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  • 1
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    Positive selection through a motif in the alphabeta T cell receptor (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-07
    Description: The two lineages of T cells, alphabeta and gammadelta, differ in their developmental requirements: only alphabeta T cells require major histocompatibility complex recognition, a process known as positive selection. The alphabeta T cell receptor (TCR), but not its gammadelta counterpart, contains a motif within the alpha-chain connecting peptide domain (alpha-CPM) that has been conserved over the last 500 million years. In transgenic mice expressing an alphabeta TCR lacking the alpha-CPM, thymocytes were blocked in positive selection but could undergo negative selection. Thus, the alpha-CPM seems to participate in the generation of signals required for positive selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Backstrom, B T -- Muller, U -- Hausmann, B -- Palmer, E -- New York, N.Y. -- Science. 1998 Aug 7;281(5378):835-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Basel Institute for Immunology, CH-4005 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9694657" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigen-Presenting Cells/immunology ; Antigens, CD3/analysis ; CD4-Positive T-Lymphocytes/immunology ; Cell Lineage ; Cells, Cultured ; Histocompatibility Antigens Class II/immunology ; Ligands ; Lymphocyte Count ; Membrane Proteins/analysis ; Mice ; Mice, Inbred C57BL ; Mice, Nude ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; Receptor-CD3 Complex, Antigen, T-Cell/immunology/metabolism ; Receptors, Antigen, T-Cell/analysis ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/genetics/*immunology ; Signal Transduction ; T-Lymphocyte Subsets/*immunology ; Thymus Gland/immunology
    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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  • 2
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    Signaling life and death in the thymus: timing is everything (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-03-22
    Description: T lymphocytes are generated in the thymus, where developing thymocytes must accept one of two fates: They either differentiate or they die. These fates are chiefly determined by signals that originate from the T cell receptor (TCR), a single receptor complex with a remarkable capacity to decide between distinct cell fates. This review explores TCR signaling in thymocytes and focuses on the kinetic aspects of ligand binding, coreceptor involvement, protein phosphorylation, and mitogen-activated protein kinase (MAPK) activation. Understanding the logic of TCR signaling may eventually explain how thymocytes and T cells distinguish self from nonself, a phenomenon that has fascinated immunologists for 50 years.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Werlen, Guy -- Hausmann, Barbara -- Naeher, Dieter -- Palmer, Ed -- New York, N.Y. -- Science. 2003 Mar 21;299(5614):1859-63.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Transplantation Immunology and Nephrology, Department of Research, University Hospital-Basel, CH-4031 Basel, Switzerland. guy.werlen@unibas.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12649474" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens/immunology ; Antigens, CD/immunology/metabolism ; *Apoptosis ; Carrier Proteins/metabolism ; Cell Differentiation ; Cell Division ; Enzyme Activation ; Humans ; Ligands ; MAP Kinase Signaling System ; Major Histocompatibility Complex/immunology ; *Membrane Proteins ; Mitogen-Activated Protein Kinases/metabolism ; Phosphoproteins/metabolism ; Receptors, Antigen, T-Cell, alpha-beta/chemistry/immunology/*physiology ; Selection, Genetic ; Self Tolerance ; *Signal Transduction ; T-Lymphocytes/immunology/*physiology ; Thymus Gland/*cytology
    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)
    Location Call Number Expected Availability
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