2008 Eastern Asian Glycoscience Symposium (2008.11)바로가기
페이지
pp.54-55
저자
Seon Ah Cheon, Jeong-Nam Park, Doo-Byoung Oh, Ohsuk Kwon, Hyun Ah Kang
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192325
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원문정보
초록
영어
We have previously shown that the glycoengineered methylotrophic yeast Hansenula polymorpha strains, the Δoch1 and Δoch1Δalg3 double deletion strains, with the targeted expression of Aspergillus saitoi α-1,2-mannosidase in the ER, were able to produce human mannose-type N-glycans (Man5GlcNAc2 or core Man3GlcNAc2)1, 2. Here we report the further modification of yeast glycosylation pathway to synthesize the complex-type N-glycans with a terminal N-acetyl glucosamine in both the glycoengineered ΔHpoch1 and ΔHpoch1 ΔHpalg3 strains, respectively. First, several combinatorial synthetic leaders were constructed to localize efficiently active human β -1,2 N-acetyl glucosaminyl transferase I (GnT I) in the Golgi apparatus of yeast. The short, medium, and long N-terminal leader sequences with the various length of stem region of yeast type II membrane proteins (ScMnn9, HpOch1, and HpOcr1), located in the early Golgi compartment, were fused in-frame to the catalytic domain of human GnT I lacking its own N-terminal leader sequence. The GnT I constructs combined with various yeast N-terminal leader sequences were introduced into the H. polymorpha och1 and och1 alg3 strains carrying the ER-targeted α-1,2 mannosidase, and the obtained transformants were screened for proper localization of GnT1 into the Golgi compartment by the size fractional centrifugation and Western blotting. Subsequently, the production of the complex-type glycans with monoantennary N-acetyl glucosamine was analyzed by a capillary electrophoresis of ATPS-labeled cell wall glycans. Our data strongly suggested that the ΔHpoch1 single deletion strain would be a better host for the production of human complex-type N-glycans than the ΔHpoch1 ΔHpalg3 double deletion strain in the respect of the glycosylation site occupancy and the byproduct Hex6GlcNAcs formation.
저자
Seon Ah Cheon [ Department of Life Science, College of Natural Science, Chung-Ang University ]
Jeong-Nam Park [ Department of Life Science, College of Natural Science, Chung-Ang University ]
Doo-Byoung Oh [ Omics & Integration Research Center, Korea Research Institute of Bioscience and Biotechnology ]
Ohsuk Kwon [ Omics & Integration Research Center, Korea Research Institute of Bioscience and Biotechnology ]
Hyun Ah Kang [ Department of Life Science, College of Natural Science, Chung-Ang University ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.
간행물
간행물명
한국당과학회 학술대회
간기
연간
수록기간
2006~2022
십진분류
KDC 517DDC 614
이 권호 내 다른 논문 / 한국당과학회 학술대회 2008 Eastern Asian Glycoscience Symposium