FIG. 2.

Graph of LMW carbohydrate (expressed as percentage of total extracellular carbohydrate in culture) generated by the addition of ExsH to cultures of glycanase-deficient strains versus the total amount of extracellular carbohydrate that had accumulated in cultures of these strains after 4 days of incubation. Note that approximately 97% of the total extracellular carbohydrate is succinoglycan. exoK exsH strain, open squares; exoZ exoK exsH strain, solid squares. ExsH was added to cultures gradually over the course of 4 days to the final, physiologically relevant concentration of 200 ng/ml.