Crystal structures of phosphotransferase system enzymes PtxB (IIB(Asc)) and PtxA (IIA(Asc)) from Streptococcus mutans.


Streptococcus mutans is the primary etiological agent of dental caries in man and other mammalian organisms. This bacterium metabolizes carbohydrates actively and thrives under anaerobic conditions by fermenting l-ascorbate (Asc) via the sga operon, which includes SgaT, PtxB, and PtxA. These three proteins are members of the Asc family of enzyme II (EII… (More)
DOI: 10.1016/j.jmb.2008.12.046

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