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  • Quantum optics, physics of lasers, nonlinear optics, classical optics  (4)
  • Amino Acid Sequence  (3)
  • Atomic and molecular collisions and interactions  (2)
  • American Physical Society (APS)  (6)
  • American Association for the Advancement of Science (AAAS)  (3)
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  • 1
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    Quantum interference between resonant and nonresonant photorecombination (2016)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2016-03-15
    Beschreibung: Author(s): B. Tu, J. Xiao, K. Yao, Y. Shen, Y. Yang, D. Lu, W. X. Li, M. L. Qiu, X. Wang, C. Y. Chen, Y. Fu, B. Wei, C. Zheng, L. Y. Huang, B. H. Zhang, Y. J. Tang, R. Hutton, and Y. Zou In this paper, we present experimental and theoretical studies on the interference between resonant and nonresonant photorecombinations for the main resonances of ground-state He-, Be-, B-, C-, N-, and O-like W ions. Experiments were done using a fast electron energy scanning technique at the upgrad… [Phys. Rev. A 93, 032707] Published Mon Mar 14, 2016
    Schlagwort(e): Atomic and molecular collisions and interactions
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
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  • 2
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    Observation of an extremely-long-lived metastable level in a Ti-like system via an $L$-shell dielectronic recombination measurement in highly charged $3{d}^{n}$ ions of tungsten (2017)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2017-09-08
    Beschreibung: Author(s): B. Tu, K. Yao, Y. Shen, Y. Yang, M. C. Li, T. H. Xu, Q. F. Lu, D. Lu, X. Wang, C. Y. Chen, Y. Fu, B. Wei, C. Zheng, L. Y. Huang, G. Xiong, J. M. Yang, B. H. Zhang, Y. J. Tang, R. Hutton, Y. Zou, and J. Xiao In this paper we report the L -shell dielectronic recombination measurement in highly charged 3 d n ions of tungsten by employing a fast electron beam-energy scanning technique at Shanghai EBIT. The studies of the LMM DR resonance strengths of Ar-like up to Mn-like tungsten were implemented through the... [Phys. Rev. A 96, 032705] Published Thu Sep 07, 2017
    Schlagwort(e): Atomic and molecular collisions and interactions
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
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  • 3
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    Ultrashort pulses and short-pulse equations in 2+1 dimensions (2012)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2012-08-24
    Beschreibung: Author(s): Y. Shen, N. Whitaker, P. G. Kevrekidis, N. L. Tsitsas, and D. J. Frantzeskakis In this paper, we derive and study two versions of the short pulse equation (SPE) in (2+1) dimensions. Using Maxwell's equations as a starting point, and suitable Kramers-Kronig formulas for the permittivity and permeability of the medium, which are relevant, e.g., to left-handed metamaterials and d... [Phys. Rev. A 86, 023841] Published Thu Aug 23, 2012
    Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
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  • 4
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    Evidence of dark solitons in all-normal-dispersion-fiber lasers (2013)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2013-07-30
    Beschreibung: Author(s): D. Y. Tang, L. Li, Y. F. Song, L. M. Zhao, H. Zhang, and D. Y. Shen In a recent paper we reported dark pulse emission of an all-normal-dispersion-fiber laser [ Zhang, Tang, Zhao and Wu Phys. Rev. A 80 045803 (2009) ]. However, the formation mechanism of the dark pulse in the laser was unclear due to the limited temporal resolution of the measurement system. Using an... [Phys. Rev. A 88, 013849] Published Mon Jul 29, 2013
    Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
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  • 5
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    Conversion of 5-methylcytosine to 5-hydroxymethylcytosine in mammalian DNA by MLL partner TET1 (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2009-04-18
    Beschreibung: DNA cytosine methylation is crucial for retrotransposon silencing and mammalian development. In a computational search for enzymes that could modify 5-methylcytosine (5mC), we identified TET proteins as mammalian homologs of the trypanosome proteins JBP1 and JBP2, which have been proposed to oxidize the 5-methyl group of thymine. We show here that TET1, a fusion partner of the MLL gene in acute myeloid leukemia, is a 2-oxoglutarate (2OG)- and Fe(II)-dependent enzyme that catalyzes conversion of 5mC to 5-hydroxymethylcytosine (hmC) in cultured cells and in vitro. hmC is present in the genome of mouse embryonic stem cells, and hmC levels decrease upon RNA interference-mediated depletion of TET1. Thus, TET proteins have potential roles in epigenetic regulation through modification of 5mC to hmC.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2715015/" 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/PMC2715015/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tahiliani, Mamta -- Koh, Kian Peng -- Shen, Yinghua -- Pastor, William A -- Bandukwala, Hozefa -- Brudno, Yevgeny -- Agarwal, Suneet -- Iyer, Lakshminarayan M -- Liu, David R -- Aravind, L -- Rao, Anjana -- AI44432/AI/NIAID NIH HHS/ -- K08 HL089150/HL/NHLBI NIH HHS/ -- R01 GM065865/GM/NIGMS NIH HHS/ -- R01 GM065865-05A1/GM/NIGMS NIH HHS/ -- R01GM065865/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2009 May 15;324(5929):930-5. doi: 10.1126/science.1170116. Epub 2009 Apr 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School and Immune Disease Institute, 200 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19372391" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 5-Methylcytosine/*metabolism ; Amino Acid Sequence ; Animals ; Cell Line ; Cytosine/*analogs & derivatives/analysis/metabolism ; DNA/chemistry/*metabolism ; DNA Methylation ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Dinucleoside Phosphates/metabolism ; Embryonic Stem Cells/chemistry/metabolism ; Humans ; Hydroxylation ; Mass Spectrometry ; Mice ; Molecular Sequence Data ; Proto-Oncogene Proteins/chemistry/genetics/*metabolism ; RNA Interference ; Sequence Alignment ; Transfection
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Proteoglycan-specific molecular switch for RPTPsigma clustering and neuronal extension (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2011-04-02
    Beschreibung: Heparan and chondroitin sulfate proteoglycans (HSPGs and CSPGs, respectively) regulate numerous cell surface signaling events, with typically opposite effects on cell function. CSPGs inhibit nerve regeneration through receptor protein tyrosine phosphatase sigma (RPTPsigma). Here we report that RPTPsigma acts bimodally in sensory neuron extension, mediating CSPG inhibition and HSPG growth promotion. Crystallographic analyses of a shared HSPG-CSPG binding site reveal a conformational plasticity that can accommodate diverse glycosaminoglycans with comparable affinities. Heparan sulfate and analogs induced RPTPsigma ectodomain oligomerization in solution, which was inhibited by chondroitin sulfate. RPTPsigma and HSPGs colocalize in puncta on sensory neurons in culture, whereas CSPGs occupy the extracellular matrix. These results lead to a model where proteoglycans can exert opposing effects on neuronal extension by competing to control the oligomerization of a common receptor.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3154093/" 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/PMC3154093/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coles, Charlotte H -- Shen, Yingjie -- Tenney, Alan P -- Siebold, Christian -- Sutton, Geoffrey C -- Lu, Weixian -- Gallagher, John T -- Jones, E Yvonne -- Flanagan, John G -- Aricescu, A Radu -- 090532/Wellcome Trust/United Kingdom -- 10976/Cancer Research UK/United Kingdom -- EY11559/EY/NEI NIH HHS/ -- G0700232/Medical Research Council/United Kingdom -- G0900084/Medical Research Council/United Kingdom -- HD29417/HD/NICHD NIH HHS/ -- R01 EY011559/EY/NEI NIH HHS/ -- R01 EY011559-19/EY/NEI NIH HHS/ -- R37 HD029417/HD/NICHD NIH HHS/ -- R37 HD029417-20/HD/NICHD NIH HHS/ -- Cancer Research UK/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2011 Apr 22;332(6028):484-8. doi: 10.1126/science.1200840. Epub 2011 Mar 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21454754" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Axons/*physiology ; Binding Sites ; Cell Membrane/metabolism ; Cells, Cultured ; Chondroitin Sulfate Proteoglycans/chemistry/*metabolism ; Chondroitin Sulfates/chemistry/metabolism ; Crystallography, X-Ray ; Extracellular Matrix ; Ganglia, Spinal ; Glypicans/metabolism ; Growth Cones/metabolism ; Heparan Sulfate Proteoglycans/chemistry/*metabolism ; Heparitin Sulfate/analogs & derivatives/chemistry/metabolism ; Humans ; Mice ; Models, Biological ; Models, Molecular ; Molecular Sequence Data ; Neurites/physiology ; Neurocan/metabolism ; Protein Conformation ; Protein Multimerization ; Protein Structure, Tertiary ; Receptor-Like Protein Tyrosine Phosphatases, Class 2/*chemistry/*metabolism ; Sensory Receptor Cells/*physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Crystal structure of the carboxyltransferase domain of acetyl-coenzyme A carboxylase (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-29
    Beschreibung: Acetyl-coenzyme A carboxylases (ACCs) are required for the biosynthesis and oxidation of long-chain fatty acids. They are targets for therapeutics against obesity and diabetes, and several herbicides function by inhibiting their carboxyltransferase (CT) domain. We determined the crystal structure of the free enzyme and the coenzyme A complex of yeast CT at 2.7 angstrom resolution and found that it comprises two domains, both belonging to the crotonase/ClpP superfamily. The active site is at the interface of a dimer. Mutagenesis and kinetic studies reveal the functional roles of conserved residues here. The herbicides target the active site of CT, providing a lead for inhibitor development against human ACCs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Hailong -- Yang, Zhiru -- Shen, Yang -- Tong, Liang -- New York, N.Y. -- Science. 2003 Mar 28;299(5615):2064-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Columbia University, New York, NY 10027, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12663926" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetyl-CoA Carboxylase/antagonists & inhibitors/*chemistry/genetics/metabolism ; Amino Acid Sequence ; Binding Sites ; Biotin/chemistry/metabolism ; Catalysis ; Coenzyme A/chemistry/metabolism ; Crystallography, X-Ray ; Dimerization ; Enzyme Inhibitors/metabolism/pharmacology ; Hydrogen Bonding ; Kinetics ; Molecular Sequence Data ; Mutagenesis ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Pyridines/metabolism/pharmacology ; Saccharomyces cerevisiae/*enzymology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Tunable photon blockade in coupled semiconductor cavities (2015)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2015-06-09
    Beschreibung: Author(s): H. Z. Shen, Y. H. Zhou, and X. X. Yi In this paper, we show that photon blockade can be observed in a system with weak Kerr nonlinearities. The system consists of two spatially overlapping single-mode semiconductor cavities with tunable one- and two-photon tunneling. We find that both conventional and unconventional single-photon block... [Phys. Rev. A 91, 063808] Published Fri Jun 05, 2015
    Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
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  • 9
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    Quantum optical diode with semiconductor microcavities (2014)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2014-08-27
    Beschreibung: Author(s): H. Z. Shen, Y. H. Zhou, and X. X. Yi The semiconductor diode, which acts as an electrical rectifier and allows unidirectional electronic transports, is the key to information processing in integrated circuits. Analogously, an optical rectifier (or diode) working at specific target wavelengths has recently become a highly sought-after d... [Phys. Rev. A 90, 023849] Published Tue Aug 26, 2014
    Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
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