The transcriptional co-repressor SIN3A (and possibly SIN3B) can bind to the RUNX1:CBFB complex at the promoter of the MIR27A gene, encoding microRNA miR-27a (Ben-Ami et al. 2009, Herglotz et al. 2013). Binding of SIN3A (and probably SIN3B) to RUNX1 is inhibited by PRMT1-mediated arginine methylation of RUNX1 arginine residues R206 and R210 (Zhao et al. 2008). In addition to SIN3A, the RUNX1-containing transcriptional repressor complex at the MIR27A promoter also includes histone arginine methyltransferase PRMT6 and histone deacetylase HDAC1 (Herglotz et al. 2013). Dimethylation of histone H3 on lysine residue K4 (K5 when taking into account the initiator methionine), known as the H3K4me2 mark, is characteristic of nucleosomes associated with megakaryocyte specific promoters, including the MIR27A gene, prior to the onset of differentiation (Herglotz et al. 2013).
Menendez, S, Tempst, P, Xiao, A, Nimer, SD, Allis, CD, Erdjument-Bromage, H, Zhao, X, Pardanani, A, Jankovic, V, Zhang, J, Dunne, R, Gural, A, Huang, G
Groner, Y, Pencovich, N, Lotem, J, Levanon, D, Ben-Ami, O
Hussong, H, Herglotz, J, Kolodziej, S, Grez, M, Kuvardina, ON, Kumar, A, Lausen, J
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