Fig. 4. Laforin N163D loses the ability to interact with recognized partners.
Yeast strain THY-AP4 was transformed with the following combination of plasmids: in the left panel, plasmids expressing LexA-laforin wild type were combined with plasmids pGAD-empty or pGAD-laforin WT, in order to check dimerization; similarly plasmid expressing LexA-laforin N163D was combined with pGAD-empty or pGAD-laforin N163D. In the right panel, plasmids expressing LexA-laforin wild type or N163D were combined with and plasmids pGAD-empty, pGAD-R5, pGAD-R6 and pGAD-malin respectively. The strength of the interaction was determined by measuring β-galactosidase activity as indicated in Material and Methods. Results are the mean of at least six independent transformants in each case (bars indicate standard deviation; ***p<0.001). A representative Western blot of the proteins expressed by the different transformants (two samples of each combination) is shown in the lower panel. Western blot was analyzed with anti-LexA antibodies.