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题名: Phosphoproteomic Analysis Provides Novel Insights into Stress Responses in Phaeodactylum tricornutum, a Model Diatom
作者: Chen, Zhuo1; Yang, Ming-kun2; Li, Chong-yang2; Wang, Yan2; Zhang, Jia2; Wang, Dian-bing3; Zhang, Xian-en1, 3; Ge, Feng2
通讯作者: Zhang, XE (reprint author), Chinese Acad Sci, Wuhan Inst Virol, State Key Lab Virol, Wuhan 430071, Peoples R China.
关键词: diatom ; Phaeodactylum tricornutum ; phosphoproteomics ; stress responses
刊名: JOURNAL OF PROTEOME RESEARCH
发表日期: 2014-05-01
DOI: 10.1021/pr401290u
卷: 13, 期:5, 页:2511-2523
收录类别: SCI
文章类型: Article
部门归属: [Chen, Zhuo; Zhang, Xian-en] Chinese Acad Sci, Wuhan Inst Virol, State Key Lab Virol, Wuhan 430071, Peoples R China; [Yang, Ming-kun; Li, Chong-yang; Wang, Yan; Zhang, Jia; Ge, Feng] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China; [Wang, Dian-bing; Zhang, Xian-en] Chinese Acad Sci, Inst Biophys, State Key Lab Biomacromol, Beijing 100080, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [31370746]; Hundred Talents Program of the Chinese Academy of Sciences; State Key Laboratory Program
类目[WOS]: Biochemical Research Methods
研究领域[WOS]: Biochemistry & Molecular Biology
摘要: Protein phosphorylation on serine, threonine, and tyrosine (Ser/Thr/Tyr) is well established as a key regulatory posttranslational modification used in signal transduction to control cell growth, proliferation, and stress responses. However, little is known about its extent and function in diatoms. Phaeodactylum tricornutum is a unicellular marine diatom that has been used as a model organism for research on diatom molecular biology. Although more than 1000 protein kinases and phosphatases with specificity for Ser/Thr/Tyr residues have been predicted in P. tricornutum, no phosphorylation event has so far been revealed by classical biochemical approaches. Here, we performed a global phosphoproteomic analysis combining protein/peptide fractionation, TiO2 enrichment, and LC-MS/MS analyses. In total, we identified 264 unique phosphopeptides, including 434 in vivo phosphorylated sites on 245 phosphoproteins. The phosphorylated proteins were implicated in the regulation of diverse biological processes, including signaling, metabolic pathways, and stress responses. Six identified phosphoproteins were further validated by Western blotting using phospho-specific antibodies. The functions of these proteins are discussed in the context of signal transduction networks in P. tricornutum. Our results advance the current understanding of diatom biology and will be useful for elucidating the phosphor-relay signaling networks in this model diatom.
英文摘要: Protein phosphorylation on serine, threonine, and tyrosine (Ser/Thr/Tyr) is well established as a key regulatory posttranslational modification used in signal transduction to control cell growth, proliferation, and stress responses. However, little is known about its extent and function in diatoms. Phaeodactylum tricornutum is a unicellular marine diatom that has been used as a model organism for research on diatom molecular biology. Although more than 1000 protein kinases and phosphatases with specificity for Ser/Thr/Tyr residues have been predicted in P. tricornutum, no phosphorylation event has so far been revealed by classical biochemical approaches. Here, we performed a global phosphoproteomic analysis combining protein/peptide fractionation, TiO2 enrichment, and LC-MS/MS analyses. In total, we identified 264 unique phosphopeptides, including 434 in vivo phosphorylated sites on 245 phosphoproteins. The phosphorylated proteins were implicated in the regulation of diverse biological processes, including signaling, metabolic pathways, and stress responses. Six identified phosphoproteins were further validated by Western blotting using phospho-specific antibodies. The functions of these proteins are discussed in the context of signal transduction networks in P. tricornutum. Our results advance the current understanding of diatom biology and will be useful for elucidating the phosphor-relay signaling networks in this model diatom.
关键词[WOS]: TANDEM MASS-SPECTROMETRY ; PROTEIN-PHOSPHORYLATION MOTIFS ; MARINE DIATOM ; THALASSIOSIRA-PSEUDONANA ; CHLAMYDOMONAS-REINHARDTII ; LIPID-ACCUMULATION ; NITRIC-OXIDE ; PEPTIDE IDENTIFICATION ; PROTEOMIC ANALYSIS ; IN-VIVO
语种: 英语
WOS记录号: WOS:000335490600024
ISSN号: 1535-3893
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20085
Appears in Collections:水生生物分子与细胞生物学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Wuhan Inst Virol, State Key Lab Virol, Wuhan 430071, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
3.Chinese Acad Sci, Inst Biophys, State Key Lab Biomacromol, Beijing 100080, Peoples R China

Recommended Citation:
Chen, Zhuo; Yang, Ming-kun; Li, Chong-yang; Wang, Yan; Zhang, Jia; Wang, Dian-bing; Zhang, Xian-en; Ge, Feng.Phosphoproteomic Analysis Provides Novel Insights into Stress Responses in Phaeodactylum tricornutum, a Model Diatom,JOURNAL OF PROTEOME RESEARCH,2014,13(5):2511-2523
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