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Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum

Two techniques have been modified to provide simple means for the identification of molecules which bind concanavalin A (Con A). Crossed immunoelectrophoresis was altered by replacing antibody with Con A, and receptors were identified by the precipitin arcs which they produced. Con A, tagged with fl...

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Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1977
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2109878/
https://www.ncbi.nlm.nih.gov/pubmed/559679
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description Two techniques have been modified to provide simple means for the identification of molecules which bind concanavalin A (Con A). Crossed immunoelectrophoresis was altered by replacing antibody with Con A, and receptors were identified by the precipitin arcs which they produced. Con A, tagged with fluorescein isothiocyanate, was also diffused into prefixed sodium dodecyl sulfate (SDS)-polyacrylamide gels, and additional receptors identified by fluorescence. More than 35 molecules in the plasma membranes of the cellular slime mold Dictyostelium discoideum which bind Con A were identified with these techniques. At least 12 of these diminish and 12 increase in importance as receptors during differentiation of the cells from the vegetative to the preculmination stage of development. In the course of these experiments, it was possible to confirm the presence of the galactose- binding protein discoidin, in the plasma membrane, by electrophoresing membrane proteins into an agarose gel. This lectin regains its sugar- binding activity after denaturation and electrophoresis in SDS.
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spelling pubmed-21098782008-05-01 Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum J Cell Biol Articles Two techniques have been modified to provide simple means for the identification of molecules which bind concanavalin A (Con A). Crossed immunoelectrophoresis was altered by replacing antibody with Con A, and receptors were identified by the precipitin arcs which they produced. Con A, tagged with fluorescein isothiocyanate, was also diffused into prefixed sodium dodecyl sulfate (SDS)-polyacrylamide gels, and additional receptors identified by fluorescence. More than 35 molecules in the plasma membranes of the cellular slime mold Dictyostelium discoideum which bind Con A were identified with these techniques. At least 12 of these diminish and 12 increase in importance as receptors during differentiation of the cells from the vegetative to the preculmination stage of development. In the course of these experiments, it was possible to confirm the presence of the galactose- binding protein discoidin, in the plasma membrane, by electrophoresing membrane proteins into an agarose gel. This lectin regains its sugar- binding activity after denaturation and electrophoresis in SDS. The Rockefeller University Press 1977-07-01 /pmc/articles/PMC2109878/ /pubmed/559679 Text en This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Articles
Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum
title Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum
title_full Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum
title_fullStr Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum
title_full_unstemmed Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum
title_short Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of Dictyostelium discoideum
title_sort identification of concanavalin a receptors and galactose-binding proteins in purified plasma membranes of dictyostelium discoideum
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2109878/
https://www.ncbi.nlm.nih.gov/pubmed/559679