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There is no correlation between the pI and measured binding capacity to lignin surfaces for the investigated proteins. pI values were averaged for enzymes with multiple bands in the IEF gels to obtain single pI values to compare with adsorbed mass values. The error bars for total adsorbed mass for each protein are given in Table 2 because they are so small relative to the differences in total adsorbed mass that they are not visible in the graph.
