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Distribution of luxO* variants obtained in this study (open triangles) and those from previous studies in other vibrios aligned to the V. fischeri sequence (filled triangles) (53, 54, 57, 58, 60). Rectangles represent LuxO domains, including the regulatory (gray), AAA+/RpoN interaction (hatched), and DNA-binding (white) domains. The asterisk indicates a potential site of interaction with LuxU (78).
