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US 9,937,239 B2Granted
Preservation and reconstitution of cell-free protein expression systems
AssigneeThe Johns Hopkins University
InventorDavid K. Karig
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Abstract
A method of preserving a cell-free protein expression system includes preserving a cell extract with a first non-reducing sugar alcohol to provide a preserved cell extract, preserving a reaction buffer with a second non-reducing sugar alcohol to provide a preserved reaction buffer, and preserving an energy source, so that the cell extract, the reaction buffer, and the energy source are preserved separately.
Claims13
A method of preserving a cell-free protein expression system, comprising:
- extracting cellular components necessary for protein expression from a whole cell to create a cell extract;
- dissolving trehalose in the cell extract to provide a cell extract solution;
- filtering the cell extract solution or adding a first anti-fouling agent to the cell extract solution to prevent fouling of the cell extract solution;
- preserving the cell extract solution by drying the cell extract solution in an incubator to provide a preserved cell extract, wherein the preserved cell extract is stable for at least three months at 37° C. temperature;
- dissolving trehalose in a reaction buffer to provide a reaction buffer solution;
- filtering the reaction buffer solution or adding a second anti-fouling agent to the reaction buffer solution to prevent fouling of the reaction buffer solution;
- preserving the reaction buffer by drying the reaction buffer solution in an incubator to provide a preserved reaction buffer;
- and
- storing an energy source in a dry form to provide a preserved energy source,
- wherein the cell extract, the reaction buffer, and the energy source are preserved separately in a dry form and the preserved cell extract, preserved reaction buffer, and preserved energy source are components of the cell-free protein expression system.
7 more elements
Dependencies are inferred from the claim text.