Abstract
Here we report a new robust nicotinamide dinucleotide phosphate cofactor analog (carba‐NADP+) and its acceptance by many enzymes in the class of oxidoreductases. Replacing one ribose oxygen with a methylene group of the natural NADP+ was found to enhance stability dramatically. Decomposition experiments at moderate and high temperatures with the cofactors showed a drastic increase in half‐life time at elevated temperatures since it significantly disfavors hydrolysis of the pyridinium‐N−glycoside bond. Overall, more than 27 different oxidoreductases were successfully tested, and a thorough analytical characterization and comparison is given. The cofactor carba‐NADP+ opens up the field of redox‐biocatalysis under harsh conditions.
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