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General overview on the effect of inserting additional copies of rfaH in E.coli K4. It shows that overexpression of rfaH leads to higher production of capsular polysaccharide that is probably due to an increase of expression of the genes belonging to region 2; in particular the mRNA levels of kfoA and kfoC were analysed in this study. The figure also indicates that rfaH overexpression increases lipopolysaccharide production.
