Suena Ji, Jeong Gu Kang, Sang Yoon Park, JooHun Lee, Young J. Oh, Jin Won Cho
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192593
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원문정보
초록
영어
The attachment of O-linked β-N-acetylglucosamine (O-GlcNAc) to proteins is an abundant and reversible modification that involves many cellular processes including transcription, translation, cell proliferation, apoptosis, and signal transduction. Here, we found that the O-GlcNAc modification pattern was altered during all-trans retinoic acid (tRA)-induced neurite outgrowth in the MN9D neuronal cell line. We identified several O-GlcNAcylated proteins using mass spectrometric analysis, including α- and β-tubulin. Further analysis of α- and β-tubulin revealed that O-GlcNAcylated peptides mapped between residues 173 and 185 of α-tubulin and between residues 216 and 238 of β-tubulin, respectively. We found that an increase in α-tubulin O-GlcNAcylation reduced heterodimerization and that O-GlcNAcylated tubulin did not polymerize into microtubules. Consequently, when O-GlcNAcase inhibitors were co-incubated with tRA, the extent of neurite outgrowth was decreased by 20% compared to control. Thus, our data indicate that the O-GlcNAcylation of tubulin negatively regulates microtubule formation.
저자
Suena Ji [ Department of Biology, Yonsei University ]
Jeong Gu Kang [ Department of Biology, Yonsei University ]
Sang Yoon Park [ Department of Biology, Yonsei University ]
JooHun Lee [ Department of Biology, Yonsei University ]
Young J. Oh [ Department of Biology, Yonsei University ]
Jin Won Cho [ Department of Biology, Yonsei University, Department of Integrated OMICS for Biomedical Sciences, Graduate School, Yonsei 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.