Using a polyene cytochrome P450 hydroxylase (CYP)-specific genome screening strategy, Pseudonocardia autotrophica KCTC 9441 was previously determined to contain a biosynthetic gene cluster for a Nystatinlike novel polyene compound named NPP in the chromosome (1). The sequence information of an approximately 125.7 kb contiguous DNA region was completely characterized and revealed to contain a total 23 open reading frames (ORFs) involved in a nystatin-like NPP biosynthesis. It has been known that biosynthesis of secondary metabolites such as antibiotics producedby Streptomyces bspecies involves a complex regulatory network in response to nutritional and environmental factors. Among various regulatory genes, there is a family of genes called pathwayspecific regulatory genes, which control the expression of specific target antibiotic biosynthetic pathway gene cluster including a very large polyketide synthase (PKS) gene cluster. Therefore, analysis of the pathway-specific regulatory genes in the antibiotic biosynthetic gene clusters is essential for understanding the regulatory mechanisms as well as for designing strategies to construct strains with enhanced antibiotic productivity (2). Here, we describe the cloning and characterization of nppR genes, a group of NPP pathway-specific regulatory genes located at the flank region of the NPP biosynthetic gene cluster in Pseudonocardia autotrophica. The detailed characterization and their application will be further discussed.
키워드
PKSPolyenePseudonocardia
저자
Jiyoon SEO [ Dept. of Biological Engineering, Inha University, Incheon, 402-751. ]
Mijin LEE [ Dept. of Biological Engineering, Inha University, Incheon, 402-751. ]
Eungsoo KIM [ Dept. of Biological Engineering, Inha University, Incheon, 402-751. ]
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
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4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
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