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  • 1
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    Magnetic coupling of Fe-porphyrin molecules adsorbed on clean and c(2×2) oxygen-reconstructed Co(100) investigated by spin-polarized photoemission spectroscopy (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-05-11
    Description: Author(s): A. P. Weber, A. N. Caruso, E. Vescovo, Md. E. Ali, K. Tarafder, S. Z. Janjua, J. T. Sadowski, and P. M. Oppeneer The spin-polarized electronic structure of iron octaethylporphyrin (FeOEP) molecules adsorbed on a pristine and on a c (2×2) oxygen-reconstructed Co(100) surface has been analyzed by means of spin-polarized photoemission spectroscopy (SPPES) and first-principles density functional theory with the on-... [Phys. Rev. B 87, 184411] Published Fri May 10, 2013
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Gapped Surface States in a Strong-Topological-Insulator Material (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-06-25
    Description: Author(s): A. P. Weber, Q. D. Gibson, Huiwen Ji, A. N. Caruso, A. V. Fedorov, R. J. Cava, and T. Valla Topological-crystalline-insulators and strong-topological-insulator phases of matter can be present in a single system. This is demonstrated using photoelectron spectroscopy measurements and band structure calculations. [Phys. Rev. Lett. 114, 256401] Published Tue Jun 23, 2015
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Absence of a Proximity Effect for a Thin-Films of a Bi2Se3 Topological Insulator Grown on Top of a Bi2Sr2CaCu2O8+δ Cuprate Superconductor (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-08-08
    Description: Author(s): T. Yilmaz, I. Pletikosić, A. P. Weber, J. T. Sadowski, G. D. Gu, A. N. Caruso, B. Sinkovic, and T. Valla Proximity-induced superconductivity in a 3D topological insulator represents a new avenue for observing zero-energy Majorana fermions inside vortex cores. Relatively small gaps and low transition temperatures of conventional s-wave superconductors put hard constraints on these experiments. Significa... [Phys. Rev. Lett. 113, 067003] Published Thu Aug 07, 2014
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    $α$-Sn phase on Si(111): Spin texture of a two-dimensional Mott state (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-10-16
    Description: Author(s): M. Jäger, C. Brand, A. P. Weber, M. Fanciulli, J. H. Dil, H. Pfnür, and C. Tegenkamp The α -Sn reconstruction on Si(111) is a prototype system for a two-dimensional Mott phase. In this study we performed spin-resolved photoemission experiments and analyzed in detail the spin structure of this electronically correlated surface state. The analysis of the spin-integrated bands as well a... [Phys. Rev. B 98, 165422] Published Mon Oct 15, 2018
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 5
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    Gene transfer from bacteria and archaea facilitated evolution of an extremophilic eukaryote (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-03-09
    Description: Some microbial eukaryotes, such as the extremophilic red alga Galdieria sulphuraria, live in hot, toxic metal-rich, acidic environments. To elucidate the underlying molecular mechanisms of adaptation, we sequenced the 13.7-megabase genome of G. sulphuraria. This alga shows an enormous metabolic flexibility, growing either photoautotrophically or heterotrophically on more than 50 carbon sources. Environmental adaptation seems to have been facilitated by horizontal gene transfer from various bacteria and archaea, often followed by gene family expansion. At least 5% of protein-coding genes of G. sulphuraria were probably acquired horizontally. These proteins are involved in ecologically important processes ranging from heavy-metal detoxification to glycerol uptake and metabolism. Thus, our findings show that a pan-domain gene pool has facilitated environmental adaptation in this unicellular eukaryote.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schonknecht, Gerald -- Chen, Wei-Hua -- Ternes, Chad M -- Barbier, Guillaume G -- Shrestha, Roshan P -- Stanke, Mario -- Brautigam, Andrea -- Baker, Brett J -- Banfield, Jillian F -- Garavito, R Michael -- Carr, Kevin -- Wilkerson, Curtis -- Rensing, Stefan A -- Gagneul, David -- Dickenson, Nicholas E -- Oesterhelt, Christine -- Lercher, Martin J -- Weber, Andreas P M -- New York, N.Y. -- Science. 2013 Mar 8;339(6124):1207-10. doi: 10.1126/science.1231707.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany, Oklahoma State University, Stillwater, OK 74078, USA. gerald.schoenknecht@okstate.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23471408" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/*genetics ; Adenosine Triphosphatases/genetics ; Archaea/classification/genetics ; Bacteria/classification/genetics ; DNA, Algal ; *Evolution, Molecular ; *Gene Transfer, Horizontal ; *Genes, Archaeal ; *Genes, Bacterial ; Genome, Plant/*genetics ; Phylogeny ; Rhodophyta/*genetics/*microbiology/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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  • 6
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    A plastidial sodium-dependent pyruvate transporter (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-08-26
    Description: Pyruvate serves as a metabolic precursor for many plastid-localized biosynthetic pathways, such as those for fatty acids, terpenoids and branched-chain amino acids. In spite of the importance of pyruvate uptake into plastids (organelles within cells of plants and algae), the molecular mechanisms of this uptake have not yet been explored. This is mainly because pyruvate is a relatively small compound that is able to passively permeate lipid bilayers, which precludes accurate measurement of pyruvate transport activity in reconstituted liposomes. Using differential transcriptome analyses of C(3) and C(4) plants of the genera Flaveria and Cleome, here we have identified a novel gene that is abundant in C(4) species, named BASS2 (BILE ACID:SODIUM SYMPORTER FAMILY PROTEIN 2). The BASS2 protein is localized at the chloroplast envelope membrane, and is highly abundant in C(4) plants that have the sodium-dependent pyruvate transporter. Recombinant BASS2 shows sodium-dependent pyruvate uptake activity. Sodium influx is balanced by a sodium:proton antiporter (NHD1), which was mimicked in recombinant Escherichia coli cells expressing both BASS2 and NHD1. Arabidopsis thaliana bass2 mutants lack pyruvate uptake into chloroplasts, which affects plastid-localized isopentenyl diphosphate synthesis, as evidenced by increased sensitivity of such mutants to mevastatin, an inhibitor of cytosolic isopentenyl diphosphate biosynthesis. We thus provide molecular evidence for a sodium-coupled metabolite transporter in plastid envelopes. Orthologues of BASS2 can be detected in all the genomes of land plants that have been characterized so far, thus indicating the widespread importance of sodium-coupled pyruvate import into plastids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Furumoto, Tsuyoshi -- Yamaguchi, Teppei -- Ohshima-Ichie, Yumiko -- Nakamura, Masayoshi -- Tsuchida-Iwata, Yoshiko -- Shimamura, Masaki -- Ohnishi, Junichi -- Hata, Shingo -- Gowik, Udo -- Westhoff, Peter -- Brautigam, Andrea -- Weber, Andreas P M -- Izui, Katsura -- England -- Nature. 2011 Aug 24;476(7361):472-5. doi: 10.1038/nature10250.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate School of Science, Hiroshima University, 1-3-1, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan. tfurumoto@hiroshima-u.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21866161" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/growth & development/metabolism ; Flaveria/genetics/growth & development/metabolism ; Membrane Transport Proteins/analysis/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Plant Proteins/analysis/chemistry/genetics/*metabolism ; Plastids/genetics/*metabolism ; Pyruvic Acid/metabolism ; RNA, Messenger/genetics/metabolism ; RNA, Plant/genetics/metabolism ; Sodium/*metabolism ; Transcription, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 7
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    Cyanophora paradoxa genome elucidates origin of photosynthesis in algae and plants (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-02-22
    Description: The primary endosymbiotic origin of the plastid in eukaryotes more than 1 billion years ago led to the evolution of algae and plants. We analyzed draft genome and transcriptome data from the basally diverging alga Cyanophora paradoxa and provide evidence for a single origin of the primary plastid in the eukaryote supergroup Plantae. C. paradoxa retains ancestral features of starch biosynthesis, fermentation, and plastid protein translocation common to plants and algae but lacks typical eukaryotic light-harvesting complex proteins. Traces of an ancient link to parasites such as Chlamydiae were found in the genomes of C. paradoxa and other Plantae. Apparently, Chlamydia-like bacteria donated genes that allow export of photosynthate from the plastid and its polymerization into storage polysaccharide in the cytosol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Price, Dana C -- Chan, Cheong Xin -- Yoon, Hwan Su -- Yang, Eun Chan -- Qiu, Huan -- Weber, Andreas P M -- Schwacke, Rainer -- Gross, Jeferson -- Blouin, Nicolas A -- Lane, Chris -- Reyes-Prieto, Adrian -- Durnford, Dion G -- Neilson, Jonathan A D -- Lang, B Franz -- Burger, Gertraud -- Steiner, Jurgen M -- Loffelhardt, Wolfgang -- Meuser, Jonathan E -- Posewitz, Matthew C -- Ball, Steven -- Arias, Maria Cecilia -- Henrissat, Bernard -- Coutinho, Pedro M -- Rensing, Stefan A -- Symeonidi, Aikaterini -- Doddapaneni, Harshavardhan -- Green, Beverley R -- Rajah, Veeran D -- Boore, Jeffrey -- Bhattacharya, Debashish -- MSP-14226/Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2012 Feb 17;335(6070):843-7. doi: 10.1126/science.1213561.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ 08901, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22344442" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Evolution ; Cyanobacteria/genetics ; Cyanophora/*genetics ; *Evolution, Molecular ; Gene Transfer, Horizontal ; Genes, Bacterial ; *Genome, Plant ; Molecular Sequence Data ; Photosynthesis/*genetics ; Phylogeny ; Symbiosis
    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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  • 8
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    EVOLUTION. Pathogen to powerhouse (2016)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2016-02-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ball, Steven G -- Bhattacharya, Debashish -- Weber, Andreas P M -- New York, N.Y. -- Science. 2016 Feb 12;351(6274):659-60. doi: 10.1126/science.aad8864.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universite de Lille CNRS, UMR 8576-UGSF-Unite de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France. ; Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ 08901, USA. debash.bhattacharya@gmail.com. ; Institute for Plant Biochemistry, Center of Excellence on Plant Sciences, Heinrich-Heine-University, Universitatsstrasse 1, D-40225 Dusseldorf, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912842" target="_blank"〉PubMed〈/a〉
    Keywords: Alphaproteobacteria/*genetics/pathogenicity ; Animals ; Archaea/metabolism ; *Biological Evolution ; Endocytosis ; Energy Metabolism/genetics ; Eukaryota/genetics ; *Host-Pathogen Interactions ; Humans ; Mitochondria/*genetics ; Plastids/*genetics ; Rickettsia/genetics/pathogenicity ; Symbiosis/*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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  • 9
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    Operando Imaging of All-Electric Spin Texture Manipulation in Ferroelectric and Multiferroic Rashba Semiconductors (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-06-19
    Description: Author(s): J. Krempaský, S. Muff, J. Minár, N. Pilet, M. Fanciulli, A. P. Weber, E. B. Guedes, M. Caputo, E. Müller, V. V. Volobuev, M. Gmitra, C. A. F. Vaz, V. Scagnoli, G. Springholz, and J. H. Dil New experiments demonstrate the ability to control electron spins via electric fields in a class of materials based on germanium telluride, paving the way for programmable spintronics applications. [Phys. Rev. X 8, 021067] Published Mon Jun 18, 2018
    Electronic ISSN: 2160-3308
    Topics: Physics
    Published by American Physical Society (APS)
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  • 10
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    Topological semimetal in a Bi-Bi_{2}Se_{3} infinitely adaptive superlattice phase (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-12-06
    Description: Author(s): T. Valla, Huiwen Ji, L. M. Schoop, A. P. Weber, Z.-H. Pan, J. T. Sadowski, E. Vescovo, A. V. Fedorov, A. N. Caruso, Q. D. Gibson, L. Müchler, C. Felser, and R. J. Cava We report spin- and angle-resolved photoemission studies of a topological semimetal from the infinitely adaptive series between elemental Bi and Bi 2 Se 3 . The compound, based on Bi 4 Se 3 , is a 1:1 natural superlattice of alternating Bi 2 layers and Bi 2 Se 3 layers; the inclusion of S allows the growth of l... [Phys. Rev. B 86, 241101] Published Wed Dec 05, 2012
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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