Ji-Hye AN, Youngsoon UM, Byoung-In SANG, Yong-Hwan KIM
언어
영어(ENG)
URL
https://www.earticle.net/Article/A104800
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원문정보
초록
영어
Effective immobilized techniques provide a great improvement on the stabilization of enzyme activity. In this study, biosilicification catalyzed by the silaffin R5 peptide from marine diatom Cylindrotheca fusiformis was investigated for the feasible evaluation of enzyme immobilization and stabilization. Glutathione S-transferase (GST) as the model enzyme was used, and GST and R5 tagged GST gene (GSTR5, R5-GST-R5) were amplified by PCR and inserted into the pET-28 a(+) vector for the expression in Escherichia coli BL21(DE3). Biosilicification was performed by adding tetramethoxysilane (TMOS) to R5 tagged proteins, which resulted in silica particle precipitation at ambient temperature and pressure in vitro. The silica nano-beads (about 200 nm in diameter) retained high GST activity. Loading efficiency (percent of enzyme with precipitated silica) and immobilization yield of R5 tagged GSTs (GST-R5, R5-GST-R5) increased as pH decreased. Maximum loading efficiency (95.48%) and immobilization yield (67.54%) with R5-GST-R5 at pH 6.0 were observed, which were higher than those with GST-R5.
키워드
Enzyme immobilizationBiosilificationR5 peptide
저자
Ji-Hye AN [ Korea Institute of Science and Technology, Seoul 136-791. ]
Yong-Hwan KIM [ Dept. of Chemical engineering, Kwangwoon University, Seoul 139-701. ]
Youngsoon UM [ Korea Institute of Science and Technology, Seoul 136-791. ]
Byoung-In SANG [ Korea Institute of Science and Technology, Seoul 136-791. ]
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