|
| Status |
Public on Jul 20, 2012 |
| Title |
H2A.Z landscapes and dual modifications in pluripotent and multipotent stem cells underlie complex genome regulatory functions |
| Organisms |
Homo sapiens; Mus musculus |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
|
| Summary |
The histone variant H2A.Z has been implicated in nucleosome exchange, transcriptional activation and Polycomb repression. However, the relationships among these seemingly disparate functions remain obscure. We mapped H2A.Z genome-wide in mammalian ES cells and neural progenitors. H2A.Z is deposited promiscuously at promoters and enhancers, and correlates strongly with H3K4 methylation. Accordingly, H2A.Z is present at poised promoters with bivalent chromatin and at active promoters with H3K4 methylation, but is absent from stably repressed promoters that are specifically enriched for H3K27 trimethylation. We also characterized post-translational modification states of H2A.Z, including a novel species dually-modified by ubiquitination and acetylation that is enriched at bivalent chromatin. Our findings associate H2A.Z with functionally distinct genomic elements, and suggest that post-translational modifications may reconcile its contrasting locations and roles.
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| |
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| Overall design |
Examination of histone variant, histone modifications and transcription machinery in 3 cell types
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| |
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| Contributor(s) |
Ku M, Koche RP, Durham T, Bernstein BE |
| Citation(s) |
23034477 |
| Submission date |
Jul 10, 2012 |
| Last update date |
Nov 19, 2022 |
| Contact name |
Kevin Dong |
| Organization name |
Dana-Farber Cancer Institute
|
| Street address |
360 Longwood Ave
|
| City |
Boston |
| State/province |
MASSACHUSETTS |
| ZIP/Postal code |
02215 |
| Country |
USA |
| |
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| Platforms (2) |
| GPL9052 |
Illumina Genome Analyzer (Homo sapiens) |
| GPL9185 |
Illumina Genome Analyzer (Mus musculus) |
|
| Samples (7)
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| Relations |
| BioProject |
PRJNA170309 |
| SRA |
SRP014186 |
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