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  • Articles  (36)
  • Kinetics
  • American Association for the Advancement of Science (AAAS)  (36)
  • Blackwell Publishing Ltd
  • 2005-2009  (26)
  • 1975-1979  (10)
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  • Articles  (36)
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  • 1
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    Real-time DNA sequencing from single polymerase molecules (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-11-22
    Description: We present single-molecule, real-time sequencing data obtained from a DNA polymerase performing uninterrupted template-directed synthesis using four distinguishable fluorescently labeled deoxyribonucleoside triphosphates (dNTPs). We detected the temporal order of their enzymatic incorporation into a growing DNA strand with zero-mode waveguide nanostructure arrays, which provide optical observation volume confinement and enable parallel, simultaneous detection of thousands of single-molecule sequencing reactions. Conjugation of fluorophores to the terminal phosphate moiety of the dNTPs allows continuous observation of DNA synthesis over thousands of bases without steric hindrance. The data report directly on polymerase dynamics, revealing distinct polymerization states and pause sites corresponding to DNA secondary structure. Sequence data were aligned with the known reference sequence to assay biophysical parameters of polymerization for each template position. Consensus sequences were generated from the single-molecule reads at 15-fold coverage, showing a median accuracy of 99.3%, with no systematic error beyond fluorophore-dependent error rates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eid, John -- Fehr, Adrian -- Gray, Jeremy -- Luong, Khai -- Lyle, John -- Otto, Geoff -- Peluso, Paul -- Rank, David -- Baybayan, Primo -- Bettman, Brad -- Bibillo, Arkadiusz -- Bjornson, Keith -- Chaudhuri, Bidhan -- Christians, Frederick -- Cicero, Ronald -- Clark, Sonya -- Dalal, Ravindra -- Dewinter, Alex -- Dixon, John -- Foquet, Mathieu -- Gaertner, Alfred -- Hardenbol, Paul -- Heiner, Cheryl -- Hester, Kevin -- Holden, David -- Kearns, Gregory -- Kong, Xiangxu -- Kuse, Ronald -- Lacroix, Yves -- Lin, Steven -- Lundquist, Paul -- Ma, Congcong -- Marks, Patrick -- Maxham, Mark -- Murphy, Devon -- Park, Insil -- Pham, Thang -- Phillips, Michael -- Roy, Joy -- Sebra, Robert -- Shen, Gene -- Sorenson, Jon -- Tomaney, Austin -- Travers, Kevin -- Trulson, Mark -- Vieceli, John -- Wegener, Jeffrey -- Wu, Dawn -- Yang, Alicia -- Zaccarin, Denis -- Zhao, Peter -- Zhong, Frank -- Korlach, Jonas -- Turner, Stephen -- R01HG003710/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Jan 2;323(5910):133-8. doi: 10.1126/science.1162986. Epub 2008 Nov 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pacific Biosciences, 1505 Adams Drive, Menlo Park, CA 94025, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19023044" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Consensus Sequence ; DNA/biosynthesis ; DNA, Circular/chemistry ; DNA, Single-Stranded/chemistry ; DNA-Directed DNA Polymerase/*metabolism ; Deoxyribonucleotides/metabolism ; Enzymes, Immobilized ; Fluorescent Dyes ; Kinetics ; Nanostructures ; Sequence Analysis, DNA/*methods ; Spectrometry, Fluorescence
    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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  • 2
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    De novo computational design of retro-aldol enzymes (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-03-08
    Description: The creation of enzymes capable of catalyzing any desired chemical reaction is a grand challenge for computational protein design. Using new algorithms that rely on hashing techniques to construct active sites for multistep reactions, we designed retro-aldolases that use four different catalytic motifs to catalyze the breaking of a carbon-carbon bond in a nonnatural substrate. Of the 72 designs that were experimentally characterized, 32, spanning a range of protein folds, had detectable retro-aldolase activity. Designs that used an explicit water molecule to mediate proton shuffling were significantly more successful, with rate accelerations of up to four orders of magnitude and multiple turnovers, than those involving charged side-chain networks. The atomic accuracy of the design process was confirmed by the x-ray crystal structure of active designs embedded in two protein scaffolds, both of which were nearly superimposable on the design model.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3431203/" 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/PMC3431203/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jiang, Lin -- Althoff, Eric A -- Clemente, Fernando R -- Doyle, Lindsey -- Rothlisberger, Daniela -- Zanghellini, Alexandre -- Gallaher, Jasmine L -- Betker, Jamie L -- Tanaka, Fujie -- Barbas, Carlos F 3rd -- Hilvert, Donald -- Houk, Kendall N -- Stoddard, Barry L -- Baker, David -- R01 CA097328/CA/NCI NIH HHS/ -- R01 GM049857/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2008 Mar 7;319(5868):1387-91. doi: 10.1126/science.1152692.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18323453" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde-Lyases/*chemistry/metabolism ; *Algorithms ; Binding Sites ; Catalysis ; Catalytic Domain ; Computer Simulation ; Crystallography, X-Ray ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Kinetics ; Models, Molecular ; Protein Conformation ; Protein Engineering
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    The dynamic energy landscape of dihydrofolate reductase catalysis (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-09-16
    Description: We used nuclear magnetic resonance relaxation dispersion to characterize higher energy conformational substates of Escherichia coli dihydrofolate reductase. Each intermediate in the catalytic cycle samples low-lying excited states whose conformations resemble the ground-state structures of preceding and following intermediates. Substrate and cofactor exchange occurs through these excited substates. The maximum hydride transfer and steady-state turnover rates are governed by the dynamics of transitions between ground and excited states of the intermediates. Thus, the modulation of the energy landscape by the bound ligands funnels the enzyme through its reaction cycle along a preferred kinetic path.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boehr, David D -- McElheny, Dan -- Dyson, H Jane -- Wright, Peter E -- GM56879/GM/NIGMS NIH HHS/ -- GM75995/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Sep 15;313(5793):1638-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Skaggs Institute for Chemical Biology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16973882" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalysis ; Escherichia coli/*enzymology ; Kinetics ; Ligands ; Models, Molecular ; NADP/metabolism ; Nuclear Magnetic Resonance, Biomolecular ; Protein Binding ; *Protein Conformation ; Tetrahydrofolate Dehydrogenase/*chemistry/*metabolism ; Tetrahydrofolates/metabolism ; Thermodynamics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Free-solution, label-free molecular interactions studied by back-scattering interferometry (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-22
    Description: Free-solution, label-free molecular interactions were investigated with back-scattering interferometry in a simple optical train composed of a helium-neon laser, a microfluidic channel, and a position sensor. Molecular binding interactions between proteins, ions and protein, and small molecules and protein, were determined with high dynamic range dissociation constants (Kd spanning six decades) and unmatched sensitivity (picomolar Kd's and detection limits of 10,000s of molecules). With this technique, equilibrium dissociation constants were quantified for protein A and immunoglobulin G, interleukin-2 with its monoclonal antibody, and calmodulin with calcium ion Ca2+, a small molecule inhibitor, the protein calcineurin, and the M13 peptide. The high sensitivity of back-scattering interferometry and small volumes of microfluidics allowed the entire calmodulin assay to be performed with 200 picomoles of solute.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bornhop, Darryl J -- Latham, Joey C -- Kussrow, Amanda -- Markov, Dmitry A -- Jones, Richard D -- Sorensen, Henrik S -- R-01 EB0003537-01A2/EB/NIBIB NIH HHS/ -- T32 GM065086/GM/NIGMS NIH HHS/ -- T32-EY07135/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2007 Sep 21;317(5845):1732-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University, VU Station B 351822, Nashville, TN 37235-1822, USA. darryl.bornhop@vanderbilt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17885132" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcineurin/chemistry ; Calcium/chemistry ; Calmodulin/chemistry ; Dimethylpolysiloxanes ; Humans ; Immunoglobulin G/chemistry ; Interferometry/*methods ; Kinetics ; Molecular Sequence Data ; Myosin-Light-Chain Kinase/chemistry ; Peptide Fragments/chemistry ; *Protein Binding ; Rabbits ; Refractometry ; Silicones ; Solutions
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  • 5
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    Physical model for the decay and preservation of marine organic carbon (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-06-02
    Description: Degradation of marine organic carbon provides a major source of atmospheric carbon dioxide, whereas preservation in sediments results in accumulation of oxygen. These processes involve the slow decay of chemically recalcitrant compounds and physical protection. To assess the importance of physical protection, we constructed a reaction-diffusion model in which organic matter differs only in its accessibility to microbial degradation but not its intrinsic reactivity. The model predicts that organic matter decays logarithmically with time t and that decay rates decrease approximately as 0.2 x t(-1) until burial. Analyses of sediment-core data are consistent with these predictions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rothman, Daniel H -- Forney, David C -- New York, N.Y. -- Science. 2007 Jun 1;316(5829):1325-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. dhr@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17540901" target="_blank"〉PubMed〈/a〉
    Keywords: Aluminum Silicates ; Bacteria/*metabolism ; *Biodegradation, Environmental ; *Carbon/metabolism ; Databases, Factual ; Diffusion ; Enzymes/metabolism ; *Geologic Sediments/chemistry/microbiology ; Hydrolysis ; Kinetics ; Mathematics ; *Models, Theoretical ; Oceans and Seas ; *Organic Chemicals/chemistry/metabolism ; Oxygen/analysis ; *Seawater
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  • 6
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    Methyl salicylate is a critical mobile signal for plant systemic acquired resistance (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-10-06
    Description: In plants, the mobile signal for systemic acquired resistance (SAR), an organism-wide state of enhanced defense to subsequent infections, has been elusive. By stimulating immune responses in mosaic tobacco plants created by grafting different genetic backgrounds, we showed that the methyl salicylate (MeSA) esterase activity of salicylic acid-binding protein 2 (SABP2), which converts MeSA into salicylic acid (SA), is required for SAR signal perception in systemic tissue, the tissue that does not receive the primary (initial) infection. Moreover, in plants expressing mutant SABP2 with unregulated MeSA esterase activity in SAR signal-generating, primary infected leaves, SAR was compromised and the associated increase in MeSA levels was suppressed in primary infected leaves, their phloem exudates, and systemic leaves. SAR was also blocked when SA methyl transferase (which converts SA to MeSA) was silenced in primary infected leaves, and MeSA treatment of lower leaves induced SAR in upper untreated leaves. Therefore, we conclude that MeSA is a SAR signal in tobacco.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Park, Sang-Wook -- Kaimoyo, Evans -- Kumar, Dhirendra -- Mosher, Stephen -- Klessig, Daniel F -- New York, N.Y. -- Science. 2007 Oct 5;318(5847):113-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17916738" target="_blank"〉PubMed〈/a〉
    Keywords: Esterases/genetics/metabolism ; Feedback, Physiological ; Kinetics ; Mixed Function Oxygenases/genetics/metabolism ; Mutation ; Phloem/metabolism ; Plant Diseases/*immunology/virology ; Plant Leaves/metabolism/virology ; Plant Proteins/genetics/metabolism ; Plants, Genetically Modified ; Salicylates/*metabolism ; Salicylic Acid/metabolism ; *Signal Transduction ; Tobacco/immunology/*metabolism/virology ; Tobacco Mosaic Virus/*physiology ; Virus Replication
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Small-molecule activators of a proenzyme (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-11-07
    Description: Virtually all of the 560 human proteases are stored as inactive proenyzmes and are strictly regulated. We report the identification and characterization of the first small molecules that directly activate proenzymes, the apoptotic procaspases-3 and -6. It is surprising that these compounds induce autoproteolytic activation by stabilizing a conformation that is both more active and more susceptible to intermolecular proteolysis. These procaspase activators bypass the normal upstream proapoptotic signaling cascades and induce rapid apoptosis in a variety of cell lines. Systematic biochemical and biophysical analyses identified a cluster of mutations in procaspase-3 that resist small-molecule activation both in vitro and in cells. Compounds that induce gain of function are rare, and the activators reported here will enable direct control of the executioner caspases in apoptosis and in cellular differentiation. More generally, these studies presage the discovery of other proenzyme activators to explore fundamental processes of proenzyme activation and their fate-determining roles in biology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2886848/" 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/PMC2886848/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolan, Dennis W -- Zorn, Julie A -- Gray, Daniel C -- Wells, James A -- F32 CA119641/CA/NCI NIH HHS/ -- F32 CA119641-03/CA/NCI NIH HHS/ -- R01 CA136779/CA/NCI NIH HHS/ -- R21 N5057022/PHS HHS/ -- New York, N.Y. -- Science. 2009 Nov 6;326(5954):853-8. doi: 10.1126/science.1177585.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmaceutical Chemistry, University of California, San Francisco, Byers Hall, 1700 4th Street, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892984" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Benzopyrans/chemistry/*metabolism/pharmacology ; Biocatalysis ; Caspase 3/chemistry/genetics/*metabolism ; Caspase 6/chemistry/genetics/*metabolism ; Caspase Inhibitors ; Catalytic Domain ; Cell Line, Transformed ; Cell Line, Tumor ; Cells, Cultured ; Enzyme Activation ; Enzyme Activators/chemistry/*metabolism/pharmacology ; Enzyme Inhibitors/metabolism/pharmacology ; Enzyme Precursors/antagonists & inhibitors/chemistry/genetics/*metabolism ; Granzymes/metabolism ; Humans ; Imidazoles/chemistry/*metabolism/pharmacology ; Kinetics ; Mice ; Molecular Structure ; Mutagenesis ; Pyridines/chemistry/*metabolism/pharmacology ; Signal Transduction ; Small Molecule Libraries/chemistry/metabolism
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  • 8
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    Small-molecule inhibition of TNF-alpha (2005)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2005-11-15
    Description: We have identified a small-molecule inhibitor of tumor necrosis factor alpha (TNF-alpha) that promotes subunit disassembly of this trimeric cytokine family member. The compound inhibits TNF-alpha activity in biochemical and cell-based assays with median inhibitory concentrations of 22 and 4.6 micromolar, respectively. Formation of an intermediate complex between the compound and the intact trimer results in a 600-fold accelerated subunit dissociation rate that leads to trimer dissociation. A structure solved by x-ray crystallography reveals that a single compound molecule displaces a subunit of the trimer to form a complex with a dimer of TNF-alpha subunits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉He, Molly M -- Smith, Annemarie Stroustrup -- Oslob, Johan D -- Flanagan, William M -- Braisted, Andrew C -- Whitty, Adrian -- Cancilla, Mark T -- Wang, Jun -- Lugovskoy, Alexey A -- Yoburn, Josh C -- Fung, Amy D -- Farrington, Graham -- Eldredge, John K -- Day, Eric S -- Cruz, Leslie A -- Cachero, Teresa G -- Miller, Stephan K -- Friedman, Jessica E -- Choong, Ingrid C -- Cunningham, Brian C -- New York, N.Y. -- Science. 2005 Nov 11;310(5750):1022-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sunesis Pharmaceuticals, Incorporated, 341 Oyster Point Boulevard, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16284179" target="_blank"〉PubMed〈/a〉
    Keywords: Biotinylation ; Chemistry, Physical ; Crystallography, X-Ray ; Dimerization ; Fluorescence ; Hydrogen/chemistry ; Hydrophobic and Hydrophilic Interactions ; Indoles/chemical synthesis/*chemistry/*pharmacology ; Kinetics ; Mass Spectrometry ; Models, Chemical ; Models, Molecular ; Molecular Conformation ; Molecular Structure ; Physicochemical Phenomena ; Protein Conformation ; Protein Subunits/chemistry ; Receptors, Tumor Necrosis Factor, Type I/metabolism ; Tumor Necrosis Factor-alpha/*antagonists & inhibitors/*chemistry/metabolism
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  • 9
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    Atomic description of an enzyme reaction dominated by proton tunneling (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-04-15
    Description: We present an atomic-level description of the reaction chemistry of an enzyme-catalyzed reaction dominated by proton tunneling. By solving structures of reaction intermediates at near-atomic resolution, we have identified the reaction pathway for tryptamine oxidation by aromatic amine dehydrogenase. Combining experiment and computer simulation, we show proton transfer occurs predominantly to oxygen O2 of Asp(128)beta in a reaction dominated by tunneling over approximately 0.6 angstroms. The role of long-range coupled motions in promoting tunneling is controversial. We show that, in this enzyme system, tunneling is promoted by a short-range motion modulating proton-acceptor distance and no long-range coupled motion is required.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Masgrau, Laura -- Roujeinikova, Anna -- Johannissen, Linus O -- Hothi, Parvinder -- Basran, Jaswir -- Ranaghan, Kara E -- Mulholland, Adrian J -- Sutcliffe, Michael J -- Scrutton, Nigel S -- Leys, David -- New York, N.Y. -- Science. 2006 Apr 14;312(5771):237-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Manchester Interdisciplinary Biocentre, University of Manchester, Jackson's Mill, Post Office Box 88, Manchester M60 1QD, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16614214" target="_blank"〉PubMed〈/a〉
    Keywords: Alcaligenes faecalis/*enzymology ; Aspartic Acid/chemistry ; Binding Sites ; Catalysis ; Chemistry, Physical ; Computer Simulation ; Crystallography, X-Ray ; Kinetics ; Models, Chemical ; Motion ; Oxidation-Reduction ; Oxidoreductases Acting on CH-NH Group Donors/*chemistry/*metabolism ; Oxygen/chemistry ; Physicochemical Phenomena ; *Protons ; Temperature ; Thermodynamics ; Tryptamines/*metabolism ; Water/chemistry
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  • 10
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    Biochemistry. Photosynthesis from the protein's perspective (2007)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2007-05-05
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3984475/" 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/PMC3984475/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Skourtis, Spiros S -- Beratan, David N -- R01 GM048043/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 May 4;316(5825):703-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, University of Cyprus, Nicosia 1678, Cyprus. skourtis@ucy.ac.cy〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17478711" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*chemistry/*metabolism ; Bacteriochlorophylls/metabolism ; *Electron Transport ; Kinetics ; Light ; Models, Chemical ; *Photosynthesis ; Photosynthetic Reaction Center Complex Proteins/*chemistry/*metabolism ; Rhodobacter sphaeroides/genetics/*metabolism ; Spectrum Analysis ; Temperature ; Thermodynamics ; Tryptophan/chemistry
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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