Isolation and Characterization of wblA-dependent Potential Target Genes Identified from Comparative Transcriptome Analysis Involved in Streptomyces Doxorubicin Overproduction
Jun-Hee NOH, Seon-Hye KIM, Han-Na LEE, Eung-Soo KIM
언어
영어(ENG)
URL
https://www.earticle.net/Article/A104710
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
영어
wblA (SCO3579) is a pleiotropic down-regulator of antibiotic biosynthesis in Streptomyces species, as well as modulates morphological differentiation (Kang et al. 2007). Although wblA is notable pleiotropic down-regulator in valuable secondary metabolite production, these regulatory networks are still largely unknown. In this study, total cosmid DNA library screening in doxorubicin (DXR)-producing S. peucetius resulted in the isolation of S. peucetius wblA gene (named wblA-spe). To examine biological significance of the wblA-spe on DXR production, the wblA-spe was disrupted from the chromosome of DXRoverproducing S. peucetius strain by PCR-targeting system, followed by quantitative DXR HPLC analysis. After the wblA-spe gene disruption, biosynthesis of DXR and DXR intermediate aklavinone were slightly enhanced. Furthermore, using Streptomyces interspecies DNA microarray analysis between the DXR high-producer S. peucetius strain and wblA-spe disruption mutant strain, several putative wblA-dependent genes were identified. To verify the biological significance of this comparative transcriptomics-guided targets, the five putative wblA-dependent target genes were individually cloned under the strong-and constitutive promoter(PermE*) of the Streptomyces integrative expression vector, followed by conjugation into S. coelicolor. Among the putative wblA-dependent genes tested, the overexpression of NADH dehydrogenase subunit, (SCO4571) conserved hypothetical protein (SCO4967), and putative oxidoreductase beta-subunit (SCO6569) in S. coelicolor enhanced biosynthesis of actinorhodin about 1.5-2-fold relative to that of S.coelicolor exconjugant harboring the empty vector alone. More detailed results will be discussed.
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