Histone acetyltransferase that probably regulates acetylation status of histone H3 during meiosis. Histone acetylation may influence recombination and chromosome segregation. acetyl-CoA + L-lysyl-[protein] = CoA + H(+) + N(6)-acetyl-L-lysyl-[protein] The gain-of-function mutant mcc1 (T-DNA tagging) has elongated rosette leaves, increased stem length elongation, early flowering and reduced fertility and seed number due to defects in meiosis. Belongs to the acetyltransferase family.