Sang-Hyun HAN, Jeong-Min JEON, Hae-In LEE, Yoo-Won LEE, Yong-Ha IN, Chun-Feng XIN, Sung-Gun KIM, Kwan-Young KIM, Sue-Yun JUNG, Jae-Seong SO, Chung-Soon CHANG
언어
영어(ENG)
URL
https://www.earticle.net/Article/A104726
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원문정보
초록
영어
In this study we attempted to optimize conditions of purifying glutaminase from Lactobacillus reuteri KCTC3594 and to investigate the properties of the enzyme. When the cells of L. reuteri were extracted with high pressure of 15,000 psi three times, the crude extract containing supernatant showed the maximum glutaminase activity, 15.515 U/ml. Glutaminase was purified approximately 20.67-fold with a yield from the cell-free extract of L. reuteri KCTC3594 by protamine sulfate treatment and chromatography methods including anion exchange and gel filtration [1]. The sizes of a major unit and a subunit of the enzyme were presumed 45 kDa and 60 kDa, respectively, by SDS-PAGE. The enzyme activity was optimal at 40 ℃ and pH 7.5, respectively. It was shown that the glutaminase was salt-tolerant as the activity was maintained 50 % at 15 % (w/v) salt. On the other hand, the enzyme was significantly inhibited up to 80% by DON (10 mM) and iodoacetate (50 mM). The glutaminase of L. reuteri can be partially purified by previous methods and showed most of properties were similar with those of other bacteria [2]. In addition, it has high salt-tolerance. The purified glutaminase can be used in food and pharmaceutical industries.
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동