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| Status |
Public on Jul 16, 2012 |
| Title |
Histone variant H2A.Bbd is associated with active transcription and mRNA processing in human cells [ChIP-Seq] |
| Organism |
Homo sapiens |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
|
| Summary |
Variation in chromatin composition and organization often reflects differences in genome function. Histone variants, for example, replace canonical histones to contribute to regulation of numerous nuclear processes including transcription, DNA repair and chromosome segregation. Here we focus on H2A.Bbd, a rapidly evolving variant found in mammals but not in invertebrates. We report that in human cells, nucleosomes bearing H2A.Bbd form unconventional chromatin structures enriched within actively transcribed genes and characterized by shorter DNA protection and nucleosome spacing. Analysis of transcriptional profiles from cells depleted for H2A.Bbd demonstrated widespread changes in gene expression with a net down-regulation of transcription and disruption of normal mRNA splicing patterns. In particular, we observed changes in exon inclusion rates and increased presence of intronic sequences in mRNA products upon H2A.Bbd depletion. Taken together, our results indicate that H2A.Bbd is involved in formation of a specific chromatin structure that facilitates both transcription and initial mRNA processing.
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| Overall design |
Nuclei were digested with Mnase and histone-DNA complexes were isolated with antibody.
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| Contributor(s) |
Tolstorukov MY, Goldman JA, Gilbert C, Ogryzko V, Kingston RE, Park PJ |
| Citation(s) |
22795134 |
| Submission date |
May 27, 2012 |
| Last update date |
May 15, 2019 |
| Contact name |
Peter J Park |
| E-mail(s) |
peter_park@harvard.edu
|
| Phone |
617-432-7373
|
| Organization name |
Harvard Medical School
|
| Department |
Center for Biomedical Informatics
|
| Street address |
10 Shattuck St
|
| City |
Boston |
| State/province |
MA |
| ZIP/Postal code |
02115 |
| Country |
USA |
| |
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| Platforms (1) |
| GPL9052 |
Illumina Genome Analyzer (Homo sapiens) |
|
| Samples (5)
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| This SubSeries is part of SuperSeries: |
| GSE38771 |
Histone variant H2A.Bbd is associated with active transcription and mRNA processing in human cells |
|
| Relations |
| SRA |
SRP013411 |
| BioProject |
PRJNA167547 |
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