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  • 1
    Publication Date: 2009-03-17
    Description: Once all chromosomes are connected to the mitotic spindle (bioriented), anaphase is initiated by the protein ubiquitylation activity of the anaphase-promoting complex/cyclosome (APC/C) and its coactivator Cdc20 (APC/C(Cdc20)). Before chromosome biorientation, anaphase is delayed by a mitotic checkpoint complex (MCC) that inhibits APC/C(Cdc20). We used single-particle electron microscopy to obtain three-dimensional models of human APC/C in various functional states: bound to MCC, to Cdc20, or to neither (apo-APC/C). These experiments revealed that MCC associates with the Cdc20 binding site on APC/C, locks the otherwise flexible APC/C in a "closed" state, and prevents binding and ubiquitylation of a wide range of different APC/C substrates. These observations clarify the structural basis for the inhibition of APC/C by spindle checkpoint proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2989460/" 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/PMC2989460/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Herzog, Franz -- Primorac, Ivana -- Dube, Prakash -- Lenart, Peter -- Sander, Bjorn -- Mechtler, Karl -- Stark, Holger -- Peters, Jan-Michael -- F 3407/Austrian Science Fund FWF/Austria -- New York, N.Y. -- Science. 2009 Mar 13;323(5920):1477-81. doi: 10.1126/science.1163300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Institute of Molecular Pathology, Dr. Bohr-Gasse 7, 1030 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19286556" target="_blank"〉PubMed〈/a〉
    Keywords: Anaphase ; Anaphase-Promoting Complex-Cyclosome ; Cdc20 Proteins ; Cell Cycle Proteins/chemistry/metabolism ; HeLa Cells ; Humans ; Image Processing, Computer-Assisted ; Imaging, Three-Dimensional ; Microscopy, Electron ; *Mitosis ; Models, Molecular ; Protein Binding ; Protein Conformation ; Protein Structure, Tertiary ; Spindle Apparatus/*metabolism ; Ubiquitin-Conjugating Enzymes/chemistry/metabolism ; Ubiquitin-Protein Ligase Complexes/*chemistry/*metabolism ; Ubiquitination
    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
    Publication Date: 2009-07-04
    Description: The accretion of matter onto a massive black hole is believed to feed the relativistic plasma jets found in many active galactic nuclei (AGN). Although some AGN accelerate particles to energies exceeding 10(12) electron volts and are bright sources of very-high-energy (VHE) gamma-ray emission, it is not yet known where the VHE emission originates. Here we report on radio and VHE observations of the radio galaxy Messier 87, revealing a period of extremely strong VHE gamma-ray flares accompanied by a strong increase of the radio flux from its nucleus. These results imply that charged particles are accelerated to very high energies in the immediate vicinity of the black hole.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉VERITAS Collaboration -- VLBA 43 GHz M87 Monitoring Team -- H.E.S.S. Collaboration -- MAGIC Collaboration -- Acciari, V A -- Aliu, E -- Arlen, T -- Bautista, M -- Beilicke, M -- Benbow, W -- Bradbury, S M -- Buckley, J H -- Bugaev, V -- Butt, Y -- Byrum, K -- Cannon, A -- Celik, O -- Cesarini, A -- Chow, Y C -- Ciupik, L -- Cogan, P -- Cui, W -- Dickherber, R -- Fegan, S J -- Finley, J P -- Fortin, P -- Fortson, L -- Furniss, A -- Gall, D -- Gillanders, G H -- Grube, J -- Guenette, R -- Gyuk, G -- Hanna, D -- Holder, J -- Horan, D -- Hui, C M -- Humensky, T B -- Imran, A -- Kaaret, P -- Karlsson, N -- Kieda, D -- Kildea, J -- Konopelko, A -- Krawczynski, H -- Krennrich, F -- Lang, M J -- LeBohec, S -- Maier, G -- McCann, A -- McCutcheon, M -- Millis, J -- Moriarty, P -- Ong, R A -- Otte, A N -- Pandel, D -- Perkins, J S -- Petry, D -- Pohl, M -- Quinn, J -- Ragan, K -- Reyes, L C -- Reynolds, P T -- Roache, E -- Rose, H J -- Schroedter, M -- Sembroski, G H -- Smith, A W -- Swordy, S P -- Theiling, M -- Toner, J A -- Varlotta, A -- Vincent, S -- Wakely, S P -- Ward, J E -- Weekes, T C -- Weinstein, A -- Williams, D A -- Wissel, S -- Wood, M -- Walker, R C -- Davies, F -- Hardee, P E -- Junor, W -- Ly, C -- Aharonian, F -- Akhperjanian, A G -- Anton, G -- Barres de Almeida, U -- Bazer-Bachi, A R -- Becherini, Y -- Behera, B -- Bernlohr, K -- Bochow, A -- Boisson, C -- Bolmont, J -- Borrel, V -- Brucker, J -- Brun, F -- Brun, P -- Buhler, R -- Bulik, T -- Busching, I -- Boutelier, T -- Chadwick, P M -- Charbonnier, A -- Chaves, R C G -- Cheesebrough, A -- Chounet, L-M -- Clapson, A C -- Coignet, G -- Dalton, M -- Daniel, M K -- Davids, I D -- Degrange, B -- Deil, C -- Dickinson, H J -- Djannati-Atai, A -- Domainko, W -- Drury, L O'C -- Dubois, F -- Dubus, G -- Dyks, J -- Dyrda, M -- Egberts, K -- Emmanoulopoulos, D -- Espigat, P -- Farnier, C -- Feinstein, F -- Fiasson, A -- Forster, A -- Fontaine, G -- Fussling, M -- Gabici, S -- Gallant, Y A -- Gerard, L -- Gerbig, D -- Giebels, B -- Glicenstein, J F -- Gluck, B -- Goret, P -- Gohring, D -- Hauser, D -- Hauser, M -- Heinz, S -- Heinzelmann, G -- Henri, G -- Hermann, G -- Hinton, J A -- Hoffmann, A -- Hofmann, W -- Holleran, M -- Hoppe, S -- Horns, D -- Jacholkowska, A -- de Jager, O C -- Jahn, C -- Jung, I -- Katarzynski, K -- Katz, U -- Kaufmann, S -- Kendziorra, E -- Kerschhaggl, M -- Khangulyan, D -- Khelifi, B -- Keogh, D -- Kluzniak, W -- Kneiske, T -- Komin, Nu -- Kosack, K -- Lamanna, G -- Lenain, J-P -- Lohse, T -- Marandon, V -- Martin, J M -- Martineau-Huynh, O -- Marcowith, A -- Maurin, D -- McComb, T J L -- Medina, M C -- Moderski, R -- Moulin, E -- Naumann-Godo, M -- de Naurois, M -- Nedbal, D -- Nekrassov, D -- Nicholas, B -- Niemiec, J -- Nolan, S J -- Ohm, S -- Olive, J-F -- de Ona Wilhelmi, E -- Orford, K J -- Ostrowski, M -- Panter, M -- Paz Arribas, M -- Pedaletti, G -- Pelletier, G -- Petrucci, P-O -- Pita, S -- Puhlhofer, G -- Punch, M -- Quirrenbach, A -- Raubenheimer, B C -- Raue, M -- Rayner, S M -- Renaud, M -- Rieger, F -- Ripken, J -- Rob, L -- Rosier-Lees, S -- Rowell, G -- Rudak, B -- Rulten, C B -- Ruppel, J -- Sahakian, V -- Santangelo, A -- Schlickeiser, R -- Schock, F M -- Schroder, R -- Schwanke, U -- Schwarzburg, S -- Schwemmer, S -- Shalchi, A -- Sikora, M -- Skilton, J L -- Sol, H -- Spangler, D -- Stawarz, L -- Steenkamp, R -- Stegmann, C -- Stinzing, F -- Superina, G -- Szostek, A -- Tam, P H -- Tavernet, J-P -- Terrier, R -- Tibolla, O -- Tluczykont, M -- van Eldik, C -- Vasileiadis, G -- Venter, C -- Venter, L -- Vialle, J P -- Vincent, P -- Vivier, M -- Volk, H J -- Volpe, F -- Wagner, S J -- Ward, M -- Zdziarski, A A -- Zech, A -- Anderhub, H -- Antonelli, L A -- Antoranz, P -- Backes, M -- Baixeras, C -- Balestra, S -- Barrio, J A -- Bastieri, D -- Becerra Gonzalez, J -- Becker, J K -- Bednarek, W -- Berger, K -- Bernardini, E -- Biland, A -- Bock, R K -- Bonnoli, G -- Bordas, P -- Borla Tridon, D -- Bosch-Ramon, V -- Bose, D -- Braun, I -- Bretz, T -- Britvitch, I -- Camara, M -- Carmona, E -- Commichau, S -- Contreras, J L -- Cortina, J -- Costado, M T -- Covino, S -- Curtef, V -- Dazzi, F -- De Angelis, A -- De Cea del Pozo, E -- Delgado Mendez, C -- De los Reyes, R -- De Lotto, B -- De Maria, M -- De Sabata, F -- Dominguez, A -- Dorner, D -- Doro, M -- Elsaesser, D -- Errando, M -- Ferenc, D -- Fernandez, E -- Firpo, R -- Fonseca, M V -- Font, L -- Galante, N -- Garcia Lopez, R J -- Garczarczyk, M -- Gaug, M -- Goebel, F -- Hadasch, D -- Hayashida, M -- Herrero, A -- Hildebrand, D -- Hohne-Monch, D -- Hose, J -- Hsu, C C -- Jogler, T -- Kranich, D -- La Barbera, A -- Laille, A -- Leonardo, E -- Lindfors, E -- Lombardi, S -- Longo, F -- Lopez, M -- Lorenz, E -- Majumdar, P -- Maneva, G -- Mankuzhiyil, N -- Mannheim, K -- Maraschi, L -- Mariotti, M -- Martinez, M -- Mazin, D -- Meucci, M -- Miranda, J M -- Mirzoyan, R -- Miyamoto, H -- Moldon, J -- Moles, M -- Moralejo, A -- Nieto, D -- Nilsson, K -- Ninkovic, J -- Oya, I -- Paoletti, R -- Paredes, J M -- Pasanen, M -- Pascoli, D -- Pauss, F -- Pegna, R G -- Perez-Torres, M A -- Persic, M -- Peruzzo, L -- Prada, F -- Prandini, E -- Puchades, N -- Reichardt, I -- Rhode, W -- Ribo, M -- Rico, J -- Rissi, M -- Robert, A -- Rugamer, S -- Saggion, A -- Saito, T Y -- Salvati, M -- Sanchez-Conde, M -- Satalecka, K -- Scalzotto, V -- Scapin, V -- Schweizer, T -- Shayduk, M -- Shore, S N -- Sidro, N -- Sierpowska-Bartosik, A -- Sillanpaa, A -- Sitarek, J -- Sobczynska, D -- Spanier, F -- Stamerra, A -- Stark, L S -- Takalo, L -- Tavecchio, F -- Temnikov, P -- Tescaro, D -- Teshima, M -- Torres, D F -- Turini, N -- Vankov, H -- Wagner, R M -- Zabalza, V -- Zandanel, F -- Zanin, R -- Zapatero, J -- New York, N.Y. -- Science. 2009 Jul 24;325(5939):444-8. doi: 10.1126/science.1175406. Epub 2009 Jul 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19574351" target="_blank"〉PubMed〈/a〉
    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
    Publication Date: 2006-06-17
    Description: Inflammation and trauma lead to enhanced pain sensitivity (hyperalgesia), which is in part due to altered sensory processing in the spinal cord. The synaptic hypothesis of hyperalgesia, which postulates that hyperalgesia is induced by the activity-dependent long-term potentiation (LTP) in the spinal cord, has been challenged, because in previous studies of pain pathways, LTP was experimentally induced by nerve stimulation at high frequencies ( approximately 100 hertz). This does not, however, resemble the real low-frequency afferent barrage that occurs during inflammation. We identified a synaptic amplifier at the origin of an ascending pain pathway that is switched-on by low-level activity in nociceptive nerve fibers. This model integrates known signal transduction pathways of hyperalgesia without contradiction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ikeda, Hiroshi -- Stark, Johanna -- Fischer, Harald -- Wagner, Matthias -- Drdla, Ruth -- Jager, Tino -- Sandkuhler, Jurgen -- P 18129/Austrian Science Fund FWF/Austria -- New York, N.Y. -- Science. 2006 Jun 16;312(5780):1659-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurophysiology, Center for Brain Research, Medical University of Vienna, Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16778058" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Electric Stimulation ; Excitatory Postsynaptic Potentials ; Hyperalgesia/*physiopathology ; Inflammation/*physiopathology ; Long-Term Potentiation ; Nerve Fibers, Unmyelinated/*physiology ; Neuronal Plasticity ; Nitric Oxide/physiology ; Pain/*physiopathology ; Patch-Clamp Techniques ; Periaqueductal Gray/physiology ; Posterior Horn Cells/*physiopathology ; Rats ; Rats, Sprague-Dawley ; Signal Transduction ; Spinal Cord/physiopathology ; Synapses/physiology ; *Synaptic Transmission
    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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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2006-11-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stark, Dennis M -- New York, N.Y. -- Science. 2006 Nov 10;314(5801):923-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17106948" target="_blank"〉PubMed〈/a〉
    Keywords: *Academies and Institutes ; *Animal Experimentation ; *Animal Rights ; Animal Welfare ; Animals ; *Research Personnel ; *Social Behavior ; Terrorism/legislation & jurisprudence ; United States
    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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  • 5
    Publication Date: 2006-05-20
    Description: Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and can be used to elucidate the physics of relativistic jets. We report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LS I 61 + 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, which suggests that the emission is periodic. The strongest gamma-ray emission is not observed when the two stars are closest to one another, implying a strong orbital modulation of the emission or absorption processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Albert, J -- Aliu, E -- Anderhub, H -- Antoranz, P -- Armada, A -- Asensio, M -- Baixeras, C -- Barrio, J A -- Bartelt, M -- Bartko, H -- Bastieri, D -- Bavikadi, S R -- Bednarek, W -- Berger, K -- Bigongiari, C -- Biland, A -- Bisesi, E -- Bock, R K -- Bordas, P -- Bosch-Ramon, V -- Bretz, T -- Britvitch, I -- Camara, M -- Carmona, E -- Chilingarian, A -- Ciprini, S -- Coarasa, J A -- Commichau, S -- Contreras, J L -- Cortina, J -- Curtef, V -- Danielyan, V -- Dazzi, F -- De Angelis, A -- de Los Reyes, R -- De Lotto, B -- Domingo-Santamaria, E -- Dorner, D -- Doro, M -- Errando, M -- Fagiolini, M -- Ferenc, D -- Fernandez, E -- Firpo, R -- Flix, J -- Fonseca, M V -- Font, L -- Fuchs, M -- Galante, N -- Garczarczyk, M -- Gaug, M -- Giller, M -- Goebel, F -- Hakobyan, D -- Hayashida, M -- Hengstebeck, T -- Hohne, D -- Hose, J -- Hsu, C C -- Isar, P G -- Jacon, P -- Kalekin, O -- Kosyra, R -- Kranich, D -- Laatiaoui, M -- Laille, A -- Lenisa, T -- Liebing, P -- Lindfors, E -- Lombardi, S -- Longo, F -- Lopez, J -- Lopez, M -- Lorenz, E -- Lucarelli, F -- Majumdar, P -- Maneva, G -- Mannheim, K -- Mansutti, O -- Mariotti, M -- Martinez, M -- Mase, K -- Mazin, D -- Merck, C -- Meucci, M -- Meyer, M -- Miranda, J M -- Mirzoyan, R -- Mizobuchi, S -- Moralejo, A -- Nilsson, K -- Ona-Wilhelmi, E -- Orduna, R -- Otte, N -- Oya, I -- Paneque, D -- Paoletti, R -- Paredes, J M -- Pasanen, M -- Pascoli, D -- Pauss, F -- Pavel, N -- Pegna, R -- Persic, M -- Peruzzo, L -- Piccioli, A -- Poller, M -- Pooley, G -- Prandini, E -- Raymers, A -- Rhode, W -- Ribo, M -- Rico, J -- Riegel, B -- Rissi, M -- Robert, A -- Romero, G E -- Rugamer, S -- Saggion, A -- Sanchez, A -- Sartori, P -- Scalzotto, V -- Scapin, V -- Schmitt, R -- Schweizer, T -- Shayduk, M -- Shinozaki, K -- Shore, S N -- Sidro, N -- Sillanpaa, A -- Sobczynska, D -- Stamerra, A -- Stark, L S -- Takalo, L -- Temnikov, P -- Tescaro, D -- Teshima, M -- Tonello, N -- Torres, A -- Torres, D F -- Turini, N -- Vankov, H -- Vitale, V -- Wagner, R M -- Wibig, T -- Wittek, W -- Zanin, R -- Zapatero, J -- New York, N.Y. -- Science. 2006 Jun 23;312(5781):1771-3. Epub 2006 May 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universitat Wurzburg, D-97074 Wurzburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16709745" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 6
    Publication Date: 2008-11-29
    Description: In plants and mammals, small RNAs indirectly mediate epigenetic inheritance by specifying cytosine methylation. We found that small RNAs themselves serve as vectors for epigenetic information. Crosses between Drosophila strains that differ in the presence of a particular transposon can produce sterile progeny, a phenomenon called hybrid dysgenesis. This phenotype manifests itself only if the transposon is paternally inherited, suggesting maternal transmission of a factor that maintains fertility. In both P- and I-element-mediated hybrid dysgenesis models, daughters show a markedly different content of Piwi-interacting RNAs (piRNAs) targeting each element, depending on their parents of origin. Such differences persist from fertilization through adulthood. This indicates that maternally deposited piRNAs are important for mounting an effective silencing response and that a lack of maternal piRNA inheritance underlies hybrid dysgenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2805124/" 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/PMC2805124/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brennecke, Julius -- Malone, Colin D -- Aravin, Alexei A -- Sachidanandam, Ravi -- Stark, Alexander -- Hannon, Gregory J -- P01 CA013106/CA/NCI NIH HHS/ -- P01 CA013106-37/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2008 Nov 28;322(5906):1387-92. doi: 10.1126/science.1165171.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Watson School of Biological Sciences, Howard Hughes Medical Institute, Cold Spring Harbor Laboratory (CSHL), 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19039138" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Argonaute Proteins ; Crosses, Genetic ; *DNA Transposable Elements ; Drosophila Proteins/genetics/metabolism ; Drosophila melanogaster/embryology/*genetics/physiology ; *Epigenesis, Genetic ; Female ; Fertility ; Hybridization, Genetic ; Male ; Ovary/metabolism ; Peptide Initiation Factors/genetics/metabolism ; *RNA Interference ; RNA, Small Interfering/*genetics/metabolism
    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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  • 7
    Publication Date: 2008-06-28
    Description: The atmospheric Cherenkov gamma-ray telescope MAGIC, designed for a low-energy threshold, has detected very-high-energy gamma rays from a giant flare of the distant Quasi-Stellar Radio Source (in short: radio quasar) 3C 279, at a distance of more than 5 billion light-years (a redshift of 0.536). No quasar has been observed previously in very-high-energy gamma radiation, and this is also the most distant object detected emitting gamma rays above 50 gigaelectron volts. Because high-energy gamma rays may be stopped by interacting with the diffuse background light in the universe, the observations by MAGIC imply a low amount for such light, consistent with that known from galaxy counts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉MAGIC Collaboration -- Albert, J -- Aliu, E -- Anderhub, H -- Antonelli, L A -- Antoranz, P -- Backes, M -- Baixeras, C -- Barrio, J A -- Bartko, H -- Bastieri, D -- Becker, J K -- Bednarek, W -- Berger, K -- Bernardini, E -- Bigongiari, C -- Biland, A -- Bock, R K -- Bonnoli, G -- Bordas, P -- Bosch-Ramon, V -- Bretz, T -- Britvitch, I -- Camara, M -- Carmona, E -- Chilingarian, A -- Commichau, S -- Contreras, J L -- Cortina, J -- Costado, M T -- Covino, S -- Curtef, V -- Dazzi, F -- De Angelis, A -- De Cea Del Pozo, E -- de Los Reyes, R -- De Lotto, B -- De Maria, M -- De Sabata, F -- Mendez, C Delgado -- Dominguez, A -- Dorner, D -- Doro, M -- Errando, M -- Fagiolini, M -- Ferenc, D -- Fernandez, E -- Firpo, R -- Fonseca, M V -- Font, L -- Galante, N -- Lopez, R J Garcia -- Garczarczyk, M -- Gaug, M -- Goebel, F -- Hayashida, M -- Herrero, A -- Hohne, D -- Hose, J -- Hsu, C C -- Huber, S -- Jogler, T -- Kneiske, T M -- Kranich, D -- La Barbera, A -- Laille, A -- Leonardo, E -- Lindfors, E -- Lombardi, S -- Longo, F -- Lopez, M -- Lorenz, E -- Majumdar, P -- Maneva, G -- Mankuzhiyil, N -- Mannheim, K -- Maraschi, L -- Mariotti, M -- Martinez, M -- Mazin, D -- Meucci, M -- Meyer, M -- Miranda, J M -- Mirzoyan, R -- Mizobuchi, S -- Moles, M -- Moralejo, A -- Nieto, D -- Nilsson, K -- Ninkovic, J -- Otte, N -- Oya, I -- Panniello, M -- Paoletti, R -- Paredes, J M -- Pasanen, M -- Pascoli, D -- Pauss, F -- Pegna, R G -- Perez-Torres, M A -- Persic, M -- Peruzzo, L -- Piccioli, A -- Prada, F -- Prandini, E -- Puchades, N -- Raymers, A -- Rhode, W -- Ribo, M -- Rico, J -- Rissi, M -- Robert, A -- Rugamer, S -- Saggion, A -- Saito, T Y -- Salvati, M -- Sanchez-Conde, M -- Sartori, P -- Satalecka, K -- Scalzotto, V -- Scapin, V -- Schmitt, R -- Schweizer, T -- Shayduk, M -- Shinozaki, K -- Shore, S N -- Sidro, N -- Sierpowska-Bartosik, A -- Sillanpaa, A -- Sobczynska, D -- Spanier, F -- Stamerra, A -- Stark, L S -- Takalo, L -- Tavecchio, F -- Temnikov, P -- Tescaro, D -- Teshima, M -- Tluczykont, M -- Torres, D F -- Turini, N -- Vankov, H -- Venturini, A -- Vitale, V -- Wagner, R M -- Wittek, W -- Zabalza, V -- Zandanel, F -- Zanin, R -- Zapatero, J -- New York, N.Y. -- Science. 2008 Jun 27;320(5884):1752-4. doi: 10.1126/science.1157087.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universitat Wurzburg, D-97074 Wurzburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18583607" target="_blank"〉PubMed〈/a〉
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2008-10-18
    Description: One fundamental question about pulsars concerns the mechanism of their pulsed electromagnetic emission. Measuring the high-end region of a pulsar's spectrum would shed light on this question. By developing a new electronic trigger, we lowered the threshold of the Major Atmospheric gamma-ray Imaging Cherenkov (MAGIC) telescope to 25 giga-electron volts. In this configuration, we detected pulsed gamma-rays from the Crab pulsar that were greater than 25 giga-electron volts, revealing a relatively high cutoff energy in the phase-averaged spectrum. This indicates that the emission occurs far out in the magnetosphere, hence excluding the polar-cap scenario as a possible explanation of our measurement. The high cutoff energy also challenges the slot-gap scenario.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉MAGIC Collaboration -- Aliu, E -- Anderhub, H -- Antonelli, L A -- Antoranz, P -- Backes, M -- Baixeras, C -- Barrio, J A -- Bartko, H -- Bastieri, D -- Becker, J K -- Bednarek, W -- Berger, K -- Bernardini, E -- Bigongiari, C -- Biland, A -- Bock, R K -- Bonnoli, G -- Bordas, P -- Bosch-Ramon, V -- Bretz, T -- Britvitch, I -- Camara, M -- Carmona, E -- Chilingarian, A -- Commichau, S -- Contreras, J L -- Cortina, J -- Costado, M T -- Covino, S -- Curtef, V -- Dazzi, F -- De Angelis, A -- De Cea Del Pozo, E -- de Los Reyes, R -- De Lotto, B -- De Maria, M -- De Sabata, F -- Delgado Mendez, C -- Dominguez, A -- Dorner, D -- Doro, M -- Elsasser, D -- Errando, M -- Fagiolini, M -- Ferenc, D -- Fernandez, E -- Firpo, R -- Fonseca, M V -- Font, L -- Galante, N -- Garcia Lopez, R J -- Garczarczyk, M -- Gaug, M -- Goebel, F -- Hadasch, D -- Hayashida, M -- Herrero, A -- Hohne, D -- Hose, J -- Hsu, C C -- Huber, S -- Jogler, T -- Kranich, D -- La Barbera, A -- Laille, A -- Leonardo, E -- Lindfors, E -- Lombardi, S -- Longo, F -- Lopez, M -- Lorenz, E -- Majumdar, P -- Maneva, G -- Mankuzhiyil, N -- Mannheim, K -- Maraschi, L -- Mariotti, M -- Martinez, M -- Mazin, D -- Meucci, M -- Meyer, M -- Miranda, J M -- Mirzoyan, R -- Moles, M -- Moralejo, A -- Nieto, D -- Nilsson, K -- Ninkovic, J -- Otte, N -- Oya, I -- Paoletti, R -- Paredes, J M -- Pasanen, M -- Pascoli, D -- Pauss, F -- Pegna, R G -- Perez-Torres, M A -- Persic, M -- Peruzzo, L -- Piccioli, A -- Prada, F -- Prandini, E -- Puchades, N -- Raymers, A -- Rhode, W -- Ribo, M -- Rico, J -- Rissi, M -- Robert, A -- Rugamer, S -- Saggion, A -- Saito, T Y -- Salvati, M -- Sanchez-Conde, M -- Sartori, P -- Satalecka, K -- Scalzotto, V -- Scapin, V -- Schweizer, T -- Shayduk, M -- Shinozaki, K -- Shore, S N -- Sidro, N -- Sierpowska-Bartosik, A -- Sillanpaa, A -- Sobczynska, D -- Spanier, F -- Stamerra, A -- Stark, L S -- Takalo, L -- Tavecchio, F -- Temnikov, P -- Tescaro, D -- Teshima, M -- Tluczykont, M -- Torres, D F -- Turini, N -- Vankov, H -- Venturini, A -- Vitale, V -- Wagner, R M -- Wittek, W -- Zabalza, V -- Zandanel, F -- Zanin, R -- Zapatero, J -- de Jager, O C -- de Ona Wilhelmi, E -- New York, N.Y. -- Science. 2008 Nov 21;322(5905):1221-4. doi: 10.1126/science.1164718. Epub 2008 Oct 16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18927358" target="_blank"〉PubMed〈/a〉
    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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  • 9
    Publication Date: 2008-03-22
    Description: Pattern separation, the process of transforming similar representations or memories into highly dissimilar, nonoverlapping representations, is a key component of many functions ascribed to the hippocampus. Computational models have stressed the role of the hippocampus and, in particular, the dentate gyrus and its projections into the CA3 subregion in pattern separation. We used high-resolution (1.5-millimeter isotropic voxels) functional magnetic resonance imaging to measure brain activity during incidental memory encoding. Although activity consistent with a bias toward pattern completion was observed in CA1, the subiculum, and the entorhinal and parahippocampal cortices, activity consistent with a strong bias toward pattern separation was observed in, and limited to, the CA3/dentate gyrus. These results provide compelling evidence of a key role of the human CA3/dentate gyrus in pattern separation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829853/" 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/PMC2829853/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bakker, Arnold -- Kirwan, C Brock -- Miller, Michael -- Stark, Craig E L -- P41 RR15241-01A1/RR/NCRR NIH HHS/ -- R01 EB000975/EB/NIBIB NIH HHS/ -- R01 EB000975-04/EB/NIBIB NIH HHS/ -- R01 EB008171/EB/NIBIB NIH HHS/ -- R01 EB008171-01A1/EB/NIBIB NIH HHS/ -- R01 EB00975-01/EB/NIBIB NIH HHS/ -- New York, N.Y. -- Science. 2008 Mar 21;319(5870):1640-2. doi: 10.1126/science.1152882.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18356518" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Analysis of Variance ; Brain Mapping ; Dentate Gyrus/*physiology ; Entorhinal Cortex/physiology ; Female ; Hippocampus/*physiology ; Humans ; Magnetic Resonance Imaging ; Male ; Memory/*physiology ; Parahippocampal Gyrus/physiology ; *Pattern Recognition, Physiological
    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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