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1H-NMR analysis of alginates produced in the presence and in the absence of AlgL. Alginate from Pf201ΔalgC::TnKB60 (B) contains Pf201 levels of G (32%), while alginate from Pf201ΔalgCΔalgL::TnKB60 (A) contains only 3.5% G. The residues from which each signal originates are underlined. The cells used for production of the alginates were grown in fermentors.
