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Organization of two gene clusters potentially responsible for GOS metabolism in L. reuteri 6475 (MM4-1A). The predicted catabolite-responsive element (CRE)/operator region is highlighted in red, and the predicted −35 and −10 sequences of the σ70 promoter are underlined. The stop codon of lacR and the start codon of lacS are colored red and green, respectively. The lacLM gene is located 33.3 kb downstream of the lacRSA cluster in the L. reuteri ATCC 6475 genome.
