Probable transcriptional regulator that acts as a histone acetyltransferase. Mediates the acetylation of histone H3 and H4 of target loci (e.g. FLC). Involved in an auxin-independent regulation of shoot branching and flowering time. acetyl-CoA + L-lysyl-[protein] = CoA + H(+) + N(6)-acetyl-L-lysyl-[protein] Interacts with histone H4. Expressed in leaves, buds, flowers and stems. The methyl-CpG-binding domain (MBD) functions both in binding to methylated DNA and in protein interactions. Over-methylated genomic DNA. Increased shoot branching and reduced transcription of FLC leading to early flowering, associated with a decrease in the acetylation level in histone H3 and H4 of FLC chromatin.