Cover design The figure shows a model of 2,5-diketo-d-gluconic acid reductase generated by the SWISS-MODEL program and based on the published crystal structure. The NADPH group (yellow with 2'-phosphate in green) has been added in its position in the crystal structure, as has the original arginine (blue). The mutant His (orange) in place of the Arg is also shown. For further details see Banta,
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