Bo-Hyun KIM, Soo-Wan NAM, Yeon-Hee KIM, Yi-Joon KIM, Kwang-Hee SON, Ho-Yong PARK
언어
영어(ENG)
URL
https://www.earticle.net/Article/A197951
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원문정보
초록
영어
Xylan is the major component of plant biomass and polysaccharide made from units of xylose. Hydrolysis of xylan is considerable interest for various biotechnological applications. To efficiently and stably hydrolyze xylan, the endoxylanase from Bacillus sp. was cloned and expression plasmid, pRSδ-xylp (YIp type) was constructed. This plasmid contains MFαsignal sequence for secretory expression of endoxylanase and δ-sequence for target integration. The pRSδ-xylp was transformed into Saccharomyces cerevisiae SEY2102△trp and the endoxylanase activity reached 4.4 unit/㎖ and the mitotic stability was 100%. The pRSδ-xylp was sequentially transformed in SEY2102△trp/pRSδ-xylp transformant by selective marker rescue and repeated integration and the endoxylanase activity was sequentially increased to 5.7unit/㎖. To examine the integration position and copy number of xylp gene, PFGE and southern hybridization were conducted. The xylp gene was integrated into Chr Ⅱ,Ⅳ,Ⅴ,Ⅶ,Ⅷ,Ⅻ andⅩⅣ of yeast and most of xylp gene was specially concentrated in Chr Ⅴand Ⅷ by multiple integration. The copy number was also increased with the endoxylanase activity increase. These results suggested that the endoxylanase from Bacillus sp. was stably expressed and the enzyme activity was sequentially increased by using multiple genome integration.
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