Diminishing returns and tradeoffs constrain the laboratory optimization of an enzyme
Optimization processes, such as evolution, are constrained by diminishing returns - the closer the optimum, the smaller the benefit per mutation, and by tradeoffs - improvement of one property at the cost of others. However, the magnitude and molecular basis of these parameters, and their effect on evolutionary transitions, remain unknown. Here we pursue a complete functional transition of an enzyme with a >109-fold change in the enzyme's selectivity using laboratory evolution. We observed...[Show more]
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