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  • Mutation  (11)
  • *Sex Characteristics
  • Biological Transport
  • American Association for the Advancement of Science (AAAS)  (14)
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  • 1
    Publication Date: 2007-09-18
    Description: Antibodies play a central role in immunity by forming an interface with the innate immune system and, typically, mediate proinflammatory activity. We describe a novel posttranslational modification that leads to anti-inflammatory activity of antibodies of immunoglobulin G, isotype 4 (IgG4). IgG4 antibodies are dynamic molecules that exchange Fab arms by swapping a heavy chain and attached light chain (half-molecule) with a heavy-light chain pair from another molecule, which results in bispecific antibodies. Mutagenesis studies revealed that the third constant domain is critical for this activity. The impact of IgG4 Fab arm exchange was confirmed in vivo in a rhesus monkey model with experimental autoimmune myasthenia gravis. IgG4 Fab arm exchange is suggested to be an important biological mechanism that provides the basis for the anti-inflammatory activity attributed to IgG4 antibodies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van der Neut Kolfschoten, Marijn -- Schuurman, Janine -- Losen, Mario -- Bleeker, Wim K -- Martinez-Martinez, Pilar -- Vermeulen, Ellen -- den Bleker, Tamara H -- Wiegman, Luus -- Vink, Tom -- Aarden, Lucien A -- De Baets, Marc H -- van de Winkel, Jan G J -- Aalberse, Rob C -- Parren, Paul W H I -- New York, N.Y. -- Science. 2007 Sep 14;317(5844):1554-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sanquin Research-AMC Landsteiner Laboratory, Department of Immunopathology, Plesmanlaan 125, 1066 CX Amsterdam, the Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17872445" target="_blank"〉PubMed〈/a〉
    Keywords: Allergens/immunology ; Animals ; Antibodies, Bispecific/immunology ; Antibodies, Monoclonal/immunology ; Antigens, CD20/immunology ; Antigens, Plant ; Autoantibodies/immunology ; Glycoproteins/immunology ; Humans ; Immunoglobulin Constant Regions/chemistry ; Immunoglobulin Fab Fragments/*chemistry/*immunology/metabolism ; Immunoglobulin G/*chemistry/*immunology/metabolism ; Immunoglobulin Heavy Chains ; Macaca mulatta ; Mice ; Mutation ; Myasthenia Gravis, Autoimmune, Experimental/immunology/prevention & control ; Protein Processing, Post-Translational ; Receptor, Epidermal Growth Factor/immunology ; Receptors, Cholinergic/immunology
    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: 1999-08-07
    Description: There is a long-standing controversy regarding the mechanisms that generate the functional subdivisions of the cerebral neocortex. One model proposes that thalamic axonal input specifies these subdivisions; the competing model postulates that patterning mechanisms intrinsic to the dorsal telencephalon generate neocortical regions. Gbx-2 mutant mice, whose thalamic differentiation is disrupted, were investigated. Despite the lack of cortical innervation by thalamic axons, neocortical region-specific gene expression (Cadherin-6, EphA-7, Id-2, and RZR-beta) developed normally. This provides evidence that patterning mechanisms intrinsic to the neocortex specify the basic organization of its functional subdivisions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miyashita-Lin, E M -- Hevner, R -- Wassarman, K M -- Martinez, S -- Rubenstein, J L -- NS34661-01A1/NS/NINDS NIH HHS/ -- R01 MH49428-01/MH/NIMH NIH HHS/ -- R01 MH51561-01A1/MH/NIMH NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Aug 6;285(5429):906-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nina Ireland Laboratory of Developmental Neurobiology, Department of Psychiatry, School of Medicine, University of California San Francisco, San Francisco, CA 94143-0984, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10436162" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/chemistry/*physiology ; Cadherins/genetics ; Calbindin 2 ; Carbocyanines ; DNA-Binding Proteins/genetics ; Gene Expression ; Homeodomain Proteins/genetics/physiology ; Immunohistochemistry ; In Situ Hybridization ; Inhibitor of Differentiation Proteins ; Lymphoid Enhancer-Binding Factor 1 ; Mice ; Mutation ; Neocortex/anatomy & histology/*embryology/growth & development/metabolism ; Nerve Fibers/physiology/ultrastructure ; Proteins/genetics ; Receptors, Cell Surface/genetics ; Receptors, Cytoplasmic and Nuclear/genetics ; Receptors, Melatonin ; S100 Calcium Binding Protein G/analysis ; Steroid 17-alpha-Hydroxylase/analysis ; Telencephalon/embryology/growth & development/physiology ; Thalamus/anatomy & histology/*embryology/growth & development/metabolism ; Transcription Factors/genetics
    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: 1998-02-07
    Description: Rab guanosine triphosphatases regulate vesicular transport and membrane traffic within eukaryotic cells. Here, a kinesin-like protein that interacts with guanosine triphosphate (GTP)-bound forms of Rab6 was identified. This protein, termed Rabkinesin-6, was localized to the Golgi apparatus and shown to play a role in the dynamics of this organelle. The carboxyl-terminal domain of Rabkinesin-6, which contains the Rab6-interacting domain, inhibited the effects of Rab6-GTP on intracellular transport. Thus, a molecular motor is a potential effector of a Rab protein, and coordinated action between members of these two families of proteins could control membrane dynamics and directional vesicular traffic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Echard, A -- Jollivet, F -- Martinez, O -- Lacapere, J J -- Rousselet, A -- Janoueix-Lerosey, I -- Goud, B -- New York, N.Y. -- Science. 1998 Jan 23;279(5350):580-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite Mixte de Recherche CNRS 144 et 168, Institut Curie, 26 rue d'Ulm, 75248 Paris Cedex 05, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9438855" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/metabolism ; Alkaline Phosphatase/metabolism ; Amino Acid Sequence ; Biological Transport ; Carrier Proteins/*metabolism ; Endoplasmic Reticulum/metabolism ; Golgi Apparatus/chemistry/*metabolism/ultrastructure ; Guanosine Triphosphate/metabolism ; HeLa Cells ; Humans ; Kinesin/analysis/chemistry/genetics/*metabolism ; Microtubules/metabolism/ultrastructure ; Molecular Sequence Data ; Molecular Weight ; *rab GTP-Binding Proteins ; ras Proteins/*metabolism
    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
    Publication Date: 2009-04-25
    Description: The imprints of domestication and breed development on the genomes of livestock likely differ from those of companion animals. A deep draft sequence assembly of shotgun reads from a single Hereford female and comparative sequences sampled from six additional breeds were used to develop probes to interrogate 37,470 single-nucleotide polymorphisms (SNPs) in 497 cattle from 19 geographically and biologically diverse breeds. These data show that cattle have undergone a rapid recent decrease in effective population size from a very large ancestral population, possibly due to bottlenecks associated with domestication, selection, and breed formation. Domestication and artificial selection appear to have left detectable signatures of selection within the cattle genome, yet the current levels of diversity within breeds are at least as great as exists within humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2735092/" 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/PMC2735092/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bovine HapMap Consortium -- Gibbs, Richard A -- Taylor, Jeremy F -- Van Tassell, Curtis P -- Barendse, William -- Eversole, Kellye A -- Gill, Clare A -- Green, Ronnie D -- Hamernik, Debora L -- Kappes, Steven M -- Lien, Sigbjorn -- Matukumalli, Lakshmi K -- McEwan, John C -- Nazareth, Lynne V -- Schnabel, Robert D -- Weinstock, George M -- Wheeler, David A -- Ajmone-Marsan, Paolo -- Boettcher, Paul J -- Caetano, Alexandre R -- Garcia, Jose Fernando -- Hanotte, Olivier -- Mariani, Paola -- Skow, Loren C -- Sonstegard, Tad S -- Williams, John L -- Diallo, Boubacar -- Hailemariam, Lemecha -- Martinez, Mario L -- Morris, Chris A -- Silva, Luiz O C -- Spelman, Richard J -- Mulatu, Woudyalew -- Zhao, Keyan -- Abbey, Colette A -- Agaba, Morris -- Araujo, Flabio R -- Bunch, Rowan J -- Burton, James -- Gorni, Chiara -- Olivier, Hanotte -- Harrison, Blair E -- Luff, Bill -- Machado, Marco A -- Mwakaya, Joel -- Plastow, Graham -- Sim, Warren -- Smith, Timothy -- Thomas, Merle B -- Valentini, Alessio -- Williams, Paul -- Womack, James -- Woolliams, John A -- Liu, Yue -- Qin, Xiang -- Worley, Kim C -- Gao, Chuan -- Jiang, Huaiyang -- Moore, Stephen S -- Ren, Yanru -- Song, Xing-Zhi -- Bustamante, Carlos D -- Hernandez, Ryan D -- Muzny, Donna M -- Patil, Shobha -- San Lucas, Anthony -- Fu, Qing -- Kent, Matthew P -- Vega, Richard -- Matukumalli, Aruna -- McWilliam, Sean -- Sclep, Gert -- Bryc, Katarzyna -- Choi, Jungwoo -- Gao, Hong -- Grefenstette, John J -- Murdoch, Brenda -- Stella, Alessandra -- Villa-Angulo, Rafael -- Wright, Mark -- Aerts, Jan -- Jann, Oliver -- Negrini, Riccardo -- Goddard, Mike E -- Hayes, Ben J -- Bradley, Daniel G -- Barbosa da Silva, Marcos -- Lau, Lilian P L -- Liu, George E -- Lynn, David J -- Panzitta, Francesca -- Dodds, Ken G -- R01 GM083606/GM/NIGMS NIH HHS/ -- R01 GM083606-02/GM/NIGMS NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 24;324(5926):528-32. doi: 10.1126/science.1167936.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19390050" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breeding ; Cattle/*genetics ; Female ; Gene Frequency ; *Genetic Variation ; *Genome ; Male ; Molecular Sequence Data ; Mutation ; *Polymorphism, Single Nucleotide ; Population Density
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2010-09-11
    Description: Fungal degradation of plant biomass may provide insights for improving cellulosic biofuel production. We show that the model cellulolytic fungus Neurospora crassa relies on a high-affinity cellodextrin transport system for rapid growth on cellulose. Reconstitution of the N. crassa cellodextrin transport system in Saccharomyces cerevisiae promotes efficient growth of this yeast on cellodextrins. In simultaneous saccharification and fermentation experiments, the engineered yeast strains more rapidly convert cellulose to ethanol when compared with yeast lacking this system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galazka, Jonathan M -- Tian, Chaoguang -- Beeson, William T -- Martinez, Bruno -- Glass, N Louise -- Cate, Jamie H D -- New York, N.Y. -- Science. 2010 Oct 1;330(6000):84-6. doi: 10.1126/science.1192838. Epub 2010 Sep 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20829451" target="_blank"〉PubMed〈/a〉
    Keywords: *Biofuels ; Biological Transport ; Biomass ; Cellobiose/metabolism ; Cellulase/metabolism ; Cellulose/*analogs & derivatives/*metabolism ; Dextrins/*metabolism ; Ethanol/metabolism ; Fermentation ; Fungal Proteins/genetics/*metabolism ; Genetic Engineering ; Kinetics ; Membrane Transport Proteins/genetics/*metabolism ; Neurospora crassa/genetics/growth & development/*metabolism ; Saccharomyces cerevisiae/genetics/growth & development/*metabolism ; Saccharomyces cerevisiae Proteins/metabolism ; beta-Glucosidase/metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1997-08-22
    Description: It has been suggested that European Middle Pleistocene humans, Neandertals, and prehistoric modern humans had a greater sexual dimorphism than modern humans. Analysis of body size variation and cranial capacity variation in the large sample from the Sima de los Huesos site in Spain showed instead that the sexual dimorphism is comparable in Middle Pleistocene and modern populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arsuaga, J L -- Carretero, J M -- Lorenzo, C -- Gracia, A -- Martinez, I -- Bermudez de Castro, J M -- Carbonell, E -- New York, N.Y. -- Science. 1997 Aug 22;277(5329):1086-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departamento de Paleontologia, Instituto de Geologia Economica, Facultad de Ciencias Geologicas, Universidad Complutense de Madrid, Ciudad Universitaria 28040 Madrid, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9262474" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Constitution ; Female ; *Fossils ; Hominidae/*anatomy & histology ; Humans ; Male ; *Sex Characteristics ; Skull/*anatomy & histology ; Spain
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2005-11-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez Arias, Alfonso -- New York, N.Y. -- Science. 2005 Nov 25;310(5752):1284-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of Cambridge, Cambridge CB2 3EH, UK. ama11@hermes.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16311322" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Animals ; Cell Nucleus/metabolism ; Drosophila Proteins/chemistry/*metabolism ; Drosophila melanogaster/genetics/*metabolism ; Endocytosis ; Frizzled Receptors ; Models, Neurological ; Mutation ; Neuromuscular Junction/*metabolism ; Protein Structure, Tertiary ; Proto-Oncogene Proteins/*metabolism ; Receptors, G-Protein-Coupled ; Receptors, Neurotransmitter/chemistry/*metabolism ; *Signal Transduction ; Wnt1 Protein
    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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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2004-01-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez-Perez, Enrique -- Moore, Graham -- New York, N.Y. -- Science. 2004 Jan 2;303(5654):49-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14704418" target="_blank"〉PubMed〈/a〉
    Keywords: Chromatids/physiology ; *Chromosome Pairing ; Chromosomes, Plant/*physiology ; DNA, Plant/metabolism ; DNA-Binding Proteins/metabolism ; Genes, Plant ; *Meiosis ; Mutation ; Plant Proteins/genetics/*physiology ; Rad51 Recombinase ; *Recombination, Genetic ; Synaptonemal Complex/metabolism ; Telomere/physiology ; Zea mays/*genetics/physiology
    Print ISSN: 0036-8075
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  • 9
    Publication Date: 2007-07-28
    Description: The construction of multicellular organisms depends on stem cells-cells that can both regenerate and produce daughter cells that undergo differentiation. Here, we show that the gaseous messenger ethylene modulates cell division in the cells of the quiescent center, which act as a source of stem cells in the seedling root. The cells formed through these ethylene-induced divisions express quiescent center-specific genes and can repress differentiation of surrounding initial cells, showing that quiescence is not required for these cells to signal to adjacent stem cells. We propose that ethylene is part of a signaling pathway that modulates cell division in the quiescent center in the stem cell niche during the postembryonic development of the root system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ortega-Martinez, Olga -- Pernas, Monica -- Carol, Rachel J -- Dolan, Liam -- BBS/E/J/00000168/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 Jul 27;317(5837):507-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17656722" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids, Cyclic/metabolism/pharmacology ; Arabidopsis/*cytology/genetics/growth & development/metabolism ; Arabidopsis Proteins/genetics/metabolism ; Cell Differentiation ; *Cell Division ; Ethylenes/biosynthesis/*metabolism ; Gene Expression ; Genes, Plant ; Glycine/analogs & derivatives/pharmacology ; Indoleacetic Acids/metabolism ; Mutation ; Naphthaleneacetic Acids/pharmacology ; Plant Roots/*cytology/growth & development/metabolism ; Protein Kinases/genetics/metabolism ; Signal Transduction ; Stem Cells/*cytology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2008-07-19
    Description: The large majority of antibiotics currently used for treating infections and the antibiotic resistance genes acquired by human pathogens each have an environmental origin. Recent work indicates that the function of these elements in their environmental reservoirs may be very distinct from the "weapon-shield" role they play in clinical settings. Changes in natural ecosystems, including the release of large amounts of antimicrobials, might alter the population dynamics of microorganisms, including selection of resistance, with consequences for human health that are difficult to predict.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, Jose L -- New York, N.Y. -- Science. 2008 Jul 18;321(5887):365-7. doi: 10.1126/science.1159483.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departamento de Biotecnologia Microbiana, Centro Nacional de Biotecnologia (CSIC), Darwin 3, Campus UAM, Cantoblanco, 28049-Madrid, and CIBERESP, Spain. jlmtnez@cnb.csic.es〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18635792" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/*metabolism/*pharmacology/therapeutic use ; Bacteria/*drug effects/genetics/metabolism ; Bacterial Infections/drug therapy/microbiology ; Drug Resistance, Bacterial/*genetics ; Drug Resistance, Multiple, Bacterial/*genetics ; *Ecosystem ; Evolution, Molecular ; Gene Transfer, Horizontal ; *Genes, Bacterial ; Humans ; Mutation ; Soil Microbiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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