Based on studies in rat neurons, the NF-Y transcription factor complex (composed of NFYA, NFYB and NFYC) and histone acetyltransferases EP300 (p300) and/or CREBBP (CBP) constitutively bind to evolutionarily conserved sites in the promoter of the BCL2L11 (BIM) gene (Hughes et al. 2011).