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Restriction map of pAPL4.7 and pAPET-2 containing the A. chroococcum algL gene. Thin lines and open bars correspond to vector plasmid DNA and cloned DNA fragments, respectively. The coding region is represented by solid bars. A broken arrow indicates the direction of the transcription of algL. E, EcoRI; A, ApaI; B, BstXI, S, SacI; N, NdeI; EV, EcoRV. Potential algX and algI genes upstream and downstream of algL gene are indicated by solid arrow underlines.
