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Table 3 Hydrogen-oxidizing enzyme activity in various transport mutants

From: Iron restriction induces preferential down-regulation of H2-consuming over H2-evolving reactions during fermentative growth of Escherichia coli

Straina and genotype Hydrogenase Specific activityb
(μmol H2 oxidized min-1 mg protein-1)
MC4100 2.70 ± 0.8
DHP-F2 (hypF) 0.02 ± 0.01
PM06 (feoB) 1.24 ± 1.0
CP422 (fecA-E) 2.54 ± 1.6
CP416 (entC) 2.05 ± 0.5
CP411 (entC feoB) 0.58 ± 0.4
CP415 (fecA-E entC) 1.11 ± 0.4
CP413 (entC feoB fecA-E) 0.19 ± 0.16
  1. a Cell extracts were prepared from cells grown anaerobically in TGYEP plus 15 mM formate.
  2. b The mean and standard deviation of at least three independent experiments are shown.