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Genetic organization of tol-oprL cluster and lacZ fusion constructs of the tol-oprL genes. DNA fragments of the tol-oprL region are shown as solid bars. The relevant restriction sites, fur box, and putative terminator are indicated. The promoterless lacZ gene is shown by the arrowhead bars; the transcriptional terminator from pHP45Ω is represented by a circled cross. Only the fragments upstream of lacZ are shown in the diagram of the fusion constructs.
