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  • Protein Binding  (474)
  • Molecular Sequence Data  (463)
  • Nature Publishing Group (NPG)  (891)
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  • 1
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    Single-molecule imaging reveals mechanisms of protein disruption by a DNA translocase (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-11-26
    Description: In physiological settings, nucleic-acid translocases must act on substrates occupied by other proteins, and an increasingly appreciated role of translocases is to catalyse protein displacement from RNA and DNA. However, little is known regarding the inevitable collisions that must occur, and the fate of protein obstacles and the mechanisms by which they are evicted from DNA remain unexplored. Here we sought to establish the mechanistic basis for protein displacement from DNA using RecBCD as a model system. Using nanofabricated curtains of DNA and multicolour single-molecule microscopy, we visualized collisions between a model translocase and different DNA-bound proteins in real time. We show that the DNA translocase RecBCD can disrupt core RNA polymerase, holoenzymes, stalled elongation complexes and transcribing RNA polymerases in either head-to-head or head-to-tail orientations, as well as EcoRI(E111Q), lac repressor and even nucleosomes. RecBCD did not pause during collisions and often pushed proteins thousands of base pairs before evicting them from DNA. We conclude that RecBCD overwhelms obstacles through direct transduction of chemomechanical force with no need for specific protein-protein interactions, and that proteins can be removed from DNA through active disruption mechanisms that act on a transition state intermediate as they are pushed from one nonspecific site to the next.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3230117/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3230117/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finkelstein, Ilya J -- Visnapuu, Mari-Liis -- Greene, Eric C -- F32GM80864/GM/NIGMS NIH HHS/ -- GM074739/GM/NIGMS NIH HHS/ -- GM082848/GM/NIGMS NIH HHS/ -- R01 CA146940/CA/NCI NIH HHS/ -- R01 GM074739/GM/NIGMS NIH HHS/ -- R01 GM074739-01A1/GM/NIGMS NIH HHS/ -- R01 GM074739-05/GM/NIGMS NIH HHS/ -- R01 GM082848/GM/NIGMS NIH HHS/ -- R01 GM082848-01A1/GM/NIGMS NIH HHS/ -- R01 GM082848-04/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Dec 16;468(7326):983-7. doi: 10.1038/nature09561. Epub 2010 Nov 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21107319" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophage lambda/genetics ; Biocatalysis ; DNA/genetics/*metabolism ; DNA, Viral/genetics/metabolism ; DNA-Binding Proteins/*metabolism ; DNA-Directed RNA Polymerases/chemistry/metabolism ; Deoxyribonuclease EcoRI/metabolism ; Escherichia coli/enzymology ; Exodeoxyribonuclease V/*metabolism ; Holoenzymes/chemistry/metabolism ; Lac Repressors/metabolism ; Microscopy, Fluorescence ; *Movement ; Nucleosomes/metabolism ; Promoter Regions, Genetic/genetics ; Protein Binding ; Quantum Dots ; Time Factors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
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    Control of female gamete formation by a small RNA pathway in Arabidopsis (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-03-09
    Description: In the ovules of most sexual flowering plants female gametogenesis is initiated from a single surviving gametic cell, the functional megaspore, formed after meiosis of the somatically derived megaspore mother cell (MMC). Because some mutants and certain sexual species exhibit more than one MMC, and many others are able to form gametes without meiosis (by apomixis), it has been suggested that somatic cells in the ovule are competent to respond to a local signal likely to have an important function in determination. Here we show that the Arabidopsis protein ARGONAUTE 9 (AGO9) controls female gamete formation by restricting the specification of gametophyte precursors in a dosage-dependent, non-cell-autonomous manner. Mutations in AGO9 lead to the differentiation of multiple gametic cells that are able to initiate gametogenesis. The AGO9 protein is not expressed in the gamete lineage; instead, it is expressed in cytoplasmic foci of somatic companion cells. Mutations in SUPPRESSOR OF GENE SILENCING 3 and RNA-DEPENDENT RNA POLYMERASE 6 exhibit an identical defect to ago9 mutants, indicating that the movement of small RNA (sRNAs) silencing out of somatic companion cells is necessary for controlling the specification of gametic cells. AGO9 preferentially interacts with 24-nucleotide sRNAs derived from transposable elements (TEs), and its activity is necessary to silence TEs in female gametes and their accessory cells. Our results show that AGO9-dependent sRNA silencing is crucial to specify cell fate in the Arabidopsis ovule, and that epigenetic reprogramming in companion cells is necessary for sRNA-dependent silencing in plant gametes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613780/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4613780/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olmedo-Monfil, Vianey -- Duran-Figueroa, Noe -- Arteaga-Vazquez, Mario -- Demesa-Arevalo, Edgar -- Autran, Daphne -- Grimanelli, Daniel -- Slotkin, R Keith -- Martienssen, Robert A -- Vielle-Calzada, Jean-Philippe -- R01 GM067014/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Mar 25;464(7288):628-32. doi: 10.1038/nature08828. Epub 2010 Mar 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Grupo de Desarrollo Reproductivo y Apomixis, Laboratorio Nacional de Genomica para la Biodiversidad y Departamento de Ingenieria Genetica de Plantas, Cinvestav Irapuato CP36500 Guanajuato, Mexico.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20208518" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/growth & development/*metabolism ; Arabidopsis Proteins/genetics/*metabolism ; Argonaute Proteins ; DNA Transposable Elements/genetics ; Gametogenesis, Plant/*physiology ; Gene Expression Regulation, Plant ; Gene Silencing ; Meiosis ; Molecular Sequence Data ; Mutagenesis, Insertional/genetics ; Ovule/growth & development/*metabolism ; Phenotype ; RNA, Plant/*metabolism ; RNA-Binding Proteins/genetics/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
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    Active site remodelling accompanies thioester bond formation in the SUMO E1 (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-02-19
    Description: E1 enzymes activate ubiquitin (Ub) and ubiquitin-like (Ubl) proteins in two steps by carboxy-terminal adenylation and thioester bond formation to a conserved catalytic cysteine in the E1 Cys domain. The structural basis for these intermediates remains unknown. Here we report crystal structures for human SUMO E1 in complex with SUMO adenylate and tetrahedral intermediate analogues at 2.45 and 2.6 A, respectively. These structures show that side chain contacts to ATP.Mg are released after adenylation to facilitate a 130 degree rotation of the Cys domain during thioester bond formation that is accompanied by remodelling of key structural elements including the helix that contains the E1 catalytic cysteine, the crossover and re-entry loops, and refolding of two helices that are required for adenylation. These changes displace side chains required for adenylation with side chains required for thioester bond formation. Mutational and biochemical analyses indicate these mechanisms are conserved in other E1s.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2866016/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2866016/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olsen, Shaun K -- Capili, Allan D -- Lu, Xuequan -- Tan, Derek S -- Lima, Christopher D -- F32 GM075695/GM/NIGMS NIH HHS/ -- F32 GM075695-03/GM/NIGMS NIH HHS/ -- R01 AI068038/AI/NIAID NIH HHS/ -- R01 AI068038-02/AI/NIAID NIH HHS/ -- R01 AI068038-03/AI/NIAID NIH HHS/ -- R01 GM065872/GM/NIGMS NIH HHS/ -- R01 GM065872-09/GM/NIGMS NIH HHS/ -- RR-15301/RR/NCRR NIH HHS/ -- England -- Nature. 2010 Feb 18;463(7283):906-12. doi: 10.1038/nature08765.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Biology, Sloan-Kettering Institute, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20164921" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; *Biocatalysis ; Catalytic Domain/*physiology ; Conserved Sequence ; Crystallography, X-Ray ; Cysteine/chemistry/metabolism ; Humans ; Magnesium/metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; SUMO-1 Protein/*chemistry/*metabolism ; Saccharomyces cerevisiae ; Saccharomyces cerevisiae Proteins/metabolism ; Small Ubiquitin-Related Modifier Proteins/metabolism ; Sulfides/*metabolism ; Ubiquitin/metabolism ; Ubiquitin-Activating Enzymes/*chemistry/*metabolism ; Ubiquitins/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    A novel and unified two-metal mechanism for DNA cleavage by type II and IA topoisomerases (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-05-21
    Description: Type II topoisomerases are required for the management of DNA tangles and supercoils, and are targets of clinical antibiotics and anti-cancer agents. These enzymes catalyse the ATP-dependent passage of one DNA duplex (the transport or T-segment) through a transient, double-stranded break in another (the gate or G-segment), navigating DNA through the protein using a set of dissociable internal interfaces, or 'gates'. For more than 20 years, it has been established that a pair of dimer-related tyrosines, together with divalent cations, catalyse G-segment cleavage. Recent efforts have proposed that strand scission relies on a 'two-metal mechanism', a ubiquitous biochemical strategy that supports vital cellular processes ranging from DNA synthesis to RNA self-splicing. Here we present the structure of the DNA-binding and cleavage core of Saccharomyces cerevisiae topoisomerase II covalently linked to DNA through its active-site tyrosine at 2.5A resolution, revealing for the first time the organization of a cleavage-competent type II topoisomerase configuration. Unexpectedly, metal-soaking experiments indicate that cleavage is catalysed by a novel variation of the classic two-metal approach. Comparative analyses extend this scheme to explain how distantly-related type IA topoisomerases cleave single-stranded DNA, unifying the cleavage mechanisms for these two essential enzyme families. The structure also highlights a hitherto undiscovered allosteric relay that actuates a molecular 'trapdoor' to prevent subunit dissociation during cleavage. This connection illustrates how an indispensable chromosome-disentangling machine auto-regulates DNA breakage to prevent the aberrant formation of mutagenic and cytotoxic genomic lesions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2882514/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2882514/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmidt, Bryan H -- Burgin, Alex B -- Deweese, Joseph E -- Osheroff, Neil -- Berger, James M -- CA077373/CA/NCI NIH HHS/ -- GM033944/GM/NIGMS NIH HHS/ -- GM053960/GM/NIGMS NIH HHS/ -- GM08295/GM/NIGMS NIH HHS/ -- R01 CA077373/CA/NCI NIH HHS/ -- R01 CA077373-11S1/CA/NCI NIH HHS/ -- R01 CA077373-12/CA/NCI NIH HHS/ -- R01 GM033944/GM/NIGMS NIH HHS/ -- T32 CA009592/CA/NCI NIH HHS/ -- T32CA09592/CA/NCI NIH HHS/ -- England -- Nature. 2010 Jun 3;465(7298):641-4. doi: 10.1038/nature08974.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20485342" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Base Sequence ; Catalytic Domain ; Crystallography, X-Ray ; DNA/*chemistry/genetics/*metabolism ; DNA Topoisomerases, Type I/*chemistry/*metabolism ; DNA Topoisomerases, Type II/*chemistry/*metabolism ; Kinetics ; Models, Molecular ; Molecular Sequence Data ; Saccharomyces cerevisiae/*enzymology ; Tyrosine
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  • 5
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    Coupled chaperone action in folding and assembly of hexadecameric Rubisco (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-01-16
    Description: Form I Rubisco (ribulose 1,5-bisphosphate carboxylase/oxygenase), a complex of eight large (RbcL) and eight small (RbcS) subunits, catalyses the fixation of atmospheric CO(2) in photosynthesis. The limited catalytic efficiency of Rubisco has sparked extensive efforts to re-engineer the enzyme with the goal of enhancing agricultural productivity. To facilitate such efforts we analysed the formation of cyanobacterial form I Rubisco by in vitro reconstitution and cryo-electron microscopy. We show that RbcL subunit folding by the GroEL/GroES chaperonin is tightly coupled with assembly mediated by the chaperone RbcX(2). RbcL monomers remain partially unstable and retain high affinity for GroEL until captured by RbcX(2). As revealed by the structure of a RbcL(8)-(RbcX(2))(8) assembly intermediate, RbcX(2) acts as a molecular staple in stabilizing the RbcL subunits as dimers and facilitates RbcL(8) core assembly. Finally, addition of RbcS results in RbcX(2) release and holoenzyme formation. Specific assembly chaperones may be required more generally in the formation of complex oligomeric structures when folding is closely coupled to assembly.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Cuimin -- Young, Anna L -- Starling-Windhof, Amanda -- Bracher, Andreas -- Saschenbrecker, Sandra -- Rao, Bharathi Vasudeva -- Rao, Karnam Vasudeva -- Berninghausen, Otto -- Mielke, Thorsten -- Hartl, F Ulrich -- Beckmann, Roland -- Hayer-Hartl, Manajit -- England -- Nature. 2010 Jan 14;463(7278):197-202. doi: 10.1038/nature08651.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20075914" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/chemistry/metabolism ; Chaperonin 10/metabolism ; Chaperonin 60/metabolism ; Cryoelectron Microscopy ; Holoenzymes/chemistry/metabolism ; Models, Molecular ; Molecular Chaperones/chemistry/*metabolism ; Protein Binding ; *Protein Folding ; *Protein Multimerization ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Ribulose-Bisphosphate Carboxylase/*chemistry/*metabolism/ultrastructure ; Synechococcus/*chemistry/metabolism
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  • 6
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    Antagonistic coevolution accelerates molecular evolution (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-02-26
    Description: The Red Queen hypothesis proposes that coevolution of interacting species (such as hosts and parasites) should drive molecular evolution through continual natural selection for adaptation and counter-adaptation. Although the divergence observed at some host-resistance and parasite-infectivity genes is consistent with this, the long time periods typically required to study coevolution have so far prevented any direct empirical test. Here we show, using experimental populations of the bacterium Pseudomonas fluorescens SBW25 and its viral parasite, phage Phi2 (refs 10, 11), that the rate of molecular evolution in the phage was far higher when both bacterium and phage coevolved with each other than when phage evolved against a constant host genotype. Coevolution also resulted in far greater genetic divergence between replicate populations, which was correlated with the range of hosts that coevolved phage were able to infect. Consistent with this, the most rapidly evolving phage genes under coevolution were those involved in host infection. These results demonstrate, at both the genomic and phenotypic level, that antagonistic coevolution is a cause of rapid and divergent evolution, and is likely to be a major driver of evolutionary change within species.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3717453/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3717453/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paterson, Steve -- Vogwill, Tom -- Buckling, Angus -- Benmayor, Rebecca -- Spiers, Andrew J -- Thomson, Nicholas R -- Quail, Mike -- Smith, Frances -- Walker, Danielle -- Libberton, Ben -- Fenton, Andrew -- Hall, Neil -- Brockhurst, Michael A -- 079643/Wellcome Trust/United Kingdom -- 098051/Wellcome Trust/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Mar 11;464(7286):275-8. doi: 10.1038/nature08798. Epub 2010 Feb 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, Biosciences Building, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20182425" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophages/genetics/*physiology ; *Biological Evolution ; *Evolution, Molecular ; Genetic Variation ; Molecular Sequence Data ; Phenotype ; Pseudomonas fluorescens/*genetics/*virology ; Selection, Genetic/genetics
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  • 7
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    Origin of the human malaria parasite Plasmodium falciparum in gorillas (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-09-25
    Description: Plasmodium falciparum is the most prevalent and lethal of the malaria parasites infecting humans, yet the origin and evolutionary history of this important pathogen remain controversial. Here we develop a single-genome amplification strategy to identify and characterize Plasmodium spp. DNA sequences in faecal samples from wild-living apes. Among nearly 3,000 specimens collected from field sites throughout central Africa, we found Plasmodium infection in chimpanzees (Pan troglodytes) and western gorillas (Gorilla gorilla), but not in eastern gorillas (Gorilla beringei) or bonobos (Pan paniscus). Ape plasmodial infections were highly prevalent, widely distributed and almost always made up of mixed parasite species. Analysis of more than 1,100 mitochondrial, apicoplast and nuclear gene sequences from chimpanzees and gorillas revealed that 99% grouped within one of six host-specific lineages representing distinct Plasmodium species within the subgenus Laverania. One of these from western gorillas comprised parasites that were nearly identical to P. falciparum. In phylogenetic analyses of full-length mitochondrial sequences, human P. falciparum formed a monophyletic lineage within the gorilla parasite radiation. These findings indicate that P. falciparum is of gorilla origin and not of chimpanzee, bonobo or ancient human origin.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2997044/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2997044/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Weimin -- Li, Yingying -- Learn, Gerald H -- Rudicell, Rebecca S -- Robertson, Joel D -- Keele, Brandon F -- Ndjango, Jean-Bosco N -- Sanz, Crickette M -- Morgan, David B -- Locatelli, Sabrina -- Gonder, Mary K -- Kranzusch, Philip J -- Walsh, Peter D -- Delaporte, Eric -- Mpoudi-Ngole, Eitel -- Georgiev, Alexander V -- Muller, Martin N -- Shaw, George M -- Peeters, Martine -- Sharp, Paul M -- Rayner, Julian C -- Hahn, Beatrice H -- P30 AI 7767/AI/NIAID NIH HHS/ -- P30 AI027767/AI/NIAID NIH HHS/ -- P30 AI027767-21A1/AI/NIAID NIH HHS/ -- R01 AI058715/AI/NIAID NIH HHS/ -- R01 AI058715-06A1/AI/NIAID NIH HHS/ -- R01 AI058715-07/AI/NIAID NIH HHS/ -- R01 AI50529/AI/NIAID NIH HHS/ -- R01 I58715/PHS HHS/ -- R03 AI074778/AI/NIAID NIH HHS/ -- R03 AI074778-02/AI/NIAID NIH HHS/ -- R37 AI050529/AI/NIAID NIH HHS/ -- R37 AI050529-07/AI/NIAID NIH HHS/ -- R37 AI050529-08/AI/NIAID NIH HHS/ -- T32 AI007245/AI/NIAID NIH HHS/ -- T32 AI007245-26/AI/NIAID NIH HHS/ -- T32 GM008111/GM/NIGMS NIH HHS/ -- T32 GM008111-13/GM/NIGMS NIH HHS/ -- U19 AI 067854/AI/NIAID NIH HHS/ -- U19 AI067854/AI/NIAID NIH HHS/ -- U19 AI067854-06/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Sep 23;467(7314):420-5. doi: 10.1038/nature09442.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20864995" target="_blank"〉PubMed〈/a〉
    Keywords: Africa/epidemiology ; Animals ; Animals, Wild/classification/parasitology ; Ape Diseases/epidemiology/*parasitology/transmission ; DNA, Mitochondrial/analysis/genetics ; Evolution, Molecular ; Feces/parasitology ; Genes, Mitochondrial/genetics ; Genetic Variation/genetics ; Genome, Protozoan/genetics ; Gorilla gorilla/classification/*parasitology ; Humans ; Malaria, Falciparum/epidemiology/*parasitology/transmission/*veterinary ; Molecular Sequence Data ; Pan paniscus/parasitology ; Pan troglodytes/parasitology ; Phylogeny ; Plasmodium/classification/genetics/isolation & purification ; Plasmodium falciparum/genetics/*isolation & purification ; Prevalence ; Zoonoses/parasitology/transmission
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  • 8
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    Genome sequence of the palaeopolyploid soybean (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-01-16
    Description: Soybean (Glycine max) is one of the most important crop plants for seed protein and oil content, and for its capacity to fix atmospheric nitrogen through symbioses with soil-borne microorganisms. We sequenced the 1.1-gigabase genome by a whole-genome shotgun approach and integrated it with physical and high-density genetic maps to create a chromosome-scale draft sequence assembly. We predict 46,430 protein-coding genes, 70% more than Arabidopsis and similar to the poplar genome which, like soybean, is an ancient polyploid (palaeopolyploid). About 78% of the predicted genes occur in chromosome ends, which comprise less than one-half of the genome but account for nearly all of the genetic recombination. Genome duplications occurred at approximately 59 and 13 million years ago, resulting in a highly duplicated genome with nearly 75% of the genes present in multiple copies. The two duplication events were followed by gene diversification and loss, and numerous chromosome rearrangements. An accurate soybean genome sequence will facilitate the identification of the genetic basis of many soybean traits, and accelerate the creation of improved soybean varieties.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmutz, Jeremy -- Cannon, Steven B -- Schlueter, Jessica -- Ma, Jianxin -- Mitros, Therese -- Nelson, William -- Hyten, David L -- Song, Qijian -- Thelen, Jay J -- Cheng, Jianlin -- Xu, Dong -- Hellsten, Uffe -- May, Gregory D -- Yu, Yeisoo -- Sakurai, Tetsuya -- Umezawa, Taishi -- Bhattacharyya, Madan K -- Sandhu, Devinder -- Valliyodan, Babu -- Lindquist, Erika -- Peto, Myron -- Grant, David -- Shu, Shengqiang -- Goodstein, David -- Barry, Kerrie -- Futrell-Griggs, Montona -- Abernathy, Brian -- Du, Jianchang -- Tian, Zhixi -- Zhu, Liucun -- Gill, Navdeep -- Joshi, Trupti -- Libault, Marc -- Sethuraman, Anand -- Zhang, Xue-Cheng -- Shinozaki, Kazuo -- Nguyen, Henry T -- Wing, Rod A -- Cregan, Perry -- Specht, James -- Grimwood, Jane -- Rokhsar, Dan -- Stacey, Gary -- Shoemaker, Randy C -- Jackson, Scott A -- England -- Nature. 2010 Jan 14;463(7278):178-83. doi: 10.1038/nature08670.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉HudsonAlpha Genome Sequencing Center, 601 Genome Way, Huntsville, Alabama 35806, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20075913" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics ; Breeding ; Chromosomes, Plant/genetics ; Evolution, Molecular ; Gene Duplication ; Genes, Duplicate/genetics ; Genes, Plant/genetics ; Genome, Plant/*genetics ; *Genomics ; Molecular Sequence Data ; Multigene Family/genetics ; Phylogeny ; Plant Root Nodulation/genetics ; *Polyploidy ; Quantitative Trait Loci/genetics ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid/genetics ; Soybean Oil/biosynthesis ; Soybeans/*genetics ; Synteny/genetics ; Transcription Factors/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    NINJA connects the co-repressor TOPLESS to jasmonate signalling (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-04-03
    Description: Jasmonoyl-isoleucine (JA-Ile) is a plant hormone that regulates a broad array of plant defence and developmental processes. JA-Ile-responsive gene expression is regulated by the transcriptional activator MYC2 that interacts physically with the jasmonate ZIM-domain (JAZ) repressor proteins. On perception of JA-Ile, JAZ proteins are degraded and JA-Ile-dependent gene expression is activated. The molecular mechanisms by which JAZ proteins repress gene expression remain unknown. Here we show that the Arabidopsis JAZ proteins recruit the Groucho/Tup1-type co-repressor TOPLESS (TPL) and TPL-related proteins (TPRs) through a previously uncharacterized adaptor protein, designated Novel Interactor of JAZ (NINJA). NINJA acts as a transcriptional repressor whose activity is mediated by a functional TPL-binding EAR repression motif. Accordingly, both NINJA and TPL proteins function as negative regulators of jasmonate responses. Our results point to TPL proteins as general co-repressors that affect multiple signalling pathways through the interaction with specific adaptor proteins. This new insight reveals how stress-related and growth-related signalling cascades use common molecular mechanisms to regulate gene expression in plants.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2849182/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2849182/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pauwels, Laurens -- Barbero, Gemma Fernandez -- Geerinck, Jan -- Tilleman, Sofie -- Grunewald, Wim -- Perez, Amparo Cuellar -- Chico, Jose Manuel -- Bossche, Robin Vanden -- Sewell, Jared -- Gil, Eduardo -- Garcia-Casado, Gloria -- Witters, Erwin -- Inze, Dirk -- Long, Jeff A -- De Jaeger, Geert -- Solano, Roberto -- Goossens, Alain -- R01 GM072764/GM/NIGMS NIH HHS/ -- R01 GM072764-06/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Apr 1;464(7289):788-91. doi: 10.1038/nature08854.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Systems Biology, Flanders Institute for Biotechnology (VIB), Technologiepark 927, B-9052 Gent, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20360743" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/cytology/*drug effects/*metabolism ; Arabidopsis Proteins/genetics/*metabolism ; Cyclopentanes/antagonists & inhibitors/*pharmacology ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; Models, Biological ; Oxylipins/antagonists & inhibitors/*pharmacology ; Plants, Genetically Modified ; Protein Binding ; Repressor Proteins/genetics/*metabolism ; Signal Transduction/*drug effects ; Two-Hybrid System Techniques
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    Jasmonate perception by inositol-phosphate-potentiated COI1-JAZ co-receptor (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-10-12
    Description: Jasmonates are a family of plant hormones that regulate plant growth, development and responses to stress. The F-box protein CORONATINE INSENSITIVE 1 (COI1) mediates jasmonate signalling by promoting hormone-dependent ubiquitylation and degradation of transcriptional repressor JAZ proteins. Despite its importance, the mechanism of jasmonate perception remains unclear. Here we present structural and pharmacological data to show that the true Arabidopsis jasmonate receptor is a complex of both COI1 and JAZ. COI1 contains an open pocket that recognizes the bioactive hormone (3R,7S)-jasmonoyl-l-isoleucine (JA-Ile) with high specificity. High-affinity hormone binding requires a bipartite JAZ degron sequence consisting of a conserved alpha-helix for COI1 docking and a loop region to trap the hormone in its binding pocket. In addition, we identify a third critical component of the jasmonate co-receptor complex, inositol pentakisphosphate, which interacts with both COI1 and JAZ adjacent to the ligand. Our results unravel the mechanism of jasmonate perception and highlight the ability of F-box proteins to evolve as multi-component signalling hubs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2988090/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2988090/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheard, Laura B -- Tan, Xu -- Mao, Haibin -- Withers, John -- Ben-Nissan, Gili -- Hinds, Thomas R -- Kobayashi, Yuichi -- Hsu, Fong-Fu -- Sharon, Michal -- Browse, John -- He, Sheng Yang -- Rizo, Josep -- Howe, Gregg A -- Zheng, Ning -- P30 DK056341/DK/NIDDK NIH HHS/ -- P30 DK056341-10/DK/NIDDK NIH HHS/ -- R01 AI068718/AI/NIAID NIH HHS/ -- R01 AI068718-04/AI/NIAID NIH HHS/ -- R01 CA107134/CA/NCI NIH HHS/ -- R01 CA107134-07/CA/NCI NIH HHS/ -- R01 GM057795/GM/NIGMS NIH HHS/ -- R01 GM057795-12/GM/NIGMS NIH HHS/ -- R01AI068718/AI/NIAID NIH HHS/ -- R01GM57795/GM/NIGMS NIH HHS/ -- T32 GM07270/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Nov 18;468(7322):400-5. doi: 10.1038/nature09430. Epub 2010 Oct 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Box 357280, University of Washington, Seattle, Washington 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20927106" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/chemistry/metabolism ; Arabidopsis/chemistry/metabolism ; Arabidopsis Proteins/*chemistry/*metabolism ; Binding Sites ; Crystallography, X-Ray ; Cyclopentanes/chemistry/*metabolism ; F-Box Proteins/chemistry/metabolism ; Indenes/chemistry/metabolism ; Inositol Phosphates/*metabolism ; Isoleucine/analogs & derivatives/chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Oxylipins/chemistry/*metabolism ; Peptide Fragments/chemistry/metabolism ; Plant Growth Regulators/chemistry/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Repressor Proteins/*chemistry/*metabolism ; Signal Transduction
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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