Metagenomics promises to provide new enzymes with diverse functions, however, current methods for the screening and cloning of novel metagenome-derived genes are limited to the examination of halo on solid media or well-plate assay. In this study, we developed a new platform for the screening of diverse enzyme genes from metagenome using a synthetic genetic circuit, based on the recognition of phenol derivatives, which are produced from aromatic substrates by many enzyme reactions. The phenol derivatives activates a transcriptional factor, DmpR, to express a fluorescent reporter gene, resulting in fluorescence emission. In cells harboring this genetic circuits, enzyme activities, such as those of tyrosine phenol-lyase, lipase, cellulase, and methyl parathion hydrolase, were detected by the fluorescence emitted. Finally, by applying the screening method to metagenome libraries, a novel phosphatase was successfully isolated using flow cytometry. These results show that phenol-mediated genetic enzyme screening system (GESS) is a widely applicable tool for high throughput and quantitative screening of diverse enzymes from the genetic pools.
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