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  • Articles  (4)
  • American Association for the Advancement of Science (AAAS)  (4)
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  • Articles  (4)
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  • 1
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    Radiocarbon re-dating of contact-era Iroquoian history in northeastern North America (2018)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2018
    Description: 〈p〉A time frame for late Iroquoian prehistory is firmly established on the basis of the presence/absence of European trade goods and other archeological indicators. However, independent dating evidence is lacking. We use 86 radiocarbon measurements to test and (re)define existing chronological understanding. Warminster, often associated with Cahiagué visited by S. de Champlain in 1615–1616 CE, yields a compatible radiocarbon-based age. However, a well-known late prehistoric site sequence in southern Ontario, Draper-Spang-Mantle, usually dated ~1450–1550, yields much later radiocarbon-based dates of ~1530–1615. The revised time frame dramatically rewrites 16th-century contact-era history in this region. Key processes of violent conflict, community coalescence, and the introduction of European goods all happened much later and more rapidly than previously assumed. Our results suggest the need to reconsider current understandings of contact-era dynamics across northeastern North America.〈/p〉
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Radiocarbon re-dating of contact-era Iroquoian history in northeastern North America (2018)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2018-12-06
    Description: A time frame for late Iroquoian prehistory is firmly established on the basis of the presence/absence of European trade goods and other archeological indicators. However, independent dating evidence is lacking. We use 86 radiocarbon measurements to test and (re)define existing chronological understanding. Warminster, often associated with Cahiagué visited by S. de Champlain in 1615–1616 CE, yields a compatible radiocarbon-based age. However, a well-known late prehistoric site sequence in southern Ontario, Draper-Spang-Mantle, usually dated ~1450–1550, yields much later radiocarbon-based dates of ~1530–1615. The revised time frame dramatically rewrites 16th-century contact-era history in this region. Key processes of violent conflict, community coalescence, and the introduction of European goods all happened much later and more rapidly than previously assumed. Our results suggest the need to reconsider current understandings of contact-era dynamics across northeastern North America.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Phosphorylation of the autophagy receptor optineurin restricts Salmonella growth (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-05-28
    Description: Selective autophagy can be mediated via receptor molecules that link specific cargoes to the autophagosomal membranes decorated by ubiquitin-like microtubule-associated protein light chain 3 (LC3) modifiers. Although several autophagy receptors have been identified, little is known about mechanisms controlling their functions in vivo. In this work, we found that phosphorylation of an autophagy receptor, optineurin, promoted selective autophagy of ubiquitin-coated cytosolic Salmonella enterica. The protein kinase TANK binding kinase 1 (TBK1) phosphorylated optineurin on serine-177, enhancing LC3 binding affinity and autophagic clearance of cytosolic Salmonella. Conversely, ubiquitin- or LC3-binding optineurin mutants and silencing of optineurin or TBK1 impaired Salmonella autophagy, resulting in increased intracellular bacterial proliferation. We propose that phosphorylation of autophagy receptors might be a general mechanism for regulation of cargo-selective autophagy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3714538/" 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/PMC3714538/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wild, Philipp -- Farhan, Hesso -- McEwan, David G -- Wagner, Sebastian -- Rogov, Vladimir V -- Brady, Nathan R -- Richter, Benjamin -- Korac, Jelena -- Waidmann, Oliver -- Choudhary, Chunaram -- Dotsch, Volker -- Bumann, Dirk -- Dikic, Ivan -- 250241/European Research Council/International -- New York, N.Y. -- Science. 2011 Jul 8;333(6039):228-33. doi: 10.1126/science.1205405. Epub 2011 May 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Frankfurt Institute for Molecular Life Sciences and Institute of Biochemistry II, Goethe University School of Medicine, Frankfurt (Main), Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21617041" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/metabolism ; *Autophagy ; Cell Line, Tumor ; Cytosol/*microbiology ; HeLa Cells ; Humans ; Immunity, Innate ; Microtubule-Associated Proteins/metabolism ; Models, Biological ; Nuclear Proteins/chemistry/metabolism ; Phosphorylation ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein-Serine-Threonine Kinases/metabolism ; RNA Interference ; Salmonella typhimurium/*growth & development/immunology ; Transcription Factor TFIIIA/chemistry/genetics/*metabolism ; Ubiquitin/metabolism
    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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  • 4
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    Silicone rubber substrata: a new wrinkle in the study of cell locomotion (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-04-11
    Description: When tissue cells are cultured on very thin sheets of cross-linked silicone fluid, the traction forces the cells exert are made visible as elastic distortion and wrinkling of this substratum. Around explants this pattern of wrinkling closely resembles the "center effects" long observed in plasma clots and traditionally attributed to dehydration shrinkage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harris, A K -- Wild, P -- Stopak, D -- New York, N.Y. -- Science. 1980 Apr 11;208(4440):177-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6987736" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Movement ; Cells, Cultured/physiology ; Chick Embryo ; Microscopy, Interference ; Microscopy, Phase-Contrast ; *Silicone Elastomers
    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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