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. 2001 Dec;183(24):6999–7006. doi: 10.1128/JB.183.24.6999-7006.2001

FIG. 2.

FIG. 2

Expression of fnrNchr, fnrNd, and fixNOQPd genes in different R. etli strains. (A) Expression of fnrNchr-lacZ fusion (pOL16) in different R. etli strains cultured microaerobically. (B) Expression of the fnrNd-lacZ fusion (pOL15) in different R. etli strains grown microaerobically. Data are means obtained with three independent cultures; the error bars indicate standard deviations. (C) Expression of the fixNd-lacZ fusion (pOL10) in different R. etli strains cultured microaerobically. β-Galactosidase activities are expressed in micromoles of o-nitrophenol produced per minute per milligram of protein. FnrNchrd, double fnrN mutant.