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Genetic map of pGEMsrdBCA. The srdBCA operon with its own promoter region was inserted into the pGEM-T Easy vector under the direction of the lac promoter. Annealing sites of primers used for the construction of derivative vectors are indicated: a, SRDCF; b, SRDAF; c, SRDTF; d, SRDPR; e, SRDBR1; f, SRDBR2; g, SRDCR.
