Fig. 4From: Speed dating for enzymes! Finding the perfect phosphopantetheinyl transferase partner for your polyketide synthaseA Similarity matrix comparing the seven PPTases investigated regarding sequence identity. B Predicted 3D-structures of the PPTases, illustrating the heterogeneity in both secondary and overall tertiary structure between the investigated PPTases. The arrows indicate the sites for interaction with the ACP domainsBack to article page