Figure 4. Probing the donor specificity of WT OleD and mutant prodigy.
(A) The set of UDP-sugar donors used to probe specificity. Dashed-boxed donors were detectable substrates for both WT and mutant P67T/I112T/A242V OleD, while solid boxed donors were substrates only for P67T/I112T/A242V. (B) Successful conversion rates (%) after 3 h with WT or P67T/I112T/A242V OleD using 50 μM acceptor 1 and 250 μM UDP-sugar donors (the reactions containing 28 were incubated for 18 h). (C) Improvement of donor promiscuity with increasing proficiency of OleD variants.