Fig 5. Influence of compounds on the oligomeric state of BcGR.
Determination of the oligomerization state of BcGR in the presence of substrate and (1) or (2) complexes was confirmed by BN gel electrophoresis and chemical cross-linking analyses. In both cases protein samples (84 μM, in a final volume of 500 μl) were incubated with compounds in the ratio of molar concentration of protein (1:4) and in the presence of 30 mM D-Glu and loaded on a Superdex 75 10/300 GL column (Panels A and B show a magnification of the run, represented in the insets). Fractions corresponding to absorbance peaks were then analyzed by BN gel electrophoresis (C) and chemical cross-linking (D). The arrows indicate monomeric (1) and dimeric (2) oligomeric species.