BMB Reports
- Volume 32 Issue 6
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- Pages.535-540
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- 1999
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- 1976-670X(eISSN)
A Second Thioltransferase of Schizosaccharomyces pombe Contains Glutathione S-transferase Activity
- Kim, Hong-Gyum (Division of Life Sciences, Kangwon National University) ;
- Park, Eun-Hee (College of Pharmacy, Sookmyung Women's University) ;
- Lim, Chang-Jin (Division of Life Sciences, Kangwon National University)
- Published : 1999.11.30
Abstract
Two types of the thioltransferase (also called glutaredoxin) have been previously detected in the cytosolic extract of Schizosaccharomyces pombe, a fission yeast. Previously, the one with a smaller molecular mass (14kDa) was purified and characterized. In the present study, the second thioltransferase was purified. The purification procedure included ammonium sulfate fractionation (40-80%), Sephadex G-200 gel filtration, DEAE-cellulose ion-exchange chromatography, Sephadex G-50 gel filtration, and glutathione-agarose affinity chromatography. The purified enzyme showed a single band on SDS-PAGE, and its molecular mass was determined to be 23 kDa. It utilizes various compounds as substrates, including 2-hydroxyethyl disulfide. Interestingly, we found that the purified thioltransferase also contains significant glutathione S-transferase activity.