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  • 1
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    Prentice Hall
    In:  Englewood Cliffs, New Jersey, 340 pp., Prentice Hall, vol. 34, no. 22, pp. 65-70, (ISBN 0-691-12183-4, 2005 (481 pp. + CD-ROM))
    Publication Date: 1974
    Keywords: Inversion ; Textbook of geophysics ; Textbook of mathematics
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  • 2
    Publication Date: 2002-08-31
    Description: The Escherichia coli catabolite activator protein (CAP) activates transcription at P(lac), P(gal), and other promoters through interactions with the RNA polymerase alpha subunit carboxyl-terminal domain (alphaCTD). We determined the crystal structure of the CAP-alphaCTD-DNA complex at a resolution of 3.1 angstroms. CAP makes direct protein-protein interactions with alphaCTD, and alphaCTD makes direct protein-DNA interactions with the DNA segment adjacent to the DNA site for CAP. There are no large-scale conformational changes in CAP and alphaCTD, and the interface between CAP and alphaCTD is small. These findings are consistent with the proposal that activation involves a simple "recruitment" mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benoff, Brian -- Yang, Huanwang -- Lawson, Catherine L -- Parkinson, Gary -- Liu, Jinsong -- Blatter, Erich -- Ebright, Yon W -- Berman, Helen M -- Ebright, Richard H -- GM21589/GM/NIGMS NIH HHS/ -- GM41376/GM/NIGMS NIH HHS/ -- GM64375/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Aug 30;297(5586):1562-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Waksman Institute and Department of Chemistry, Howard Hughes Medical Institute, Rutgers University, Piscataway, NJ 08854, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12202833" target="_blank"〉PubMed〈/a〉
    Keywords: Crystallography, X-Ray ; Cyclic AMP Receptor Protein/*chemistry/metabolism/physiology ; DNA/*chemistry/metabolism ; DNA-Directed RNA Polymerases/*chemistry/metabolism/physiology ; Macromolecular Substances ; Models, Molecular ; Nucleic Acid Conformation ; Protein Binding ; Protein Conformation ; Structure-Activity Relationship ; *Transcription, Genetic ; Transcriptional Activation
    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
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The crystal structure of the trp repressor/operator complex shows an extensive contact surface, including 24 direct and 6 solvent-mediated hydrogen bonds to the phosphate groups of the DNA. There are no direct hydrogen bonds or non-polar contacts to the bases that can explain the repressor's ...
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Comparison of the crystal structure of inactive unliganded trp aporepressor with that of trp repressor shows that binding tryptophan activates the dimer a thousandfold by moving two symmetrically-disposed flexible bihelical motifs. These flexible 'DNA-reading heads' flank a highly inflexible core ...
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2013-08-31
    Description: Definite integrals are evaluated for the cardinal functions of an interpolation method which provides C sup 1 continuity over a triangular grid.
    Keywords: NUMERICAL ANALYSIS
    Type: NASA-CR-149277 , JPL-TM-33-808
    Format: application/pdf
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  • 6
    Publication Date: 2013-08-31
    Description: A procedure is described for computing an initial feasible vector, x sub 0, for Stoer's algorithm for solving the linear least squares problem subject to linear equality and inequality constraints. The procedure described fits well with Stoer's algorithm since much of the computation performed to determine x sub 0 accomplishes initializing transformations of the problem data, which would otherwise be done in Stoer's algorithm after being given an x sub 0.
    Keywords: NUMERICAL ANALYSIS
    Type: JPL-TM-33-724 , NASA-CR-142189
    Format: application/pdf
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  • 7
    Publication Date: 2013-08-31
    Description: A set of FORTRAN callable subprograms are proposed which will be useful in the development of efficient portable ANSI FORTRAN subprograms and applications programs in the area of linear algebra.
    Keywords: MATHEMATICS
    Type: JPL-TM-33-660 , NASA-CR-136216
    Format: application/pdf
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  • 8
    Publication Date: 2013-08-31
    Description: A matrix having a high percentage of zero elements is called spares. In the solution of systems of linear equations or linear least squares problems involving large sparse matrices, significant saving of computer cost can be achieved by taking advantage of the sparsity. The conjugate gradient algorithm and a set of related algorithms are described.
    Keywords: MATHEMATICS
    Type: JPL-TM-33-627 , NASA-CR-133231
    Format: application/pdf
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  • 9
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    In:  CASI
    Publication Date: 2013-08-31
    Description: An elementary derivation and a complete description is given of an algorithm for interpolation over a plane triangle when function values and first partial derivatives are given at the vertices. The method gives C1 continuity with neighboring triangles. The interpolation method is mathematically equivalent to one that has been discussed previously in the literature; however, the algorithmic form given here is more efficient than has previously been described.
    Keywords: NUMERICAL ANALYSIS
    Type: JPL-TM-33-770 , NASA-CR-147946
    Format: application/pdf
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  • 10
    facet.materialart.
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    In:  CASI
    Publication Date: 2013-08-31
    Description: A number of mathematical results relevant to the problem of constructing a triangulation, i.e., a simplicial tessellation, of the convex hull of an arbitrary finite set of points in n-space are described. The principal results achieved are: (1) a set of n+2 points in n-space may be triangulated in at most 2 different ways; (2) the sphere test defined in this report selects a preferred one of these two triangulations; (3) a set of parameters is defined that permits the characterization and enumeration of all sets of n+2 points in n-space that are significantly different from the point of view of their possible triangulation; (4) the local sphere test induces a global sphere test property for a triangulation; and (5) a triangulation satisfying the global sphere property is dual to the n-dimensional Dirichlet tesselation, i.e., it is a Delaunay triangulation.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA-CR-176535 , JPL-PUB-85-42 , NAS 1.26:176535
    Format: application/pdf
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