Dap resistance-associated polymorphisms in the translated mprF gene product, lysyl phosphatidylglycerol transferase (LPGT). Bars 1 to 14 refer to transmembrane domains in which mutations were found. Superscript letters indicate reference sources as follows: a, the present study; b, Yang et al. (65); c, Mishra et al. (48); d, Friedman et al. (29); e, Julian et al. (40); f, Murthy et al. (52); and g, Pillai et al. (56a).