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  • 1
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    Control of TRAIL-induced apoptosis by a family of signaling and decoy receptors (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-08-08
    Description: TRAIL (also called Apo2L) belongs to the tumor necrosis factor family, activates rapid apoptosis in tumor cells, and binds to the death-signaling receptor DR4. Two additional TRAIL receptors were identified. The receptor designated death receptor 5 (DR5) contained a cytoplasmic death domain and induced apoptosis much like DR4. The receptor designated decoy receptor 1 (DcR1) displayed properties of a glycophospholipid-anchored cell surface protein. DcR1 acted as a decoy receptor that inhibited TRAIL signaling. Thus, a cell surface mechanism exists for the regulation of cellular responsiveness to pro-apoptotic stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheridan, J P -- Marsters, S A -- Pitti, R M -- Gurney, A -- Skubatch, M -- Baldwin, D -- Ramakrishnan, L -- Gray, C L -- Baker, K -- Wood, W I -- Goddard, A D -- Godowski, P -- Ashkenazi, A -- New York, N.Y. -- Science. 1997 Aug 8;277(5327):818-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology, Genentech, South San Francisco, CA 94080-4918, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9242611" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Apoptosis ; Apoptosis Regulatory Proteins ; Cell Membrane/metabolism ; Cells, Cultured ; GPI-Linked Proteins ; Glycosylphosphatidylinositols/metabolism ; HeLa Cells ; Humans ; Ligands ; Membrane Glycoproteins/*metabolism ; Molecular Sequence Data ; NF-kappa B/metabolism ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; Signal Transduction ; TNF-Related Apoptosis-Inducing Ligand ; Transfection ; Tumor Cells, Cultured ; Tumor Necrosis Factor Decoy Receptors ; Tumor Necrosis Factor-alpha/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Control of cell fate by a deubiquitinating enzyme encoded by the fat facets gene (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-12-15
    Description: Ubiquitin is a highly conserved polypeptide found in all eukaryotes. The major function of ubiquitin is to target proteins for complete or partial degradation by a multisubunit protein complex called the proteasome. Here, the Drosophila fat facets gene, which is required for the appropriate determination of particular cells in the fly eye, was shown to encode a ubiquitin-specific protease (Ubp), an enzyme that cleaves ubiquitin from ubiquitin-protein conjugates. The Fat facets protein (FAF) acts as a regulatory Ubp that prevents degradation of its substrate by the proteasome. Flies bearing fat facets gene mutations were used to show that a Ubp is cell type--and substrate-specific and a regulator of cell fate decisions in a multicellular organism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Y -- Baker, R T -- Fischer-Vize, J A -- New York, N.Y. -- Science. 1995 Dec 15;270(5243):1828-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Texas, Austin 78712, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8525378" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; *Cell Differentiation/genetics ; Cysteine/metabolism ; Drosophila/embryology/enzymology/genetics ; Endopeptidases/genetics/*metabolism ; Escherichia coli ; Eye/embryology ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oligodeoxyribonucleotides ; Recombinant Fusion Proteins/genetics/metabolism ; Ubiquitins/*metabolism ; beta-Galactosidase/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Effects of the obese gene product on body weight regulation in ob/ob mice (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-07-28
    Description: C57BL/6J mice with a mutation in the obese (ob) gene are obese, diabetic, and exhibit reduced activity, metabolism, and body temperature. Daily intraperitoneal injection of these mice with recombinant OB protein lowered their body weight, percent body fat, food intake, and serum concentrations of glucose and insulin. In addition, metabolic rate, body temperature, and activity levels were increased by this treatment. None of these parameters was altered beyond the level observed in lean controls, suggesting that the OB protein normalized the metabolic status of the ob/ob mice. Lean animals injected with OB protein maintained a smaller weight loss throughout the 28-day study and showed no changes in any of the metabolic parameters. These data suggest that the OB protein regulates body weight and fat deposition through effects on metabolism and appetite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pelleymounter, M A -- Cullen, M J -- Baker, M B -- Hecht, R -- Winters, D -- Boone, T -- Collins, F -- New York, N.Y. -- Science. 1995 Jul 28;269(5223):540-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Amgen, Inc., Thousand Oaks, CA 91320, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7624776" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/drug effects ; Analysis of Variance ; Animals ; Blood Glucose/analysis ; Body Composition/drug effects ; Body Temperature/drug effects ; Dose-Response Relationship, Drug ; Drinking/drug effects ; Eating/*drug effects ; Energy Metabolism/drug effects ; Female ; Insulin/blood ; Leptin ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Motor Activity/drug effects ; Obesity/genetics/*physiopathology ; Oxygen Consumption/drug effects ; Proteins/genetics/*pharmacology ; Recombinant Proteins/pharmacology ; Weight Loss/*drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Molecular genetics of plant disease resistance (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-05-05
    Description: Plant breeders have used disease resistance genes (R genes) to control plant disease since the turn of the century. Molecular cloning of R genes that enable plants to resist a diverse range of pathogens has revealed that the proteins encoded by these genes have several features in common. These findings suggest that plants may have evolved common signal transduction mechanisms for the expression of resistance to a wide range of unrelated pathogens. Characterization of the molecular signals involved in pathogen recognition and of the molecular events that specify the expression of resistance may lead to novel strategies for plant disease control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Staskawicz, B J -- Ausubel, F M -- Baker, B J -- Ellis, J G -- Jones, J D -- New York, N.Y. -- Science. 1995 May 5;268(5211):661-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology, University of California, Berkeley 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7732374" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Genes, Plant ; Genetic Engineering ; Immunity, Innate/genetics ; Molecular Sequence Data ; Plant Diseases/*genetics/microbiology ; Signal Transduction ; Virulence/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Selective trafficking of KNOTTED1 homeodomain protein and its mRNA through plasmodesmata (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-12-22
    Description: Plasmodesmata are intercellular organelles in plants that establish cytoplasmic continuity between neighboring cells. Microinjection studies showed that plasmodesmata facilitate the cell-to-cell transport of a plant-encoded transcription factor, KNOTTED1 (KN1). KN1 can also mediate the selective plasmodesmal trafficking of kn1 sense RNA. The emerging picture of plant development suggests that cell fate is determined at least in part by supracellular controls responding to cellular position as well as lineage. One of the mechanisms that enables the necessary intercellular communication appears to involve transfer of informational molecules (proteins and RNA) through plasmodesmata.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lucas, W J -- Bouche-Pillon, S -- Jackson, D P -- Nguyen, L -- Baker, L -- Ding, B -- Hake, S -- New York, N.Y. -- Science. 1995 Dec 22;270(5244):1980-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Plant Biology, University of California, Davis 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8533088" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Biological Transport ; *Cell Communication ; Homeodomain Proteins/*metabolism ; Molecular Sequence Data ; Organelles/*metabolism ; Plant Proteins/*metabolism ; Plant Viral Movement Proteins ; Plants/*metabolism/ultrastructure ; Plants, Toxic ; RNA, Plant/genetics/*metabolism ; RNA, Viral/genetics/metabolism ; Tobacco/metabolism/ultrastructure ; Viral Proteins/metabolism ; Zea mays/metabolism/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    A description of the solar wind-magnetosphere coupling based on nonlinear filters (1995)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: A nonlinear filtering method is introduced for the study of the solar wind -- magnetosphere coupling and related to earlier linear techniques. The filters are derived from the magnetospheric state, a representation of the magnetospheric conditions in terms of a few global variables, here the auroral electrojet indices. The filters also couple to the input, a representation of the solar wind variables, here the rectified electric field. Filter-based iterative prediction of the indices has been obtained for up to 20 hours. The prediction is stable with respect to perturbations in the initial magnetospheric state; these decrease exponentially at the rate of 30/min. The performance of the method is examined for a wide range of parameters and is superior to that of other linear and nonlinear techniques. In the magnetospheric state representation the coupling is modeled as a small number of nonlinear equations under a time-dependent input.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 100; A3; p. 3495-3512
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  • 7
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    Nonlinear ARMA models for the D(st) index and their physical interpretation (1996)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Time series models successfully reproduce or predict geomagnetic activity indices from solar wind parameters. A method is presented that converts a type of nonlinear filter, the nonlinear Autoregressive Moving Average (ARMA) model to the nonlinear damped oscillator physical model. The oscillator parameters, the growth and decay, the oscillation frequencies and the coupling strength to the input are derived from the filter coefficients. Mathematical methods are derived to obtain unique and consistent filter coefficients while keeping the prediction error low. These methods are applied to an oscillator model for the Dst geomagnetic index driven by the solar wind input. A data set is examined in two ways: the model parameters are calculated as averages over short time intervals, and a nonlinear ARMA model is calculated and the model parameters are derived as a function of the phase space.
    Keywords: Geophysics
    Type: ; 639-644
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  • 8
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    Geopotential Error Analysis from Satellite Gradiometer and Global Positioning System Observables on Parallel Architecture (1997)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The recovery of a high resolution geopotential from satellite gradiometer observations motivates the examination of high performance computational techniques. The primary subject matter addresses specifically the use of satellite gradiometer and GPS observations to form and invert the normal matrix associated with a large degree and order geopotential solution. Memory resident and out-of-core parallel linear algebra techniques along with data parallel batch algorithms form the foundation of the least squares application structure. A secondary topic includes the adoption of object oriented programming techniques to enhance modularity and reusability of code. Applications implementing the parallel and object oriented methods successfully calculate the degree variance for a degree and order 110 geopotential solution on 32 processors of the Cray T3E. The memory resident gradiometer application exhibits an overall application performance of 5.4 Gflops, and the out-of-core linear solver exhibits an overall performance of 2.4 Gflops. The combination solution derived from a sun synchronous gradiometer orbit produce average geoid height variances of 17 millimeters.
    Keywords: Geophysics
    Type: NASA/CR-97-205884 , NAS 1.26:205884 , CSR-97-5
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  • 9
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    Solar Wind-Magnetosphere Coupling During an Isolated Substorm Event: A Multispacecraft ISTP Study (1997)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Multispacecraft data from the upstream solar wind, polar cusp, and inner magnetotail are used to show that the polar ionosphere responds within a few minutes to a southward IMF turning, whereas the inner tail signatures are visible within ten min from the southward turning. Comparison of two subsequent substorm onsets, one during southward and the other during northward IMF, demonstrates the dependence of the expansion phase characteristics on the external driving conditions. Both onsets are shown to have initiated in the midtail, with signatures in the inner tail and auroral oval following a few minutes later.
    Keywords: Geophysics
    Type: NASA-CR-205242 , Paper-97GL00816 , NAS 1.26:205242 , Geophysical Research Letters (ISSN 0094-8534); 24; 8; 983-986
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  • 10
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    Comparison of empirical magnetic field models and global MHD simulations: The near-tail currents (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The tail currents predicted by empirical magnetic field models and global MHD simulations are compared. It is shown that the near-Earth currents obtained from the MHD simulations are much weaker than the currents predicted by the Tsyganenko models, primarily because the ring current is not properly represented in the simulations. On the other hand, in the mid-tail and distant tail the lobe field strength predicted by the simulations is comparable to what is observed at about 50 R(sub E) distance, significantly larger than the very low lobe field values predicted by the Tsyganenko models at that distance. Ways to improve these complementary approaches to model the actual magnetospheric configuration are discussed.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters (ISSN 0094-8276); 22; 6; p. 675-678
    Format: text
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