Parasites, Hosts and Diseases
- Volume 34 Issue 1
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- Pages.49-58
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- 1996
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- 2982-5164(pISSN)
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- 1738-0006(eISSN)
Characterization of the partially purified proteinase from Trichomonas vaginalis
질편모충으로부터 부분정제한 단백질 분해효소의 특성
- Min, Deuk-Yeong (Department of Parasitology, College of Medicine, Hanyang University) ;
- Ryu, Jae-Suk (Department of Parasitology, College of Medicine, Hanyang University) ;
- Hyeon, Geun-Hui (Department of Parasitology, College of Medicine, Hanyang University)
- Published : 1996.03.01
Abstract
Characterization of a purified proteinase from T4chomoncs uoginalis was carried out using bacitracin-sepharose affinity chromatography. Trichomonos uqginolis KT-9 isolate was used as a source of eye study Proteinase activity was determined using Bz-Pro- Phe-Arg-Nan as the substrate. Optimum pH for the purified proteinase activity was 7.0 and 6.0, 9.0 with DTT. Optimum temperature was 37℃ and isoelectric point was 7.2 Activity of this proteinase was inhibited by E-64, antipain, leupeptin, Hg2+ and Zn2+ and activated by DTT and cysteine. Activity of the purified proteinase was visualized by gelatin SDS- PAGE. The gelatinolytic activity of the purified proteinase was inhibited by E-64, antipain, leupeptin, and IAA, but not by PMSF and EDTA. On SDS-PAGE, the molecular weight of the purified proteinase was 60,000 daltons. Sera of rabbits infected with T. vaginalis reacted specifically in immunoblots with this proteinase. These results indicate that 60 kDa of purified proteinase was cysteine proteinase with antigenicity.
이 연구에서는 질편모충의 단백질 분해효소를 부분정제하고 그 특성을 관찰하였다. 질염환 자에서 얻은 질편모충 분리주 KT-9을 sonicator로 분쇄 원심분리하여 상청액을 얻어 bacitracin-sepharose affinity chromatography로 부분정제하였고 합성기질 인 Bz-Pro-Phe-Arg-Nan로 효소의 활성을 측정하였다. 정제한 효소는 pH 7에서 최적 활성을 보였고 Dn를 넣었을 때에는 pH 6 및 pH 9이었다. 최적 온도는