Thioredoxin shufflease and use thereof
AssigneeRepligen Corporation
InventorsVincent P. Pigiet, James R. Rusche, Barbara J. Schuster
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Abstract
The subject invention concerns a novel enzyme named thioredoxin shufflease, means for preparing the same, and procedures for using thioredoxin shufflease to fold proteins containing disulfide crosslinks. Thioredoxin shufflease is a generic term to define enzymes which have the following characteristics: (a) contain a single reactive thiol group; (b) catalyze the exchange of disulfides in a protein undergoing the refolding process; and (c) are not consumed in the oxidation/refolding process. Specifically exemplified is a thioredoxin shufflease produced from an E. coli thioredoxin gene.
Claims10
An enzyme, thioredoxin shufflease, which is characterized by:
- (a) it is thioredoxin, or fragment of thioredoxin, wherein the Cys35 residue has been replaced with a serine residue;
- (b) it catalyzes the exchange of disulfides in a protein undergoing the refolding process;
- and
- (c) it is not consumed in the oxidation/refolding process.
Dependencies are inferred from the claim text.