Figure 2From: Source and regulation of flux variability in Escherichia coli Components of flux variability vs. glucose uptake in aerobic conditions. Black circle represents Δ int , red circle represents Δ int + Δ ext and green circle represents Δ tot = Δ int + Δ ext + Δ gro . Δ gro is the only significant component of flux variability, Δ int and Δ ext having negligible values for all the range of glucose uptakes studied (the physiological values of glucose uptake are between 0 and 10).Back to article page