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Organization of bacterial lux genes in V. salmonicida (Vs) and V. fischeri (Vf). VCA represents homologs of the genes for the V. cholerae VCA0181 protein (21) and the V. fischeri VFA0926 protein (36). ribG is a riboflavin synthesis gene (24). Unless indicated otherwise by an arrow, ORFs are predicted to be transcribed from left to right. Black and gray highlighting denotes ORFs corresponding to luciferase genes and lux regulatory genes, respectively (27, 29).
