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Naturally occurring enzyme homologues often display highly divergent activity with non‐natural substrates. Exploiting this diversity with enzymes engineered for new or altered function, however, is laborious because the engineering must be replicated for each homologue. A small set of mutations of the tryptophan synthase β‐subunit (TrpB) from Pyrococcus furiosus, which mimics the activation afforded...
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