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. 2009 Aug 28;191(21):6555–6570. doi: 10.1128/JB.00949-09

FIG. 2.

FIG. 2.

Cluster analysis of select genes with reduced or increased transcription in flagellar regulatory mutants. (A) Patterns of expression of select genes with reduced expression in flagellar regulatory mutants. The intensity of yellow or blue represents the extent of gene induction or repression, respectively. Shown is the relative expression level of each given gene in the (left to right) flrA, rpoN, flrC, and fliA mutants. The flagellar gene clusters I, II, III, and IV are as described previously (51), and the names/functions of individual genes are denoted. wt, wild type. (B) Cluster analysis of genes with increased expression in all flagellar regulatory mutants. The intensity of yellow represents the extent of gene induction. Shown is the relative expression level of each given gene in the (left to right) flrA, rpoN, flrC, and fliA mutants. The names/functions of individual genes are denoted. (C) Refined flagellar transcription hierarchy (described in the text).