Abstract
The store-operated calcium channel (SOC) located in the plasma membrane (PM) mediates capacitative entry of extracellular calcium after depletion of intracellular calcium stores in the endoplasmic or sarcoplasmic reticulum (ER/SR)1,2. An intimate interaction between the PM and the ER/SR is essential for the operation of this calcium signalling pathway3,4,5. Mitsugumin 29 (MG29) is a synaptophysin-family-related protein located in the junction between the PM and SR of skeletal muscle6,7. Here, we identify SOC in skeletal muscle and characterise its regulation by MG29 and the ryanodine receptor (RyR) located in the SR. Targeted deletion of mg29 alters the junctional membrane structure, causes severe dysfunction of SOC and SR calcium homeostasis and increases the susceptibility of muscle to fatigue stimulation8. Severe dysfunction of SOC is also identified in muscle cells lacking both type 1 and type 3 RyRs, indicating that SOC activation requires an intact interaction between the PM and the SR, and is linked to conformational changes of RyRs. Whereas defective SOC seems to be inconsequential to short-term excitation–contraction coupling, the slow cumulative calcium entry through SOC is crucial for long-term calcium homeostasis, such that reduced SOC activity exaggerates muscle fatigue under conditions of intensive exercise.
This is a preview of subscription content, access via your institution
Relevant articles
Open Access articles citing this article.
-
Calsequestrin: a well-known but curious protein in skeletal muscle
Experimental & Molecular Medicine Open Access 07 December 2020
-
Calcium entry units (CEUs): perspectives in skeletal muscle function and disease
Journal of Muscle Research and Cell Motility Open Access 18 August 2020
-
MG53 suppresses interferon-β and inflammation via regulation of ryanodine receptor-mediated intracellular calcium signaling
Nature Communications Open Access 17 July 2020
Access options
Subscribe to this journal
Receive 12 print issues and online access
$209.00 per year
only $17.42 per issue
Rent or buy this article
Get just this article for as long as you need it
$39.95
Prices may be subject to local taxes which are calculated during checkout





References
Putney, J. W. Jr Cell Calcium 21, 257–261 (1997).
Hoth, M. & Penner, R. Nature 355, 353–355 (1992).
Berridge, M. J. Neuron 21, 13–26 (1998).
Patterson, R. L., van Rossum, D. B. & Gill, D. L. Cell 98, 487–499 (1999).
Kiselyov, K. I. et al. Mol. Cell 6, 421–431 (2000).
Takeshima, H. et al. Biochem. J. 331, 317–322 (1998).
Nishi, M. et al. J. Cell Biol. 147, 1473–1480 (1999).
Nagaraj, R. Y. et al. Physiol. Genomics 4, 43–49 (2000).
Franzini-Armstrong, C. & Jorgensen, A. O. Ann. Rev. Physiol. 56, 509–534 (1994).
Johnston, P. A. Jahn, R. & Sudhof, T. C. J. Biol. Chem. 264, 1265–1273 (1989).
Yang, D. et al. J. Biol. Chem. 276, 40210–40214 (2001).
Doi, S., Damron, D. S., Horibe, M. & Murray, P. A. Am. J. Physiol. 278, L118–L130 (2000).
Kurebayashi, N. & Ogawa, Y. J. Physiol. 533, 185–199 (2001).
Thastrup, O., Cullen, P. J., Drobak, B. K., Hanley, M. R. & Dawson, A. P. Proc. Natl Acad. Sci. USA 87, 2466–2470 (1990).
Merritt, J. E. et al. Biochem. J. 271, 515–522 (1990).
Fasolato, C., Hoth, M. & Penner, R. Pflugers Arch. 423, 225–231 (1993).
Takeshima, H. et al. Nature 369, 556–559 (1994).
Takeshima, H. et al. J. Biol. Chem. 271, 19649–19652 (1996).
Ikemoto, T. et al. J. Physiol. 501, 305–312 (1997).
Takeshima, H. et al. Nature 339, 439–445 (1989).
Lai, F. A., Erickson, H. P., Rousseau, E., Liu, Q. Y. & Meissner, G. Nature 331, 315–319 (1988).
Leung, Y. M., Kwan, C. Y. & Loh, T. T. Biochem. Pharmacol. 51, 605–612 (1996).
Prakriya, M. & Lewis, R. S. J. Physiol. 536, 3–19 (2001).
Cota, G. & Stefani, E. J. Gen. Physiol. 94, 937–951 (1989).
Nakai, J. et al. Nature 380, 72–75 (1996).
Rios, E., Ma, J. & Gonzalez, A. J. Muscle Res. Cell Motil. 12, 127–135 (1991).
Schneider, M. F. Annu. Rev. Physiol. 56, 463–484 (1994).
Pan, Z., Damron, D., Nieminen, A. L., Bhat, M. B. & Ma, J. J. Biol. Chem. 275, 19978–19984 (2000).
Acknowledgements
We thank E. Rios, E. Lakatta, N. Partridge, J. Parness and C. Sciortino for helpful comments on the manuscript. We also appreciate the generous help and support from M. Bhat and D. Damron for the Fura-2 calcium studies. This work was supported by grants from the National Institutes of Health and the American Heart Association.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The authors declare no competing financial interests.
Rights and permissions
About this article
Cite this article
Pan, Z., Yang, D., Nagaraj, R. et al. Dysfunction of store-operated calcium channel in muscle cells lacking mg29. Nat Cell Biol 4, 379–383 (2002). https://doi.org/10.1038/ncb788
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/ncb788
This article is cited by
-
Calcium entry units (CEUs): perspectives in skeletal muscle function and disease
Journal of Muscle Research and Cell Motility (2021)
-
Calsequestrin: a well-known but curious protein in skeletal muscle
Experimental & Molecular Medicine (2020)
-
MG53 suppresses interferon-β and inflammation via regulation of ryanodine receptor-mediated intracellular calcium signaling
Nature Communications (2020)
-
Calcium and CaSR/IP3R in prostate cancer development
Cell & Bioscience (2018)
-
A focus on extracellular Ca2+ entry into skeletal muscle
Experimental & Molecular Medicine (2017)