Schematic diagrams of the genomic regions encompassing algQ homologues in P. aeruginosa PAO1, P. putida KT2440, P. syringae pv. tomato strain DC3000 (P. syringae DC3000), P. fluorescens PfO-1, and A. vinelandii. The designations of characterized and putative genes are indicated at the top. ABCt, ATP-binding transporter; algP, gene encoding the alginate regulatory protein; fkbP, gene encoding the peptidyl-prolyl cis-trans isomerase; algQ, gene encoding a regulatory protein; dsbH, gene encoding the DsbH family protein; hemY, gene encoding the HemY putative protein; hemX, gene encoding the uroporphyrin III C-methyltransferase; hemD, gene encoding the uroporphyrinogen III synthetase; hemC, gene encoding the porphobilinogen deaminase; algR, gene encoding a regulatory protein. Orthologues are indicated by the same pattern. The triangles indicate the direction of transcription. Annotation numbers of hypothetical open reading frames are indicated. The level of protein identity relative to P. aeruginosa PAO1 is indicated below each open reading frame.