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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Purification and some properties of bovine liver cytosol thioltransferase.

A cytosol thioltransferase was purified 37,000-fold from bovine liver by essentially the same procedure as reported for rat liver enzyme by Axelsson et al. [1978) Biochemistry 17, 2978-2984). The purified enzyme appears to be homogeneous on sodium dodecyl sulfate (SDS)-gel electrophoresis and has a molecular weight (Mr) of 11,000, an isoelectric point (pI) of 8.1, and an optimum pH with S-sulfocysteine and GSH as substrates of 8. 5. It is specific for disulfides including L-cystine, S-sulfocysteine, ribonuclease A, trypsin, soybean kunitz trypsin inhibitor, soybean Bowman Birk trypsin inhibitor and insulin, and converts Bowman Birk trypsin inhibitor to an inactive form. The enzyme does not act as a protein : disulfide isomerase, as measured by reactivation of "scramble" ribonuclease and Kunitz soybean trypsin inhibitor. Thioltransferase activity was found in cytosol of various bovine tissues.[1]


  1. Purification and some properties of bovine liver cytosol thioltransferase. Hatakeyama, M., Tanimoto, Y., Mizoguchi, T. J. Biochem. (1984) [Pubmed]
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