Figure 1. Kirromycin assembly line and the production of new kirromycin derivatives.
A: acyltransferase ACP: acyl carrier protein, KS: ketosynthase, DH: dehydrogenase, KR: ketoreductase, MT: methyltransferase, ER: enoylreductase, C: condensation domain, A: adenylation domain, PCP: peptidyl carrier protein, MatB: engineered malonyl-CoA synthetase (T207G/M306I), KirCII: discrete acyltransferase and R: functional group. Kirromycin (1), allyl-kirromycin (2), propargyl-kirromycin (3) and coumarin-kirromycin (4).