Cellulose Acetate

Images ● Results ● Methods ● References ● BioBricks

The goal of this subproject is to engineer Gluconacetobacter hansenii, which produces large quantities of bacterial cellulose (BC), to use the acetylation machinery found in the wrinkly spreader isolate SBW25 of Pseudomonas fluorescens to produce bacterial cellulose acetate (BCOAc) towards its ultimate application as the foundation of a fully biological UAV. Industrially-produced cellulose acetate has many uses as a synthetic fiber and has advantages over pure BC in terms of material properties. However, its production presents some issues in that it requires harsh chemical processes, making the biological manufacturing method highly valuable. Using directed evolution, we plan to select for those organisms which produce the polymer with highest acetate content. In addition, we seek to create a fusion protein which will have the capacity to both cross-link BCOAc polymers (improving material properties) and allow the modular addition of any cell (e.g. a biosensor). This will be accomplished through the expression of a biotinylated membrane protein, through the protein’s streptavidin domain, making the UAV highly programmable.

Results

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Methods & Safety

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Click here to download our project journal, which details our design and engineering process and included descriptions of the protocols we developed and used.

Links & References

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