of their local chromatin environments and transcriptional information, should prove useful for determining how histone PTMs are bound by these readers and how they contribute to distinct transcriptional states. Comparison of Brd2 and HP1b shRNA knockdown HEK293 cells to control knockdown HEK293 cells.
2012-07-30 | E-GEOD-39580 | biostudies-arrayexpress
Project description:Potato response to PTM herbivory.
| PRJEB51839 | ENA
Project description:B-methylthiolation of the Escherichia coli Ribosomal Protein S12 Regulates Anaerobic Gene Expression. B-methylthiolation is a unique post-translational modification (PTM) that maps to a conserved Asp 88 of the bacterial ribosomal protein S12. This modification is phylogenetically conserved in several bacteria yet has not been identified on other proteins. We use microarrays to delineate the association of prokaryotic ribosomal protein PTM to the regulation of genes.
2010-05-27 | E-GEOD-21551 | biostudies-arrayexpress
Project description:Background: Histone post-translational modifications (PTMs) constitute a branch of epigenetic mechanisms that can control the expression of eukaryotic genes in a heritable manner. Recent studies have identified several PTM-binding proteins containing diverse specialized domains whose recognition of specific PTM sites leads to gene activation or repression. Here, we present a high-throughput proteogenomic platform designed to characterize the nucleosomal make-up of chromatin enriched with a set of histone PTM-binding proteins known as histone PTM readers. We support our findings with gene expression data correlating to PTM distribution. Results: We isolated human mononucleosomes bound by the bromodomain-containing proteins Brd2, Brd3 and Brd4, and by the chromodomain-containing heterochromatin proteins HP1alpha and HP1beta. Histone PTMs were quantified by mass spectrometry (ChIP-qMS), and their associated DNAs were mapped using deep sequencing. Our results reveal that Brd- and HP1-bound nucleosomes are enriched in histone PTMs consistent with actively transcribed euchromatin and silent heterochromatin, respectively. Data collected using RNA-Seq (GSM301568) show that Brd-bound sites correlate with highly expressed genes. In particular, Brd3 and Brd4 are most enriched on nucleosomes located within HOX gene clusters, whose expression is reduced upon Brd4 depletion by shRNA. Conclusions: Proteogenomic mapping of histone PTM readers, alongside the characterization of their local chromatin environments and transcriptional information, should prove useful for determining how histone PTMs are bound by these readers and how they contribute to distinct transcriptional states.
2012-07-31 | GSE39579 | GEO
Project description:Chryseobacterium marse PTM-20240506 genome sequencing
| PRJNA1224932 | ENA
Project description:We report the identification of 67 previously undescribed histone modifications, increasing the current number of known histone marks by about 70%. We further investigated one of the marks, lysine crotonylation (Kcr), confirming that it represents an evolutionarily-conserved histone posttranslational modification. The unique structure and genomic localization of histone Kcr suggest that it is mechanistically and functionally different from histone lysine acetylation (Kac). Specifically, in both human somatic and mouse male germ cell genomes, histone Kcr marks either active promoters or potential enhancers. In male germinal cells immediately following meiosis, Kcr is enriched on sex chromosomes and specifically marks testis-specific genes, including a significant proportion of X-linked genes that escape sex chromosome inactivation in haploid cells. These results therefore dramatically extend the repertoire of histone PTM sites and designate Kcr as a specific mark of active sex chromosome-linked genes in postmeiotic male germ cells. 2 histone marks (pan-lysine acetylation and pan-lysine crotonylation) were studied in 1 human cell type and 2 mouse cell types using ChIP-Seq. Input was sequenced for each cell type as a control. Pan-anti_Kac and pan-anti_Kcr antibodies were custom developed with PTM BioLab, Co., Ltd (Chicago, IL).
2011-10-06 | E-GEOD-32663 | biostudies-arrayexpress