Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)
- Volume 21 Issue 6
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- Pages.725-730
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- 1992
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- 1226-3311(pISSN)
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- 2288-5978(eISSN)
Purification of Internal Invertase in Rhodosporidium toruloides Mating Type A Cells
Rhodosporidium toruloides의 접합형 A 세포내 Invertase의 정제
- Jeong, Yong-Kee (Dept. of Microbiology, Dong Eui University) ;
- Ryu, Beung-Ho (Dept. of Food Science and Technology, Kyung Sung University)
- Published : 1992.12.01
Abstract
The internal invertase was purified from cell free extract of Rhodosporidium toruloides IFO 0559-M-919 by acid precipitation, ion-exchange chromatography and gel filtration to the unique enzyme protein on disc electrophoresis. We have found out that molecular weight of purified internal invertase was 90,000 by gel filtration and the purified enzyme was protein with 4 homogeneous subunits appearing as single band of 22,000daltons on SDS-polyacrylamide gel electrophoresis.
이담자 효모균 Rhodosporidium toruloides의 mating type A 세포에서 세포내 invertase를 정제하였다. 세포내 invertase는 배양 세포의 파쇄액을 산침전 시킨 후 그 상등액으로부터 DEAE-Sephadex A-50, SP-Sephadex C-50 column chromatography와 Sephadex G-200 gel fitration 등의 과정을 거쳐 polyacrylamide gel disc 전기영동상 단일 효소 단백질까지 정제되었다. 정제효소의 분자량은 gel filtration에 의하여 90,000이었고, SDS-PAGE상에서는 22,000 dalttons에서 단일 band를 보여 단일종의 subunit가 4개로 구성된 단백질로 추정된다.