Carboxymycobactin is the more polar siderophore of Mtb and it is localized, after its secretion, in the phagosomal lumen. The transporters for export and secretion of this molecule are still unknown (Madigan et al. 2012).
Madigan, CA, Cheng, TY, Layre, E, Young, DC, McConnell, MJ, Debono, CA, Murry, JP, Wei, JR, Barry CE, 3rd, Rodriguez, GM, Matsunaga, I, Rubin, EJ, Moody, DB
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