A tetrameric protein complex capable of acetyltransferase activity. It can catalyze the transfer of an acetyl group from acetyl-CoA to an acceptor residue on histone H-3, histone H-4, or on polyamines. The complex is also capable of acetylating certain small basic proteins. The two Hpa2 dimers that make up the tetramer are held together by interactions between the bound acetyl-CoA molecules.
Hpa2 acetyltransferase complex