- Expression levels of the yeast alcohol acetyltransferase genes ATF1, Lg-ATF1, and ATF2 control the formation of a broad range of volatile esters. Verstrepen, K.J., Van Laere, S.D., Vanderhaegen, B.M., Derdelinckx, G., Dufour, J.P., Pretorius, I.S., Winderickx, J., Thevelein, J.M., Delvaux, F.R. Appl. Environ. Microbiol. (2003)