Fig. 4From: Engineering the acyltransferase domain of epothilone polyketide synthase to alter the substrate specificitySequence alignment of EPOAT3 and EPOAT4. The residues in the EPOAT3 domain from module 4 of the MMR2029 mutant that are labelled by black arrows were mutated to the corresponding residues of the EPOAT4 domainBack to article page