author_facet Klein, C
Lubs-Haukeness, J
Simons, S
Klein, C
Lubs-Haukeness, J
Simons, S
author Klein, C
Lubs-Haukeness, J
Simons, S
spellingShingle Klein, C
Lubs-Haukeness, J
Simons, S
The Journal of cell biology
cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
Cell Biology
author_sort klein, c
spelling Klein, C Lubs-Haukeness, J Simons, S 0021-9525 1540-8140 Rockefeller University Press Cell Biology http://dx.doi.org/10.1083/jcb.100.3.715 <jats:p>Stimulation, within 1 min after cAMP stimulation, of aggregation-competent Dictyostelium discoideum amebae was found to cause a rapid (within 1 min) modification of the cell's surface cAMP receptor. The modified receptor migrated on SDS PAGE as a 47,000-mol-wt protein, as opposed to a 45,000-mol-wt protein labeled on unstimulated cells. The length of time this modified receptor could be detected depended upon the strength of the cAMP stimulus: 3-4 min after treatment with 10(-7) M cAMP, cells no longer possessed the 47,000-mol-wt form of the cAMP receptor. Instead, the 45,000-mol-wt form was present. Stimulation of cells with 10(-5) M cAMP, however, resulted in the persistent (over 15 min) expression of the modified receptor. The time course, concentration dependence, and specificity of stimulus for this cAMP-induced shift in the cAMP receptor were found to parallel the cAMP-stimulated phosphorylation of a 47,000-mol-wt protein. In addition, both phenomena were shown to occur in the absence of endogenous cAMP synthesis. The possibility that the cAMP receptor is phosphorylated in response to cAMP stimulation, and the role of this event in cell desensitization, are discussed.</jats:p> cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum. The Journal of cell biology
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series The Journal of cell biology
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title cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_unstemmed cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_full cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_fullStr cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_full_unstemmed cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_short cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_sort camp induces a rapid and reversible modification of the chemotactic receptor in dictyostelium discoideum.
topic Cell Biology
url http://dx.doi.org/10.1083/jcb.100.3.715
publishDate 1985
physical 715-720
description <jats:p>Stimulation, within 1 min after cAMP stimulation, of aggregation-competent Dictyostelium discoideum amebae was found to cause a rapid (within 1 min) modification of the cell's surface cAMP receptor. The modified receptor migrated on SDS PAGE as a 47,000-mol-wt protein, as opposed to a 45,000-mol-wt protein labeled on unstimulated cells. The length of time this modified receptor could be detected depended upon the strength of the cAMP stimulus: 3-4 min after treatment with 10(-7) M cAMP, cells no longer possessed the 47,000-mol-wt form of the cAMP receptor. Instead, the 45,000-mol-wt form was present. Stimulation of cells with 10(-5) M cAMP, however, resulted in the persistent (over 15 min) expression of the modified receptor. The time course, concentration dependence, and specificity of stimulus for this cAMP-induced shift in the cAMP receptor were found to parallel the cAMP-stimulated phosphorylation of a 47,000-mol-wt protein. In addition, both phenomena were shown to occur in the absence of endogenous cAMP synthesis. The possibility that the cAMP receptor is phosphorylated in response to cAMP stimulation, and the role of this event in cell desensitization, are discussed.</jats:p>
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author Klein, C, Lubs-Haukeness, J, Simons, S
author_facet Klein, C, Lubs-Haukeness, J, Simons, S, Klein, C, Lubs-Haukeness, J, Simons, S
author_sort klein, c
container_issue 3
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container_title The Journal of cell biology
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description <jats:p>Stimulation, within 1 min after cAMP stimulation, of aggregation-competent Dictyostelium discoideum amebae was found to cause a rapid (within 1 min) modification of the cell's surface cAMP receptor. The modified receptor migrated on SDS PAGE as a 47,000-mol-wt protein, as opposed to a 45,000-mol-wt protein labeled on unstimulated cells. The length of time this modified receptor could be detected depended upon the strength of the cAMP stimulus: 3-4 min after treatment with 10(-7) M cAMP, cells no longer possessed the 47,000-mol-wt form of the cAMP receptor. Instead, the 45,000-mol-wt form was present. Stimulation of cells with 10(-5) M cAMP, however, resulted in the persistent (over 15 min) expression of the modified receptor. The time course, concentration dependence, and specificity of stimulus for this cAMP-induced shift in the cAMP receptor were found to parallel the cAMP-stimulated phosphorylation of a 47,000-mol-wt protein. In addition, both phenomena were shown to occur in the absence of endogenous cAMP synthesis. The possibility that the cAMP receptor is phosphorylated in response to cAMP stimulation, and the role of this event in cell desensitization, are discussed.</jats:p>
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spelling Klein, C Lubs-Haukeness, J Simons, S 0021-9525 1540-8140 Rockefeller University Press Cell Biology http://dx.doi.org/10.1083/jcb.100.3.715 <jats:p>Stimulation, within 1 min after cAMP stimulation, of aggregation-competent Dictyostelium discoideum amebae was found to cause a rapid (within 1 min) modification of the cell's surface cAMP receptor. The modified receptor migrated on SDS PAGE as a 47,000-mol-wt protein, as opposed to a 45,000-mol-wt protein labeled on unstimulated cells. The length of time this modified receptor could be detected depended upon the strength of the cAMP stimulus: 3-4 min after treatment with 10(-7) M cAMP, cells no longer possessed the 47,000-mol-wt form of the cAMP receptor. Instead, the 45,000-mol-wt form was present. Stimulation of cells with 10(-5) M cAMP, however, resulted in the persistent (over 15 min) expression of the modified receptor. The time course, concentration dependence, and specificity of stimulus for this cAMP-induced shift in the cAMP receptor were found to parallel the cAMP-stimulated phosphorylation of a 47,000-mol-wt protein. In addition, both phenomena were shown to occur in the absence of endogenous cAMP synthesis. The possibility that the cAMP receptor is phosphorylated in response to cAMP stimulation, and the role of this event in cell desensitization, are discussed.</jats:p> cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum. The Journal of cell biology
spellingShingle Klein, C, Lubs-Haukeness, J, Simons, S, The Journal of cell biology, cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum., Cell Biology
title cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_full cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_fullStr cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_full_unstemmed cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_short cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
title_sort camp induces a rapid and reversible modification of the chemotactic receptor in dictyostelium discoideum.
title_unstemmed cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.
topic Cell Biology
url http://dx.doi.org/10.1083/jcb.100.3.715