Bo-Ra Kwon, Jung-Mi Kim, Hwan-Gyu Kim, Seung-Moon Park, Dae-Hyuk Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A99938
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원문정보
초록
영어
Cryparin is an abundant cell wall-associated hydrophobin of the chestnut blight fungus, Cryphonectria parasitica. Although cryparin is encoded as a single copy gene (Crp), it isthe most abundant protein produced by this fungus when grown in liquid culture1), 2). As the results of previous studies to characterize the transcriptional regulatory element(s) for strong expression and hypoviral regulation, it was suggested that the fragment between nt -188 and the translation start codon appeared to be a minimal but sufficient promoter element for the efficient expression of the cryparin gene. To examine whether this small fragment is necessary and sufficient for a high level expression of the fungal gene, three different chimeric reporter genes using ORF’s of a hygromycin B resistance gene (hph), an inducible laccase (lac3) of C. parasitica and glucose oxidase (Go) of Aspergillus niger were tested3),4). When using the hphgene as a reporter gene, more than 1,000 stable transformants were obtained indicating that the 188 bp-fragment is comparable to that of trpC promoter of A. nidulans. When using the endogenous lac3 gene as a reporter gene, which requires the presence of tannic acid forthe transcriptional induction, the lac3 transcript was observed without any induction by tannic acid. In addition, glucose oxidase as a secretory protein was also tested for the expression. The enzymatic level of recombinant C. parasitica was within a range of two to threefold more than that of A. niger. These high expression levels were further confirmed by real-time PCR as well as comparison to other promoter. Moreover, the 188 bp-fragment was also examined for the promoter activity in other fungus Cochliobolus heterostrophus. Transformation of C. heterostrophus to hygromycin B resistance was successful indicating that this fragment can be applied as a strong promoter for various fungal biotechnology.
저자
Bo-Ra Kwon [ Chonbuk National University ]
Jung-Mi Kim [ Research Center of Bioactive Materials ]
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