... calculated in Miller units according tothe formula: units ¼ 1000 · A420/(culture volume in ml ·incubation time in min · D600). In addition, the ability of the yeast strain HF7c (carryingHIS3 ... detection of protein-protein contacts in yeast two-hybrid systemProtein–protein interactions were assayed using threedifferent approaches. For the b-galactosidase filter assay,single colonies ... Boldyreff, B., Marin, O., Marchiori, F., Perich, J.W.,Issinger, O G., Pinna, L.A. (1992) The effect of polylysine oncasein-kinase-2 activity is in uenced by both the structure of theprotein/peptide...