Fig. 2From: Activation of formate hydrogen-lyase via expression of uptake [NiFe]-hydrogenase in Escherichia coli BL21(DE3)H2 production in FHL-deficient mutant BL21(DE3) strains. Strains lacking formate dehydrogenase-H or hydrogenase-3 were used. H.ma, Hydrogenovibrio marinus; R.sp, Rhodobacter sphaeroides; E.co, Escherichia coli; (−), negative control mutant with parental empty vector (pTrcHis C); (+), positive control strain with R. sphaeroides HupSLBack to article page