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Regulating the Retention of T-cell Receptor Alpha Chain Variants Within the Endoplasmic Reticulum: Ca(2+)-dependent Association with BiP

Overview
Journal J Cell Biol
Specialty Cell Biology
Date 1991 Jul 1
PMID 1649196
Citations 68
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Abstract

Immunoglobulin heavy chain binding protein (BiP, GRP 78) coprecipitates with soluble and membrane-associated variants of the T-cell antigen receptor alpha chain (TCR-alpha) which are stably retained within the ER. Chelation of Ca2+ during solubilization of cells leads to the dissociation of BiP from the TCR-alpha variants, which is dependent upon the availability of Mg2+ and hydrolyzable ATP; this suggests that Ca2+ levels can serve to modulate the association/dissociation of these proteins with BiP. In vivo treatment of cells expressing either the soluble or membrane-anchored TCR-alpha variants with the Ca2+ ionophore, A23187, or an inhibitor of an ER Ca(2+)-ATPase, thapsigargin, or the membrane-permeant Ca2+ chelator BAPTA-AM, results in the redistribution of these proteins out of the ER and their subsequent secretion or cell surface expression. Under the same assay conditions, no movement of BiP out of the ER is observed. Taken together, these observations indicate that decreased Ca2+ levels result in the dissociation of a protein bound to BiP, leading to its release from ER retention. These data suggest that the intracellular fate of newly synthesized proteins stably associated with BiP can be regulated by Ca2+ levels in the ER.

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References
1.
Moore E, Becker P, Fogarty K, Williams D, Fay F . Ca2+ imaging in single living cells: theoretical and practical issues. Cell Calcium. 1990; 11(2-3):157-79. DOI: 10.1016/0143-4160(90)90068-6. View

2.
Di Virgilio F, Steinberg T, Silverstein S . Inhibition of Fura-2 sequestration and secretion with organic anion transport blockers. Cell Calcium. 1990; 11(2-3):57-62. DOI: 10.1016/0143-4160(90)90059-4. View

3.
Tsien R, Harootunian A . Practical design criteria for a dynamic ratio imaging system. Cell Calcium. 1990; 11(2-3):93-109. DOI: 10.1016/0143-4160(90)90063-z. View

4.
Bonifacino J, Suzuki C, Klausner R . A peptide sequence confers retention and rapid degradation in the endoplasmic reticulum. Science. 1990; 247(4938):79-82. DOI: 10.1126/science.2294595. View

5.
Samelson L, Germain R, Schwartz R . Monoclonal antibodies against the antigen receptor on a cloned T-cell hybrid. Proc Natl Acad Sci U S A. 1983; 80(22):6972-6. PMC: 390108. DOI: 10.1073/pnas.80.22.6972. View