Actinobacterial bacteria. These genes are often clustered withone or both types of whiJ-associated genes. Most mycelial actinomycetes have two or three WhiJ paralogues, but K. setae has five, and all streptomycetes have more than 10, sometimes more than 20. Phylogenetic analysis of WhiJ paralogues from four well-studied streptomycetes is shown in Fig. 7. The branching pattern is consistent with un