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Predicted folding of the gut mRNA region including the 3′-end of gutR and the 5′-end of gutM. (A) Secondary structure of the wild-type P. parvulus 2.6 and L. plantarum 90 gut operons. The arrow and the G indicate that in the insert of pRCR18 G substitute to the A in the indicated position. (B) Secondary structure of the L. casei BL23 gut operon.
