Abstract:
:While chromatin modifications can offer a useful readout for enhancer activities, it is less clear whether these modification marks are a cause or consequence of transcription factor occupancy and enhancer activation. We have examined in details the temporal events of acetyltransferase associations and histone acetylations at different regulatory regions of the Myod1 locus. Our studies demonstrate that the histone acetyltransferase (HAT) p300 is stepwise enriched at distinct Myod1 regulatory regions during myogenic differentiation. This enrichment of p300 is associated with increased histone acetylation in a discrete pattern. Inhibition of p300 HAT activity impedes myogenic differentiation, which is coupled with decreased histone acetylation at specific Myod1 regulatory regions. We show for the first time that p300 is directly involved in the early regulation of Myod1 enhancer, and provide molecular insights into how p300 HAT activity and histone acetylation are related to enhancer activation and, consequently, gene transcription.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hamed M,Khilji S,Chen J,Li Qdoi
10.1038/srep02390subject
Has Abstractpub_date
2013-01-01 00:00:00pages
2390issn
2045-2322pii
srep02390journal_volume
3pub_type
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