Broadening substrate specificity of a chain-extending ketosynthase through a single active-site mutation.

Abstract excerpt

An in vitro model system based on a ketosynthase domain of the erythromycin polyketide synthase was used to probe the apparent substrate tolerance of ketosynthase domains of the mycolactone polyketide synthase. A specific residue change was identified that led to an emphatic increase in turnover of a range of substrates.

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