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Model of LhrC4-lapB mRNA interaction. Three different sites in LhrC4, all containing a UCCC motif (green), are capable of binding to the G-rich sequence (blue) upstream of the start codon in lapB. Formation of the final sRNA-mRNA duplex involves opening of stem loop A, i.e. the 5′ side of stem A and loop A are bound to lapB mRNA. One LhrC4 molecule could potentially bind two or three lapB mRNA molecules simultaneously (not illustrated).
