Catia Isabel Almeida Mota, Eun Jung Thak, Hyun Ah Kang
언어
영어(ENG)
URL
https://www.earticle.net/Article/A390443
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원문정보
초록
영어
Eukaryotes evolved a N-glycan-dependent endoplasmic reticulum (ER)-associated degradation (ERAD) pathway to monitor protein folding (1). Specific mannose trimming of the protein-bound oligosaccharide is essential for degradation of misfolded proteins (2). The human-pathogen Cryptococcus neoformans has a unique N-linked glycosylation pathway lacking glucosyltransferases but carrying multiple mannosidases (3). To investigate the molecular assembly of C. neoformans specific-ERAD pathway and its impact on pathogenicity, we disrupted the homologue genes to MNS1 (MNS1A and MNS1B), MNL1 and MNL2. The N-glycan profiles indicated MNS1A and MNS1B as a major and minor α-mannosidases, respectively. Whereas the double deletion of MNS1A and MNS1B generated mild growth retardation under several stress conditions, the simultaneous deletion of MNL1 and MNL2, encoding putative ERAD-associated mannosidases, resulted in hypersensitivity to ER, cell wall and osmostress. Notably, it also showed rather increased resistance to high temperature, caffeine and fluconazole. In vitro analysis of virulence factors revealed reduced capsule mass in all the constructed mutants, suggesting attenuation of virulence. Interestingly, mnl1Δmnl2Δ cells did not survive in capsule-inducing media, implying an essential role of the ERAD pathway under specific growth conditions. Overall, our results show the importance of ERAD pathway in protein quality control system for C. neoformans survival and virulence.
저자
Catia Isabel Almeida Mota [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
Eun Jung Thak [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
Hyun Ah Kang [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
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 2020 한국당과학회 연례학술대회(온라인)