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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Cell-free synthesis of polyketides by recombinant erythromycin polyketide synthases.

Modular polyketide synthases (PKSs) are complex multi-enzyme proteins that catalyse the bacterial biosynthesis of many pharmaceutically useful polyketides. The PKSs are organized into a series of modules, each containing the active catalytic sites required for one step in the synthesis process. Here we report a method for cell-free enzymatic synthesis of 6-deoxyerythronolide B (6-dEB), the parent molecule of the antibiotic erythromycin A, using recombinant 6-deoxyerythronolide B synthase (DEBS), a modular PKS with at least 28 distinct active sites. We have also synthesized in vitro a triketide lactone by using a truncated mutant of DEBS. The availability of such cell-free synthetic routes will allow direct investigation of the structural and mechanistic basis for the unusual combination of high substrate specificity and tolerance to genetic reprogramming found in this enzyme family.[1]

References

  1. Cell-free synthesis of polyketides by recombinant erythromycin polyketide synthases. Pieper, R., Luo, G., Cane, D.E., Khosla, C. Nature (1995) [Pubmed]
 
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