Fig. 2
From: Protein-based biorefining driven by nitrogen-responsive transcriptional machinery
Effects of ammonia assimilation on the activity of the σ54-dependent promoter. a The ammonia assimilation pathway for E. coli. GDH glutamate dehydrogenase, GS glutamine synthetase, GOGAT glutamate synthase. b Activities of the σ54-dependent promoter glnAp2 as evaluated by the fluorescence intensities for strains with disrupted ammonia assimilation pathways. Values and error bars represent the mean and the s.d. (n = 3)