• Login
    View Item 
    •   Home
    • UMass Chan Student Research and Publications
    • Morningside Graduate School of Biomedical Sciences
    • Morningside Graduate School of Biomedical Sciences Scholarly Publications
    • View Item
    •   Home
    • UMass Chan Student Research and Publications
    • Morningside Graduate School of Biomedical Sciences
    • Morningside Graduate School of Biomedical Sciences Scholarly Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of eScholarship@UMassChanCommunitiesPublication DateAuthorsUMass Chan AffiliationsTitlesDocument TypesKeywordsThis CollectionPublication DateAuthorsUMass Chan AffiliationsTitlesDocument TypesKeywords

    My Account

    LoginRegister

    Help

    AboutSubmission GuidelinesData Deposit PolicySearchingAccessibilityTerms of UseWebsite Migration FAQ

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Direct evidence for ATP modulation of sugar transport in human erythrocyte ghosts

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Authors
    Hebert, Daniel N.
    Carruthers, Anthony
    UMass Chan Affiliations
    Department of Biochemistry and Molecular Pharmacology
    Graduate School of Biomedical Sciences
    Document Type
    Journal Article
    Publication Date
    1986-08-05
    Keywords
    Adenosine Diphosphate; Adenosine Monophosphate; Adenosine Triphosphate; Apyrase; Biological Transport; Blood Glucose; Calcium; Cytochalasin B; Erythrocyte Membrane; Humans; Kinetics; Magnesium
    Life Sciences
    Medicine and Health Sciences
    
    Metadata
    Show full item record
    Link to Full Text
    http://www.jbc.org/content/261/22/10093.short
    Abstract
    Sugar transport in human erythrocyte ghosts is modulated by low molecular weight factors present in red cell cytosol that induce an asymmetry in Michaelis and velocity constants for sugar entry and exit (Carruthers, A., and Melchior, D. L. (1983) Biochim. Biophys. Acta 728, 254-266). This study examines the possibility that ATP is the transport-modulating factor. The intracellular factor must satisfy at least three criteria. It must reduce Km and Vmax for sugar efflux from inside-out red cell membrane vesicles. It should increase Km for efflux from red cell ghosts. It should have a molecular weight of less than 10 kDa. These criteria are satisfied by ATP. AMP, ADP, GTP, UTP, and ITP are without effect on sugar transport. The following results support the view that the cytosolic factor is ATP. Red cell lysate (obtained by hypotonic lysis of red cells) is unable to modify transport following dialysis against ATP-free medium. The ability of lysate to modify transport is retained following acid extraction. ATP depletion of acid-extracted lysate by treatment with apyrase results in the loss of transport-modulating potency. Myokinase partly restores both the ATP content and the ability of ATP-depleted (apyrase-treated) lysate to modify transport. Addition of ATP to ATP-depleted lysate mimics the ability to myokinase to restore the transport-modulating potency of lysate. ATP is without effect on the number and molecular size of D-glucose-sensitive cytochalasin B-binding proteins in the red cell membrane. These findings demonstrate that the transport-modulating potency of red cell cytosol is quantitatively accounted for by intracellular ATP which acts to modify the catalytic activity of plasmalemmal transporters.
    Source

    J Biol Chem. 1986 Aug 5;261(22):10093-9.

    Permanent Link to this Item
    http://hdl.handle.net/20.500.14038/32427
    PubMed ID
    3733703
    Related Resources

    Link to article in PubMed

    Collections
    Morningside Graduate School of Biomedical Sciences Scholarly Publications

    entitlement

    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Lamar Soutter Library, UMass Chan Medical School | 55 Lake Avenue North | Worcester, MA 01655 USA
    Quick Guide | escholarship@umassmed.edu
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.