Base de dados : MEDLINE
Pesquisa : D12.776.765.149 [Categoria DeCS]
Referências encontradas : 26831 [refinar]
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  1 / 26831 MEDLINE  
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[PMID]:29422671
[Au] Autor:Li C; Zhang B; Chen B; Ji L; Yu H
[Ad] Endereço:Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore.
[Ti] Título:Site-specific phosphorylation of TRANSPARENT TESTA GLABRA1 mediates carbon partitioning in Arabidopsis seeds.
[So] Source:Nat Commun;9(1):571, 2018 02 08.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Seed development is dependent on nutrients, such as a source of carbon, supplied by the parent plant. It remains largely unknown how these nutrients are distributed to zygotic and maternal tissues to coordinate storage of reserve compounds and development of protective tissues like seed coat. Here we show that phosphorylation of TRANSPARENT TESTA GLABRA1 (TTG1) is regulated by SHAGGY-like kinases 11/12 (SK11/12) and that this mediates carbon flow to fatty acid synthesis and seed coat traits in Arabidopsis seeds. SK11/12 phosphorylate TTG1 at serine 215, thus preventing TTG1 interaction with TRANSPARENT TESTA2. This compromises recruitment of TTG1 to the GLABRA2 locus and downregulates GLABRA2 expression, which enhances biosynthesis of fatty acids in the embryo, but reduces production of mucilage and flavonoid pigments in the seed coat. Therefore, site-specific phosphorylation of TTG1 by SK11/SK12 regulates carbon partitioning between zygotic and maternal sinks in seeds.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/genética
Arabidopsis/genética
Carbono/metabolismo
Regulação da Expressão Gênica de Plantas
Sementes/genética
[Mh] Termos MeSH secundário: Arabidopsis/crescimento & desenvolvimento
Arabidopsis/metabolismo
Proteínas de Arabidopsis/metabolismo
Ácidos Graxos/biossíntese
Flavonoides/biossíntese
Regulação da Expressão Gênica no Desenvolvimento
Quinase 3 da Glicogênio Sintase/genética
Quinase 3 da Glicogênio Sintase/metabolismo
Isoenzimas/genética
Isoenzimas/metabolismo
Mutação
Fenótipo
Fosforilação
Mucilagem Vegetal/biossíntese
Sementes/crescimento & desenvolvimento
Sementes/metabolismo
Fatores de Transcrição/genética
Fatores de Transcrição/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Fatty Acids); 0 (Flavonoids); 0 (Isoenzymes); 0 (Plant Mucilage); 0 (TTG1 protein, Arabidopsis); 0 (TTG2 protein, Arabidopsis); 0 (Transcription Factors); 7440-44-0 (Carbon); EC 2.7.11.26 (ATSK11 protein, Arabidopsis); EC 2.7.11.26 (Glycogen Synthase Kinase 3)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-018-03013-5


  2 / 26831 MEDLINE  
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[PMID]:29253890
[Au] Autor:Patharkar OR; Gassmann W; Walker JC
[Ad] Endereço:Division of Biological Sciences and Interdisciplinary Plant Group, University of Missouri, Columbia, MO, United States of America.
[Ti] Título:Leaf shedding as an anti-bacterial defense in Arabidopsis cauline leaves.
[So] Source:PLoS Genet;13(12):e1007132, 2017 12.
[Is] ISSN:1553-7404
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Plants utilize an innate immune system to protect themselves from disease. While many molecular components of plant innate immunity resemble the innate immunity of animals, plants also have evolved a number of truly unique defense mechanisms, particularly at the physiological level. Plant's flexible developmental program allows them the unique ability to simply produce new organs as needed, affording them the ability to replace damaged organs. Here we develop a system to study pathogen-triggered leaf abscission in Arabidopsis. Cauline leaves infected with the bacterial pathogen Pseudomonas syringae abscise as part of the defense mechanism. Pseudomonas syringae lacking a functional type III secretion system fail to elicit an abscission response, suggesting that the abscission response is a novel form of immunity triggered by effectors. HAESA/HAESA-like 2, INFLORESCENCE DEFICIENT IN ABSCISSION, and NEVERSHED are all required for pathogen-triggered abscission to occur. Additionally phytoalexin deficient 4, enhanced disease susceptibility 1, salicylic acid induction-deficient 2, and senescence-associated gene 101 plants with mutations in genes necessary for bacterial defense and salicylic acid signaling, and NahG transgenic plants with low levels of salicylic acid fail to abscise cauline leaves normally. Bacteria that physically contact abscission zones trigger a strong abscission response; however, long-distance signals are also sent from distal infected tissue to the abscission zone, alerting the abscission zone of looming danger. We propose a threshold model regulating cauline leaf defense where minor infections are handled by limiting bacterial growth, but when an infection is deemed out of control, cauline leaves are shed. Together with previous results, our findings suggest that salicylic acid may regulate both pathogen- and drought-triggered leaf abscission.
[Mh] Termos MeSH primário: Arabidopsis/fisiologia
Folhas de Planta/genética
Folhas de Planta/fisiologia
[Mh] Termos MeSH secundário: Arabidopsis/genética
Proteínas de Arabidopsis/genética
Flores/genética
Genes de Plantas
Imunidade Inata
Inflorescência/genética
Mutação
Folhas de Planta/microbiologia
Plantas Geneticamente Modificadas
Proteínas Serina-Treonina Quinases/genética
Pseudomonas syringae/genética
Pseudomonas syringae/isolamento & purificação
Ácido Salicílico
Transdução de Sinais/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); EC 2.7.11.1 (Protein-Serine-Threonine Kinases); O414PZ4LPZ (Salicylic Acid)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pgen.1007132


  3 / 26831 MEDLINE  
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[PMID]:29301030
[Au] Autor:Begara-Morales JC
[Ad] Endereço:Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, Faculty of Experimental Sciences, Campus Universitario 'Las Lagunillas' s/n, University of Jaén, E-23071, Jaén, Spain.
[Ti] Título:GSNOR Regulates VND7-Mediated Xylem Vessel Cell Differentiation.
[So] Source:Plant Cell Physiol;59(1):5-7, 2018 01 01.
[Is] ISSN:1471-9053
[Cp] País de publicação:Japan
[La] Idioma:eng
[Mh] Termos MeSH primário: Proteínas de Arabidopsis
Xilema/citologia
[Mh] Termos MeSH secundário: Diferenciação Celular
[Pt] Tipo de publicação:JOURNAL ARTICLE; COMMENT
[Nm] Nome de substância:
0 (Arabidopsis Proteins)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180105
[St] Status:MEDLINE
[do] DOI:10.1093/pcp/pcx205


  4 / 26831 MEDLINE  
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[PMID]:28467358
[Au] Autor:Qu Y; Liu S; Bao W; Xue X; Ma Z; Yokawa K; Baluska F; Wan Y
[Ad] Endereço:College of Biological Sciences and Biotechnology, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, China. quyanli@bjfu.edu.cn.
[Ti] Título:Expression of Root Genes in Arabidopsis Seedlings Grown by Standard and Improved Growing Methods.
[So] Source:Int J Mol Sci;18(5), 2017 May 03.
[Is] ISSN:1422-0067
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Roots of seedlings grown in the laboratory using the traditional plant-growing culture system (TPG) were covered to maintain them in darkness. This new method is based on a dark chamber and is named the improved plant-growing method (IPG). We measured the light conditions in dark chambers, and found that the highest light intensity was dramatically reduced deeper in the dark chamber. In the bottom and side parts of dark chambers, roots were almost completely shaded. Using the high-throughput RNA sequencing method on the whole RNA extraction from roots, we compared the global gene expression levels in roots of seedlings from these two conditions and identified 141 differently expressed genes (DEGs) between them. According to the KEGG (Kyoto Encyclopedia of Genes and Genomes) enrichment, the flavone and flavonol biosynthesis and flavonoid biosynthesis pathways were most affected among all annotated pathways. Surprisingly, no genes of known plant photoreceptors were identified as DEGs by this method. Considering that the light intensity was decreased in the IPG system, we collected four sections (1.5 cm for each) of roots grown in TPG and IPG conditions, and the spatial-related differential gene expression levels of plant photoreceptors and polar auxin transporters, including , , , , , , and were analyzed by qRT-PCR. Using these results, we generated a map of the spatial-related expression patterns of these genes under IPG and TPG conditions. The expression levels of light-related genes in roots is highly sensitive to illumination and it provides a background reference for selecting an improved culture method for laboratory-maintained seedlings.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/genética
Arabidopsis/crescimento & desenvolvimento
Arabidopsis/genética
Regulação da Expressão Gênica de Plantas
Raízes de Plantas/crescimento & desenvolvimento
Raízes de Plantas/genética
[Mh] Termos MeSH secundário: Arabidopsis/efeitos da radiação
Escuridão
Flavonas/genética
Flavonoides/genética
Regulação da Expressão Gênica de Plantas/efeitos da radiação
Genes de Plantas
Sequenciamento de Nucleotídeos em Larga Escala
Luz
Fotorreceptores de Plantas/genética
Fitocromo/genética
Raízes de Plantas/efeitos da radiação
RNA/genética
Plântulas/genética
Plântulas/crescimento & desenvolvimento
Transcriptoma/genética
Transcriptoma/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Flavones); 0 (Flavonoids); 0 (Photoreceptors, Plant); 11121-56-5 (Phytochrome); 63231-63-0 (RNA); S2V45N7G3B (flavone); ZTG9LSS5QH (3-hydroxyflavone)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170504
[St] Status:MEDLINE


  5 / 26831 MEDLINE  
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[PMID]:28458047
[Au] Autor:Yasuda S; Okada K; Saijo Y
[Ad] Endereço:Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan.
[Ti] Título:A look at plant immunity through the window of the multitasking coreceptor BAK1.
[So] Source:Curr Opin Plant Biol;38:10-18, 2017 08.
[Is] ISSN:1879-0356
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Recognition of microbe- and danger-associated molecular patterns (MAMPs and DAMPs, respectively) by pattern recognition receptors (PRRs) is central to innate immunity in both plants and animals. The plant PRRs described to date are all cell surface-localized receptors. According to their ligand-binding ectodomains, each PRR engages a specific coreceptor or adaptor kinase in its signaling complexes to regulate defense signaling. With a focus on the coreceptor RLK BRI1-ASSOCIATED RECEPTOR KINASE1 (BAK1) and related SOMATIC EMBRYOGENESIS RECEPTOR KINASEs (SERKs), here we review the increasing inventory of BAK1 partners and their functions in plant immunity. We also discuss the significance of autoimmunity triggered by BAK1/SERK4 disintegration in shaping the strategies for attenuation of PRR signaling by infectious microbes and host plants.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/imunologia
Proteínas de Arabidopsis/metabolismo
Arabidopsis/imunologia
[Mh] Termos MeSH secundário: Arabidopsis/metabolismo
Proteínas de Arabidopsis/genética
Imunidade Vegetal/genética
Imunidade Vegetal/fisiologia
Proteínas Serina-Treonina Quinases/genética
Proteínas Serina-Treonina Quinases/metabolismo
Receptores de Reconhecimento de Padrão/genética
Receptores de Reconhecimento de Padrão/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Receptors, Pattern Recognition); EC 2.7.1.- (BAK1 protein, Arabidopsis); EC 2.7.11.1 (Protein-Serine-Threonine Kinases)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


  6 / 26831 MEDLINE  
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[PMID]:29229392
[Au] Autor:Zhou A; Sun H; Feng S; Zhou M; Gong S; Wang J; Zhang S
[Ad] Endereço:College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China. Electronic address: aiminzhou@neau.edu.cn.
[Ti] Título:A novel cold-regulated gene from Phlox subulata, PsCor413im1, enhances low temperature tolerance in Arabidopsis.
[So] Source:Biochem Biophys Res Commun;495(2):1688-1694, 2018 01 08.
[Is] ISSN:1090-2104
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Low temperature stress adversely affects plant growth, development, and crop productivity. Analysis of the function of genes in the response of plants to low temperature stress is essential for understanding the mechanism of chilling and freezing tolerance. In this study, PsCor413im1, a novel cold-regulated gene isolated from Phlox subulata, was transferred to Arabidopsis to investigate its function under low temperature stress. Real-time quantitative PCR analysis revealed that PsCor413im1 expression was induced by cold and abscisic acid. Subcellular localization revealed that PsCor413im1-GFP fusion protein was localized to the periphery of the chloroplast, consistent with the localization of chloroplast inner membrane protein AtCor413im1, indicating that PsCor413im1 is a chloroplast membrane protein. Furthermore, the N-terminal of PsCor413im1 was determined to be necessary for its localization. Compared to the wild-type plants, transgenic plants showed higher germination and survival rates under cold and freezing stress. Moreover, the expression of AtCor15 in transgenic plants was higher than that in the wild-type plants under cold stress. Taken together, our results suggest that the overexpression of PsCor413im1 enhances low temperature tolerance in Arabidopsis.
[Mh] Termos MeSH primário: Aclimatação/genética
Arabidopsis/genética
Ericales/genética
Genes de Plantas
[Mh] Termos MeSH secundário: Aclimatação/fisiologia
Sequência de Aminoácidos
Arabidopsis/crescimento & desenvolvimento
Arabidopsis/fisiologia
Proteínas de Arabidopsis/genética
Proteínas de Arabidopsis/metabolismo
Temperatura Baixa
Ericales/fisiologia
Técnicas de Transferência de Genes
Filogenia
Proteínas de Plantas/genética
Proteínas de Plantas/metabolismo
Plantas Geneticamente Modificadas
Proteínas Recombinantes de Fusão/genética
Proteínas Recombinantes de Fusão/metabolismo
Homologia de Sequência de Aminoácidos
Frações Subcelulares/metabolismo
Regulação para Cima
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Plant Proteins); 0 (Recombinant Fusion Proteins)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171213
[St] Status:MEDLINE


  7 / 26831 MEDLINE  
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[PMID]:29298981
[Au] Autor:Díaz MG; Hernández-Verdeja T; Kremnev D; Crawford T; Dubreuil C; Strand Å
[Ad] Endereço:Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-901 87, Umeå, Sweden.
[Ti] Título:Redox regulation of PEP activity during seedling establishment in Arabidopsis thaliana.
[So] Source:Nat Commun;9(1):50, 2018 01 03.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Activation of the plastid-encoded RNA polymerase is tightly controlled and involves a network of phosphorylation and, as yet unidentified, thiol-mediated events. Here, we characterize PLASTID REDOX INSENSITIVE2, a redox-regulated protein required for full PEP-driven transcription. PRIN2 dimers can be reduced into the active monomeric form by thioredoxins through reduction of a disulfide bond. Exposure to light increases the ratio between the monomeric and dimeric forms of PRIN2. Complementation of prin2-2 with different PRIN2 protein variants demonstrates that the monomer is required for light-activated PEP-dependent transcription and that expression of the nuclear-encoded photosynthesis genes is linked to the activity of PEP. Activation of PEP during chloroplast development likely is the source of a retrograde signal that promotes nuclear LHCB expression. Thus, regulation of PRIN2 is the thiol-mediated mechanism required for full PEP activity, with PRIN2 monomerization via reduction by TRXs providing a mechanistic link between photosynthetic electron transport and activation of photosynthetic gene expression.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/metabolismo
Arabidopsis/enzimologia
Tiorredoxinas de Cloroplastos/metabolismo
Peptídeos e Proteínas de Sinalização Intracelular/metabolismo
Plântulas/enzimologia
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Transporte de Elétrons
Fotossíntese
Plastídeos/metabolismo
Transcrição Genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Chloroplast Thioredoxins); 0 (Intracellular Signaling Peptides and Proteins); 0 (PRIN2 protein, Arabidopsis); 0 (thioredoxin z, Arabidopsis)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180105
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02468-2


  8 / 26831 MEDLINE  
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[PMID]:29293590
[Au] Autor:Tevatia R; Oyler GA
[Ad] Endereço:Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America.
[Ti] Título:Evolution of DDB1-binding WD40 (DWD) in the viridiplantae.
[So] Source:PLoS One;13(1):e0190282, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Damaged DNA Binding 1 (DDB1)-binding WD40 (DWD) proteins are highly conserved and involved in a plethora of developmental and physiological processes such as flowering time control, photomorphogenesis, and abiotic stress responses. The phylogeny of this family of proteins in plants and algae of viridiplante is a critical area to understand the emergence of this family in such important and diverse functions. We aimed to investigate the putative homologs of DWD in the viridiplante and establish a deeper DWD evolutionary grasp. The advancement in publicly available genomic data allowed us to perform an extensive genome-wide DWD retrieval. Using annotated Arabidopsis thaliana DWDs as the reference, we generated and characterized a comprehensive DWD database for the studied photoautotrophs. Further, a generic DWD classification system (Type A to K), based on (i) position of DWD motifs, (ii) number of DWD motifs, and (iii) presence/absence of other domains, was adopted. About 72-80% DWDs have one DWD motif, whereas 17-24% DWDs have two and 0.5-4.7% DWDs have three DWD motifs. Neighbor-joining phylogenetic construction of A. thaliana DWDs facilitated us to tune these substrate receptors into 15 groups. Though the DWD count increases from microalgae to higher land plants, the ratio of DWD to WD40 remained constant throughout the viridiplante. The DWD expansion appeared to be the consequence of consistent DWD genetic flow accompanied by several gene duplication events. The network, phylogenetic, and statistical analysis delineated DWD evolutionary relevance in the viridiplante.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/metabolismo
Arabidopsis/metabolismo
Evolução Biológica
[Mh] Termos MeSH secundário: Arabidopsis/classificação
Filogenia
Alinhamento de Sequência
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Arabidopsis Proteins)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190282


  9 / 26831 MEDLINE  
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[PMID]:29247649
[Au] Autor:Park KY; Kim WT; Kim EY
[Ad] Endereço:Department of Systems Biology, College of Life Sciences and Biotechnology, Yonsei University, Seoul 03722, South Korea.
[Ti] Título:The proper localization of RESPONSIVE TO DESICCATION 20 in lipid droplets depends on their biogenesis induced by STRESS-RELATED PROTEINS in vegetative tissues.
[So] Source:Biochem Biophys Res Commun;495(2):1885-1889, 2018 01 08.
[Is] ISSN:1090-2104
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Arabidopsis LD surface proteins, SRPs are found only in higher plants and are important for LD biogenesis and abiotic stress signaling. However, the cellular mechanism of SRPs is still unclear. To investigate molecular functions of SRPs, we used tobacco transient expression system. Transient expression of SRPs was sufficient and synergistic for LD biogenesis, and SRPs participated in the formation step of LD in tobacco leaves. RESPONSIVE TO DESICCATION 20 (RD20), a known LD-localizing peroxygenase, localized to LD in the presence of an SRP, and its peroxygenase activity correlated with proper localization of RD20 to LD. Our data suggest that Arabidopsis SRPs play roles as positive factors for LD biogenesis to provide a proper localization of LD-localizing proteins in vegetative tissues.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/biossíntese
Arabidopsis/metabolismo
Proteínas de Ligação ao Cálcio/biossíntese
Regulação da Expressão Gênica de Plantas/fisiologia
Proteínas de Choque Térmico/metabolismo
Gotículas Lipídicas/metabolismo
Frações Subcelulares/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Calcium-Binding Proteins); 0 (Heat-Shock Proteins); 0 (RD20 protein, Arabidopsis)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171217
[St] Status:MEDLINE


  10 / 26831 MEDLINE  
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[PMID]:29229384
[Au] Autor:Yang J; Zhang M; Wang X
[Ad] Endereço:School of Life Sciences, Anhui University, 111 Jiulong Road, Hefei, Anhui 230601, China.
[Ti] Título:Crystal structure of the chloroplast RNA editing factor MORF2.
[So] Source:Biochem Biophys Res Commun;495(2):2038-2043, 2018 01 08.
[Is] ISSN:1090-2104
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:RNA editing is a post-transcription process that alters the genetic information on RNA molecules. In plastids and mitochondria of flowering plants, the multiple organellar RNA editing factors (MORFs) interact with the PLS-type pentatricopeptide repeat (PPR) proteins and participate in RNA editing of cytidine-to-uridine conversion. The PPR proteins recognize cytidine targets around the editing sites, and the MORF proteins modulate the RNA-binding activity of the PPR proteins. Here, we report the structure of the Arabidopsis thaliana chloroplast MORF2 at 2.4 Å resolution. The structure, adopting typical MORF-box fold as observed in mitochondrial MORF1 and chloroplast MORF9, reveals an MORF1-like dimerization mode. The difference between the two dimerization modes can be attributed to F157 (corresponding F162 in MORF1 and W160 in MORF9), which causes a 60° shift upon dimerization. This observation, together with the PPR-MORF2 model, suggests a dimer-to-monomer transition during RNA editosome formation.
[Mh] Termos MeSH primário: Arabidopsis/química
Arabidopsis/ultraestrutura
Cloroplastos/ultraestrutura
RNA de Cloroplastos/ultraestrutura
[Mh] Termos MeSH secundário: Proteínas de Arabidopsis
Cloroplastos/química
Proteínas Mitocondriais
Conformação Proteica
Edição de RNA
RNA de Cloroplastos/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (MORF2 protein, Arabidopsis); 0 (Mitochondrial Proteins); 0 (RNA, Chloroplast)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171213
[St] Status:MEDLINE



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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde