Abstract
A gene has been identified that underpins the capacity of mycobacterial cells to divide to produce physiologically different daughter cells. This finding has implications for drug treatment of tuberculosis. See Letter p.153 Here the authors report the discovery of a new protein (LamA) that functions as part of the 'divisome' in mycobacteria. The authors report that LamA functions as an inhibitor of cell wall synthesis at the nascent cell pole, contributing to asymmetry in polar growth. Asymmetric growth and division increases population heterogeneity, which has been linked to antibiotic tolerance and persistent infection. Here they show that removal of LamA leads to a more uniform cell population that is more effectively killed by antibiotics. Thus, LamA represents a much-needed new target for the development of anti-tuberculosis therapies.
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