Correction for Han et al., Adaptation of aerobic respiration to low O₂ environments

BIOCHEMISTRY Correction for “Adaptation of aerobic respiration to low O₂ environments,” by Huazhi Han, James Hemp, Laura A. Pace, Hanlin Ouyang, Krithika Ganesan, Jung Hyeob Roh, Fevzi Daldal, Steven R. Blanke, and Robert B. Gennis, which appeared in issue 34, August 23, 2011, of Proc Natl Acad Sci USA (108:14109–14114; first published August 15, 2011; 10.1073/pnas.1018958108).

The authors note that reference 18 appeared incorrectly. The corrected reference information appears below.

Additionally, the authors note that the legend for Fig. 1 appeared incorrectly. The figure and its corrected legend appear below. This error does not affect the conclusions of the article.

Fig. 1.

(A) Oxygen respiration by R. capsulatus (KZ1). TMPD (1 mM) was added to the cell suspension to initiate the reaction, 100 μM KCN was added to stop the reaction. The addition of 10 mM ascorbate results in the apparent resumption of oxygen respiration that does not respond to inhibitors of the respiratory chain. Hence, ascorbate was omitted from all solutions to avoid this artifact. (B and C) pH changes observed in the presence of myxothiazol with O₂ pulses to anaerobic suspensions of (B) R. capsulatus (KZ1) and (C) T. thermophilus (YC 1001). Air-saturated water (10 μL) was injected into each of the suspensions three consecutive times followed by two injections of 10 μL anaerobic 1 mM HCl. (D) The pH changes observed as in (B) for R. capsulatus except that 100 μM KCN was present. Respiration-dependent proton pumping is blocked, but the addition of HCl generates the same drop in pH as in the absence of KCN.