The UDP-glucose: glycoprotein glucosyltransferase glycoprotein sensor, is important for cellular growth, (sUtrGeGssT )r,e sai smtainscfoel,d aendd virulence in Cryptococcus neoformans
Ki Seung Kim, Catia Mota, Eun Jung Thak, Su-bin Lee, Hyun-Ah Kang
언어
영어(ENG)
URL
https://www.earticle.net/Article/A390442
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원문정보
초록
영어
Eukaryotic cells have evolved a N-glycan-dependent endoplasmic reticulum -mediated glycoprotein quality control (ER-QC) system. The ER-QC facilitates folding and modification of secretory and membrane proteins and eliminates terminally misfolded glycoproteins through ER-associated degradation (1). UDP-glucose: glycoprotein glucosyltransferase (UGGT), a key player in ER-QC, selectively reglucosylates misfolded glycoproteins for binding to CNX or CRT lectin/chaperones (2). The human pathogenic yeast Cryptococcus neoformans has unique N-linked glycosylation pathway, in which the mature precursor N-oligosaccharides without glucose residues are linked to asparagine on proteins (3). To investigate the physiological importance of ER-QC in C. neoformans, we constructed a mutant strain lacking UGGT by deleting the gene encoding UGGT. Notably, the C. neoformans uggtΔ stain showed a delayed growth rate even at normal growth condition and severe growth defects under several stress conditions, including high temperature, ER stress, and cell wall stress. Furthermore, the C. neoformans uggtΔ strain displayed defect in the capsule formation and the melanin biosynthesis, which are representative virulence-associated factors. Our results demonstrated that the UGGT-mediated ER-QC system plays a significant role in stress resistance, virulence, and even normal cell growth of Cryptococcus neoformans.
저자
Ki Seung Kim [ Department of Life science, Chung-Ang University, Seoul, Korea ]
Catia Mota [ Department of Life science, Chung-Ang University, Seoul, Korea ]
Eun Jung Thak [ Department of Life science, Chung-Ang University, Seoul, Korea ]
Su-bin Lee [ 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)