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  • 1
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    Beta-arrestin 2 mediates endocytosis of type III TGF-beta receptor and down-regulation of its signaling (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-09-06
    Description: beta-Arrestins bind to activated seven transmembrane-spanning (7TMS) receptors (G protein-coupled receptors) after the receptors are phosphorylated by G protein-coupled receptor kinases (GRKs), thereby regulating their signaling and internalization. Here, we demonstrate an unexpected and analogous role of beta-arrestin 2 (betaarr2) for the single transmembrane-spanning type III transforming growth factor-beta (TGF-beta) receptor (TbetaRIII, also referred to as betaglycan). Binding of betaarr2 to TbetaRIII was also triggered by phosphorylation of the receptor on its cytoplasmic domain (likely at threonine 841). However, such phosphorylation was mediated by the type II TGF-beta receptor (TbetaRII), which is itself a kinase, rather than by a GRK. Association with betaarr2 led to internalization of both receptors and down-regulation of TGF-beta signaling. Thus, the regulatory actions of beta-arrestins are broader than previously appreciated, extending to the TGF-beta receptor family as well.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Wei -- Kirkbride, Kellye C -- How, Tam -- Nelson, Christopher D -- Mo, Jinyao -- Frederick, Joshua P -- Wang, Xiao-Fan -- Lefkowitz, Robert J -- Blobe, Gerard C -- CA 75368/CA/NCI NIH HHS/ -- CA 91816/CA/NCI NIH HHS/ -- HL 16037/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 5;301(5638):1394-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Duke University Medical Center, Departments of Medicine and Biochemistry, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12958365" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Arrestins/genetics/*metabolism ; Cell Line ; Cell Membrane/metabolism ; Cytoplasm/metabolism ; Down-Regulation ; *Endocytosis ; Humans ; Keratinocytes/metabolism ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Mutagenesis ; Phosphorylation ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases ; Proteoglycans/chemistry/genetics/*metabolism ; RNA, Small Interfering ; Receptors, Transforming Growth Factor beta/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Transfection ; Transforming Growth Factor beta ; Transforming Growth Factor beta1
    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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    PAPER CURRENT
  • 2
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    Griffith diffusers (1979)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: Contoured wall diffusers are designed by using an inverse method. The prescribed wall velocity distribution(s) was taken from the high lift airfoil designed by A. A. Griffith in 1938; therefore, such diffusers are named Griffith diffusers. First the formulation of the inverse problem and the method of solution are outlined. Then the typical contour of a two-dimensional diffuser and velocity distributions across the flow channel at various stations are presented. For a Griffith diffuser to operate as it is designed, boundary layer suction is necessary. Discussion of the percentage of through-flow required to be removed for the purpose of boundary layer control is given. Finally, reference is made to the latest version of a computer program for a two-dimensional diffuser requiring only area ratio, nondimensional length and suction percentage as inputs.
    Keywords: AERODYNAMICS
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    An inverse problem design method for branched and unbranched axially symmetrical ducts (1976)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: This paper concerns the potential flow design of axially symmetrical ducts of both circular and annular cross section with or without wall suction or blowing slots. The objective of the work was to develop a method by which such ducts could be designed with directly prescribed wall pressure variation. Previous axially symmetrical design methods applied only to circular cross sectional ducts and required that the pressure distribution be prescribed along the duct centerline and not along the duct wall. The present method uses an inverse problem approach which extends the method of Stanitz to the axially symmetrical case, and an approximation is used to account for the stagnation point in branched duct designs. Two examples of successful designs of diffusers with suction slots are presented.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 76-422 , Fluid and Plasma Dynamics Conference; Jul 14, 1976 - Jul 16, 1976; San Diego, CA
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    NASA TECHNICAL REPORTS
  • 4
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    The design and performance of axially symmetrical contoured wall diffusers employing suction boundary layer control (1974)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: This paper presents a procedure for the design and the performance prediction of axially symmetrical contoured wall diffusers employing suction boundary layer control. An inverse problem approach was used in the potential flow design of the diffuser wall contours. The experimentally observed flow characteristics and the stability of flows within the diffuser are also described. Guidelines for the design of low suction (less than 10 percent of the inlet flow) and thus high effectiveness contoured wall diffusers are also provided based on the results of the experimental program.
    Keywords: AERODYNAMICS
    Type: ASME PAPER 74-GT-152 , Gas Turbine Conference and Products Show; Mar 30, 1974 - Apr 04, 1974; Zurich; Switzerland
    Format: text
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