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题名: Dynamics of the Lipid Droplet Proteome of the Oleaginous Yeast Rhodosporidium toruloides
作者: Zhu, Zhiwei1;  Ding, Yunfeng2;  Gong, Zhiwei1;  Yang, Li2;  Zhang, Sufang1, 3;  Zhang, Congyan2;  Lin, Xinping1;  Shen, Hongwei1, 3;  Zou, Hanfa1;  Xie, Zhensheng2;  Yang, Fuquan2;  Zhao, Xudong2;  Liu, Pingsheng2;  Zhao, Zongbao K.1, 3
刊名: EUKARYOTIC CELL
发表日期: 2015-03-01
DOI: 10.1128/EC.00141-14
卷: 14, 期:3, 页:252-264
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Microbiology ;  Mycology
研究领域[WOS]: Microbiology ;  Mycology
英文摘要: Lipid droplets (LDs) are ubiquitous organelles that serve as a neutral lipid reservoir and a hub for lipid metabolism. Manipulating LD formation, evolution, and mobilization in oleaginous species may lead to the production of fatty acid-derived biofuels and chemicals. However, key factors regulating LD dynamics remain poorly characterized. Here we purified the LDs and identified LD-associated proteins from cells of the lipid-producing yeast Rhodosporidium toruloides cultured under nutrient-rich, nitrogen-limited, and phosphorus-limited conditions. The LD proteome consisted of 226 proteins, many of which are involved in lipid metabolism and LD formation and evolution. Further analysis of our previous comparative transcriptome and proteome data sets indicated that the transcription level of 85 genes and protein abundance of 77 proteins changed under nutrient-limited conditions. Such changes were highly relevant to lipid accumulation and partially confirmed by reverse transcription-quantitative PCR. We demonstrated that the major LD structure protein Ldp1 is an LD marker protein being upregulated in lipid-rich cells. When overexpressed in Saccharomyces cerevisiae, Ldp1 localized on the LD surface and facilitated giant LD formation, suggesting that Ldp1 plays an important role in controlling LD dynamics. Our results significantly advance the understanding of the molecular basis of lipid overproduction and storage in oleaginous yeasts and will be valuable for the development of superior lipid producers.
关键词[WOS]: SACCHAROMYCES-CEREVISIAE ;  ASPERGILLUS-NIDULANS ;  BIODIESEL PRODUCTION ;  HIGH CONFIDENCE ;  BODY PROTEIN ;  FAT STORAGE ;  REVEALS ;  IDENTIFICATION ;  LOCALIZATION ;  ACCUMULATION
语种: 英语
WOS记录号: WOS:000350666000006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146069
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Biotechnol, Dalian, Peoples R China
2.Chinese Acad Sci, Inst Biophys, Natl Lab Biomacromol, Beijing, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian, Peoples R China

Recommended Citation:
Zhu, Zhiwei,Ding, Yunfeng,Gong, Zhiwei,et al. Dynamics of the Lipid Droplet Proteome of the Oleaginous Yeast Rhodosporidium toruloides[J]. EUKARYOTIC CELL,2015,14(3):252-264.
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