- ACGT and vicilin core sequences in a promoter domain required for seed-specific expression of a 2S storage protein gene are recognized by the opaque-2 regulatory protein. Vincentz, M., Leite, A., Neshich, G., Vriend, G., Mattar, C., Barros, L., Weinberg, D., de Almeida, E.R., de Carvalho, M.P., Aragão, F., Gander, E.S. Plant Mol. Biol. (1997)