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Structure. 2010 Feb 10;18(2):151-3. doi: 10.1016/j.str.2010.01.006.

TPR motifs: hallmarks of a new polysaccharide export scaffold.


Bacteria produce a remarkable range of surface and secreted polysaccharides. Two pathways have been defined for the biosynthesis and export of capsular polysaccharides and exopolysaccharides in Gram-negative bacteria. A structure of AlgK described in this issue provides structural insight into a third previously unrecognized pathway associated with important biopolymers (Keiski et al., 2010).

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