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Chemically modified carbonic anhydrases useful in carbon capture systems

United States Patent

January 15, 2013
View the Complete Patent at the US Patent & Trademark Office
The present disclosure relates to chemically modified carbonic anhydrase polypeptides and soluble compositions, homogenous liquid formulations comprising them. The chemically modified carbonic anhydrase polypeptides have improved properties relative to the same carbonic anhydrase polypeptide that is not chemically modified including the improved properties of increased activity and/or stability in the presence of amine compounds, ammonia, or carbonate ion. The present disclosure also provides methods of preparing the chemically modified polypeptides and methods of using the chemically modified polypeptides for accelerating the absorption of carbon dioxide from a gas stream into a solution as well as for the release of the absorbed carbon dioxide for further treatment and/or sequestering.
Novick; Scott (Palo Alto, CA), Alvizo; Oscar (Fremont, CA)
Codexis, Inc. (Redwood City, CA)
13/ 174,253
June 30, 2011
2. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under DE-AR0000071 awarded by the Department of Energy. The Government has certain rights in this invention.