Molecular characterization of the poly(3-hydroxybutyrate) (PHB) synthase from Ralstonia eutropha: in vitro evolution, site-specific mutagenesis and development of a PHB synthase protein model.

Abstract excerpt

A threading model of the Ralstonia eutropha polyhydroxyalkanoate (PHA) synthase was developed based on the homology to the Burkholderia glumae lipase, whose structure has been resolved by X-ray analysis. The lid-like structure in the model was discussed. In this study, various R. eutropha PHA synthase mutants were generated employing random as well as site-specific mutagenesis. Four permissive mutants (double and...

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