Fig. 3: TIMPKs assembly order pattern.

Many of the TIMPKs (Type 1 Modular Polyketides) are non-colinear, i.e., the order of assembly of substrates is not the same as the linear order of the modules on the PK genes. For non-colinear T1MPKs, we can identify the true order of substrates by identifying docking domains at the beginning (head) and end (tail) of modules that interact with each other. In the graph, the head and tail that are in the same color represent cognate docking domains.