TABLE 1.

Oxygen uptake by washed cell suspensions of homoacetogenic bacteria in the presence and in the absence of hydrogen

Headspace gasO2 uptake rates (nmol min−1 mg of protein−1)a
Strain TmAO3S. termitidaA. longumA. woodii
H2b843 ± 95 (n = 9)181 ± 52 (n = 5)209 ± 21 (n = 6)138 ± 14 (n = 6)
N217 ± 14 (n = 5)32 ± 5 (n = 3)181 ± 33 (n = 5)14 ± 9 (n = 3)
  • a All cultures were grown in reduced medium on H2-CO2. The values are means ± standard deviations for several replicates with at least two different cell suspensions.

  • b The basal rates of O2 consumption under an N2 headspace were not subtracted.