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Table 5 Influence of iron transport mutations on expression of hyaA, hybO and hycA lacZ fusions

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

  β-Galactosidase specific activity in Miller Units (± standard deviation)
Strain/genotypea Φ(hyaA'-'lacZ) Φ(hybO'-'lacZ) Φ(hycA'-'lacZ)
MC4100 (wild type) 818 ± 232 52 ± 46 44 ± 9
MC4100 aerobically 12 ± 3 12 ± 3 13 ± 2
MC4100 + 15 mM formate 770 ± 535 87 ± 30 126 ± 57
DHP-F2 (ΔhypF) 620 ± 221 60 ± 27 53 ± 22
ΔfecA-E 633 ± 252 52 ± 17 41 ± 11
ΔfeoB 355 ± 96 36 ± 7 65 ± 40
ΔentC 410 ± 110 40 ± 15 33 ± 20
ΔfecA-E feoB 491 ± 139 43 ± 11 28 ± 13
ΔentC fecA-E feoB 371 ± 94 45 ± 11 35 ± 24
ΔentC feoB 574 ± 155 45 ± 21 49 ± 32
ΔentC fecA-E 340 ± 211 47 ± 12 57 ± 19
  1. a In the interest of clarity only the genotype of the strains is given. The strains used can be found in Table 6. Growth was performed under fermentative conditions in TGYEP, unless indicated otherwise.
  2. n. d.-not determined