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Affinity gel electrophoresis of different CBM mutations in Pm25. The control gel on the left lacks ligand, while the right one is with 0.06% (mol/vol) RAX. (A) Differential retardation of CBM4-1 (M8) and its mutants, CBM4-1 Y213A, Q216A, N218A, Y257A, W259A, and N261A. The Kd values for each construct are on the right. (B) Differential retardation of CBM4-2 (M9) and its mutants, CBM4-2 Y378A, Q381A, N383A, Y422A, and W424A. The Kd values for each construct are on the right.
