Thioredoxin is a small electron transport protein. The thioredoxin system consists of thioredoxin, thioredoxin-reductase and NADPH. Thioredoxin obtained from E. coli is made up of a single polypeptide chain of 108 amino acids. It has a molecular weight of 11,700. The protein contains no prosthetic group or bound metals.
Specificity
Specific for natural E. coli and recombinant thioredoxin. It may be used to identify and purify the expression of thioredoxin fusion proteins.
Immunogen
recombinant E. coli thioredoxin.
Application
Anti-Thioredoxin−Agarose antibody produced in rabbit has been used for immunoaffinity purification and immunoprecipitation of thioredoxin from bacterial lysates.
Immunofluorescence was carried out on the cerivcal cancer cell lines SiHa, CaSki, and HeLa using an antibody against the redox proteinThioredoxin.
Biochem/physiol Actions
Thioredoxin is a 11.7kDa electron transport protein that functions as a hydrogen donor during the enzymatic reduction of ribonucleotides to yield deoxyribonucleotides. The thioredoxin system is also involved in the enzymatic reductions of methionine sulfoxide and sulfate. The gene encoding E. coli thioredoxin has been cloned into several plasmids and serves as a fusion partner for the expression of other cloned genes. Hence, the system is useful for the production of soluble fusion proteins in the E. coli cytoplasm. Furthermore, in several instances, these fusion proteins fold correctly and thus display full biological activity.
Physical form
Suspension in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
Preparation Note
Prepared using antibody coupled to cyanogen bromide activated agarose at 5 mg antibody per mL resin volume.
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Thioredoxin System Regulation in the Central Nervous System: Experimental Models and Clinical Evidence
Silva-AD, et al.
Oxidative Medicine and Cellular Longevity (2014)
The involvement of the thioredoxin system in the reduction of methionine sulfoxide and sulfate.
P Gonzalez Porqué et al.
The Journal of biological chemistry, 245(9), 2371-2374 (1970-05-10)
Thioredoxin. 6. The amino acid sequence of the protein from escherichia coli B.
A Holmgren
European journal of biochemistry, 6(4), 475-484 (1968-12-05)
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