Christian J T Bollinger

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Escherichia coli MG1655 cells expressing novel bacterial hemoglobin and flavohemoglobin genes from a medium-copy-number plasmid were grown in shake flask cultures under nitrosative and oxidative stress. E. coli cells expressing these proteins display enhanced resistance against the NO(.) releaser sodium nitroprusside (SNP) relative to that of the control(More)
Limited oxygen availability is a prevalent problem in microbial biotechnology. Recombinant Escherichia coli expressing the hemoglobin from Vitreoscilla (VHb) or the flavohemoglobin from Ralstonia eutropha (formerly Alcaligenes eutrophus) (FHP) demonstrate significantly increased cell growth and productivity under microaerobic conditions. We identify novel(More)
The use of the heterologous bacterial hemoglobin (VHb) from Vitreoscilla to enhance growth and productivity of Escherichia coli under conditions of oxygen limitation has been one of the foremost examples of metabolic engineering. Although VHb has earned its merits during the last two decades by providing enhanced physiological enhancements to organisms from(More)
The small noncoding RNA RyhB is a regulator of iron homeostasis in Escherichia coli. During iron limitation, it downregulates the expression of a number of iron-containing proteins, including enzymes of the tricarboxylic acid cycle and the respiratory chain. Because this infers a potential for RyhB to limit energy metabolism and biosynthetic capacity, the(More)
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