Figure 6

Changes in turbidity and soluble protein concentration for NTD2 and N-R7-C in response to pH and salt. Turbidity as measured by OD340nm (left axis) over time at various pH values and salt concentrations. pH is indicated by colour: pH 5 (green), pH 6 (yellow), pH 7 (orange), pH 8 (red), as also indicated in the legend. The right axis shows protein concentration, as determined by nanodrop at OD280nm before and after the assay, shown by pH 8: squares, pH 7: upwards triangles, pH 6: downwards triangles and pH 5: circles. Error bars show the standard deviation of three replicates in both cases. Error bars show the standard deviation of three technical replicates.