The Histone Variant MacroH2A1.2 is Necessary for the Activation of Muscle Enhancers and Recruitment of the Transcription Factor Pbx1

ABSTRACT: Histone variants complement and integrate histone post-translational modifications in regulating transcription. The histone variant macroH2A1 (mH2A1) is almost three times the size of its canonical H2A counterpart due to the presence of a ~25kDa evolutionarily conserved non-histone macro domain. Strikingly, mH2A1 can mediate both gene repression and activation. However, the molecular determinants conferring these alternative functions remain elusive. Here, we report that mH2A1.2 is required for the activation of the myogenic gene regulatory network and muscle cell differentiation. H3K27 acetylation at prospective enhancers is exquisitely sensitive to mH2A1.2, indicating a role of mH2A1.2 in imparting enhancer activation. Both H3K27 acetylation and recruitment of the transcription factor Pb

ORGANISM(S): Mus musculus

SUBMITTER: Hossein Zare 

PROVIDER: E-GEOD-76010 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress