Abstract
Mycobacterium tuberculosis is an important global pathogen. We were interested in understanding the role of Rv0233, a proposed subunit of the class IB ribonucleotide reductase, and its role in surviving stress conditions. We constructed an in-frame, unmarked deletion strain of M. tuberculosis and characterized its growth and survival under replicating or non-replicating conditions. We confirmed previous studies that found that Rv0233 is not essential for aerobic growth or survival in the presence of nitrite. We demonstrated that the deletion of Rv0233 does not affect susceptibility to frontline tuberculosis drugs or hydrogen peroxide. The deletion strain survived equally well under nutrient starvation or in hypoxia and was not attenuated for growth in macrophages.
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