The cyclic undecapeptide, cyclosporin A (CyA), one of the most valuable immunosuppressive drugs, is produced non-ribosomally by a multi-functional cyclosporin synthetase enzyme complex by the filamentous fungus Tolypocladium niveum. The various structural modifications of cyclosporins such as a regiospecific hydroxylation at N-methyl leucines lead to a dramatic changes of their bioactive spectra. A Rare Actinomycetes named Sebekia benihana was identified to be able to hydroxylate CyA at the position of 4th Nmethyl leucine. Previously, six different novel Cytochrome P450 hydroxylase (CYP) genes have been isolated from S. benihana, followed by the complete sequencing and characterization1). Since a rare actinomycetes speices including, S. benihana is not currently feasible for genetic manipulation, we tried to establish genome engineering techniques for S. benihana in order to maximize its potential as a bioconversion host of various valuable metabolites including CyA in vivo. Detailed results including interspecies conjugation, foreign gene-integration, and a targeted-gene-disruption in S. benihana will be discussed.
키워드
Sebekia benihanaCyclosporin AHydroxylation
저자
Lee MI-JIN [ Dept. of Biological Engineering, College of Engineering, Inha University ]
Kyuboem HAN1 [ Hanson Biotech Co., Ltd. 461, Jeonmin-dong,Yuseong-gu, Daejeon 305-811, Korea. ]
Kim EUNG-SOO [ Dept. of Biological Engineering, College of Engineering, Inha University ]
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
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6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동