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  • 1
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    Peptide binding and presentation by mouse CD1 (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-07-14
    Description: CD1 molecules are distantly related to the major histocompatibility complex (MHC) class I proteins. They are of unknown function. Screening random peptide phage display libraries with soluble empty mouse CD1 (mCD1) identified a peptide binding motif. It consists of three anchor positions occupied by aromatic or bulky hydrophobic amino acids. Equilibrium binding studies demonstrated that mCD1 binds peptides containing the appropriate motif with relatively high affinity. However, in contrast to classical MHC class I molecules, strong binding to mCD1 required relatively long peptides. Peptide-specific, mCD1-restricted T cell responses can be raised, which suggests that the findings are of immunological significance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castano, A R -- Tangri, S -- Miller, J E -- Holcombe, H R -- Jackson, M R -- Huse, W D -- Kronenberg, M -- Peterson, P A -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):223-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542403" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigen Presentation ; Antigens, CD/chemistry/*immunology/metabolism ; Antigens, CD1 ; Cell Line ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Peptides/chemistry/*immunology/metabolism ; T-Lymphocytes, Cytotoxic/*immunology ; Transfection
    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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    An alphabeta T cell receptor structure at 2.5 A and its orientation in the TCR-MHC complex (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-11
    Description: The central event in the cellular immune response to invading microorganisms is the specific recognition of foreign peptides bound to major histocompatibility complex (MHC) molecules by the alphabeta T cell receptor (TCR). The x-ray structure of the complete extracellular fragment of a glycosylated alphabeta TCR was determined at 2.5 angstroms, and its orientation bound to a class I MHC-peptide (pMHC) complex was elucidated from crystals of the TCR-pMHC complex. The TCR resembles an antibody in the variable Valpha and Vbeta domains but deviates in the constant Calpha domain and in the interdomain pairing of Calpha with Cbeta. Four of seven possible asparagine-linked glycosylation sites have ordered carbohydrate moieties, one of which lies in the Calpha-Cbeta interface. The TCR combining site is relatively flat except for a deep hydrophobic cavity between the hypervariable CDR3s (complementarity-determining regions) of the alpha and beta chains. The 2C TCR covers the class I MHC H-2Kb binding groove so that the Valpha CDRs 1 and 2 are positioned over the amino-terminal region of the bound dEV8 peptide, the Vbeta chain CDRs 1 and 2 are over the carboxyl-terminal region of the peptide, and the Valpha and Vbeta CDR3s straddle the peptide between the helices around the central position of the peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia, K C -- Degano, M -- Stanfield, R L -- Brunmark, A -- Jackson, M R -- Peterson, P A -- Teyton, L -- Wilson, I A -- R01 CA58896/CA/NCI NIH HHS/ -- T32-A107244/PHS HHS/ -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):209-19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and the Skaggs Institute of Chemical Biology, Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824178" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbohydrate Sequence ; Cells, Cultured ; Crystallization ; Crystallography, X-Ray ; Drosophila melanogaster ; Glycosylation ; H-2 Antigens/*chemistry/immunology/metabolism ; Hydrogen Bonding ; Major Histocompatibility Complex ; Mice ; Models, Molecular ; Molecular Sequence Data ; Peptides/*chemistry/immunology/metabolism ; *Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/immunology/metabolism ; Recombinant Proteins ; T-Lymphocytes, Cytotoxic/*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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  • 3
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    Coatings for directional eutectics (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Significant advances have been made in the development of an environmentally stable coating for a very high strength, directionally solidified eutectic alloy designated NiTaC-13. Three duplex (two-layer) coatings survived 3,000 hours on a cyclic oxidation test (1,100 C to 90 C). These coatings were fabricated by first depositing a layer of NiCrAl(Y) by vacuum evaporation from an electron beam heated source, followed by depositing an aluminizing overlayer. The alloy after exposure with these coatings was denuded of carbide fibers at the substrate/coating interface. It was demonstrated that TaC fiber denudation can be greatly retarded by applying a carbon-bearing coating. The coating was applied by thermal spraying followed by aluminization. Specimens coated with NiCrAlCY+Al survived over 2,000 hours in the cyclic oxidation test with essentially no TaC denudation. Coating ductility was studied for coated and heat-treated bars, and stress rupture life at 871 C and 1,100 C was determined for coated and cycled bars.
    Keywords: COMPOSITE MATERIALS
    Type: NASA-CR-135050 , SRD-76-076
    Format: application/pdf
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  • 4
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    Conference on In Situ Composites, 2nd, Bolton Landing, N.Y., September 2-5, 1975, Proceedings (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The present collection of papers deals with advances in several areas of interest in in-situ composites. Major areas discussed include solidification and structural control, physical properties, mechanical behavior, stability, environmental response, and development of new metallic and ceramic systems. New evidence about directional solidification in terms of temperature gradients is presented along with solidification rates for successful formation of in-situ composite structures. Much is learned about the factors that control structure in directionally solidified eutectic alloys and the relationship of properties to structure, especially the change in properties as a function of operating environment. Less progress is achieved in the area of physical properties than in the area of mechanical properties. Individual items are announced in this issue.
    Keywords: COMPOSITE MATERIALS
    Type: Conference on In Situ Composites; Sep 02, 1975 - Sep 05, 1975; Bolton Landing, NY
    Format: text
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  • 5
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    Superalloy eutectic composites with the VI A refractory elements - Cr, Mo and W (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The paper discusses the phase equilibria for the ternary systems NiAlCr, NiAlMo, and NiAlW, with emphasis on reactions from the liquid state, although some of the solid state reactions are mentioned. It is shown that eutectics in the Ni-Al-refractory element (Cr, Mo, W) systems offer the potential for high-temperature turbine blade and vane applications. In particular, it is shown that the phase diagrams of these ternary systems can be manipulated to alter the eutectic phases and morphologies by simple quaternary alloying modifications. The resultant combination of chemistry and structure can be controlled to ensure a behavior that is well-matched to hot section component materials requirements.
    Keywords: COMPOSITE MATERIALS
    Type: International Symposium on Superalloys: Metallurgy and manufacture; Sep 12, 1976 - Sep 15, 1976; Seven Springs, PA
    Format: text
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