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Superposition of residues 224, 254, and 280 of TbADH and of the quadruple mutant of CbADH. The side chains of Glu224, Lys254, and Glu280 of TbADH (in magenta) and of the quadruple mutant of CbADH (in green) are shown in an orientation similar to that presented in Figure 5 ▶. The figure was prepared using the program O (Jones and Kjeldgaard 1997).
