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  • Molecular Sequence Data  (3)
  • EARTH RESOURCES AND REMOTE SENSING
  • 2005-2009
  • 1990-1994  (5)
  • 1994  (5)
  • 1
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    Microtubule dynamics modulated by guanosine triphosphate hydrolysis activity of beta-tubulin (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-05-06
    Description: Microtubule dynamic instability underlies many cellular functions, including spindle morphogenesis and chromosome movement. The role of guanosine triphosphate (GTP) hydrolysis in dynamic instability was investigated by introduction of four mutations into yeast beta-tubulin at amino acids 103 to 109, a site thought to participate in GTP hydrolysis. Three of the mutations increased both the assembly-dependent rate of GTP hydrolysis and the average length of steady-state microtubules over time, a measure of dynamic instability. The fourth mutation did not substantially affect the rate of GTP hydrolysis or the steady-state microtubule lengths. These results demonstrate that the rate of GTP hydrolysis can modulate microtubule length and hence dynamic instability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, A -- Sage, C R -- Dougherty, C A -- Farrell, K W -- GM 41751/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 May 6;264(5160):839-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of California, Santa Barbara 93106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8171338" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; GTP Phosphohydrolases/*metabolism ; Guanosine Triphosphate/*metabolism ; Hydrolysis ; Microtubules/metabolism/*physiology/ultrastructure ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Saccharomyces cerevisiae/chemistry ; Tubulin/chemistry/genetics/*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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    Ligands for EPH-related receptor tyrosine kinases that require membrane attachment or clustering for activity (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-04
    Description: The EPH-related transmembrane tyrosine kinases constitute the largest known family of receptor-like tyrosine kinases, with many members displaying specific patterns of expression in the developing and adult nervous system. A family of cell surface-bound ligands exhibiting distinct, but overlapping, specificities for these EPH-related kinases was identified. These ligands were unable to act as conventional soluble factors. However, they did function when presented in membrane-bound form, suggesting that they require direct cell-to-cell contact to activate their receptors. Membrane attachment may serve to facilitate ligand dimerization or aggregation, because antibody-mediated clustering activated previously inactive soluble forms of these ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S -- Gale, N W -- Aldrich, T H -- Maisonpierre, P C -- Lhotak, V -- Pawson, T -- Goldfarb, M -- Yancopoulos, G D -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):816-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, Tarrytown, NY 10591.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973638" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Cell Membrane/*metabolism ; *DNA-Binding Proteins ; Ephrin-A1 ; Ephrin-B1 ; Humans ; Ligands ; Membrane Proteins/chemistry/*metabolism ; Molecular Sequence Data ; Neurons/metabolism ; Phosphorylation ; Proteins/chemistry/*metabolism ; *Proto-Oncogene Proteins ; Receptor Protein-Tyrosine Kinases/*metabolism ; *Receptor, EphA5 ; Recombinant Fusion Proteins/metabolism ; Retroviridae Proteins, Oncogenic/*metabolism ; Solubility ; *Transcription Factors ; Transfection ; Tumor Cells, Cultured ; ets-Domain Protein Elk-1
    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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  • 3
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    An osmosensing signal transduction pathway in mammalian cells (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-08-05
    Description: The osmotic balance between the cytoplasmic and extracellular compartments of cells is critical for the control of cell volume. A mammalian protein kinase, Jnk, which is a distant relative of the mitogen-activated protein kinase group, was activated by phosphorylation on threonine and tyrosine in osmotically shocked cells. The activation of Jnk may be relevant to the biological response to osmotic shock because the expression of human Jnk in the yeast Saccharomyces cerevisiae rescued a defect in growth on hyper-osmolar media. These data indicate that related protein kinases may mediate osmosensing signal transduction in yeast and mammalian cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galcheva-Gargova, Z -- Derijard, B -- Wu, I H -- Davis, R J -- New York, N.Y. -- Science. 1994 Aug 5;265(5173):806-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Massachusetts Medical School, Worcester 01605.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8047888" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; CHO Cells ; Calcium-Calmodulin-Dependent Protein Kinases/genetics ; Cricetinae ; Cricetulus ; Enzyme Activation ; Genetic Complementation Test ; JNK Mitogen-Activated Protein Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Osmotic Pressure ; Protein-Serine-Threonine Kinases/*physiology ; Saccharomyces cerevisiae/genetics ; *Saccharomyces cerevisiae Proteins ; Sequence Homology, Amino Acid ; Signal Transduction/*physiology ; Water-Electrolyte Balance/*physiology
    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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  • 4
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    Remote sensing for hurricane Andrew impact assessment (1994)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Stennis Space Center personnel flew a Learjet equipped with instrumentation designed to acquire imagery in many spectral bands into areas most damaged by Hurricane Andrew. The calibrated airborne multispectral scanner (CAMS), a NASA-developed sensor, and a Zeiss camera acquired images of these areas. The information derived from the imagery was used to assist Florida officials in assessing the devastation caused by the hurricane. The imagery provided the relief teams with an assessment of the debris covering roads and highways so cleanup plans could be prioritized. The imagery also mapped the level of damage in residential and commercial areas of southern Florida and provided maps of beaches and land cover for determination of beach loss and vegetation damage, particularly the mangrove population. Stennis Space Center personnel demonstrated the ability to respond quickly and the value of such response in an emergency situation. The digital imagery from the CAMS can be processed, analyzed, and developed into products for field crews faster than conventional photography. The resulting information is versatile and allows for rapid updating and editing. Stennis Space Center and state officials worked diligently to compile information to complete analyses of the hurricane's impact.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA, Washington, Technology 2003: The Fourth National Technology Transfer Conference and Exposition, Volume 2; p 388
    Format: application/pdf
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  • 5
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    Remote sensing for urban planning (1994)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Utility companies are challenged to provide services to a highly dynamic customer base. With factory closures and shifts in employment becoming a routine occurrence, the utility industry must develop new techniques to maintain records and plan for expected growth. BellSouth Telecommunications, the largest of the Bell telephone companies, currently serves over 13 million residences and 2 million commercial customers. Tracking the movement of customers and scheduling the delivery of service are major tasks for BellSouth that require intensive manpower and sophisticated information management techniques. Through NASA's Commercial Remote Sensing Program Office, BellSouth is investigating the utility of remote sensing and geographic information system techniques to forecast residential development. This paper highlights the initial results of this project, which indicate a high correlation between the U.S. Bureau of Census block group statistics and statistics derived from remote sensing data.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA, Washington, Technology 2003: The Fourth National Technology Transfer Conference and Exposition, Volume 2; p 389-393
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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