Self-oligomerization of the CARD domain prevents complex formation in the CARMA1 signalosome

  • Authors:
    • Jin Hee Park
    • Ju Young Bae
    • Hyun Ho Park
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  • Published online on: March 19, 2013     https://doi.org/10.3892/ijmm.2013.1307
  • Pages: 1280-1287
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Abstract

The CARMA1 signalosome composed of CARMA1, BCL10 and MALT1 plays a pivotal role in antigen receptor-mediated lymphocyte activation via the NF-κB pathway. For assembly of the CARMA1 signalosome, BCL10 functions as an adaptor protein that interacts with CARMA1 via the CARD-CARD interaction and with MALT1 via interaction between the C-terminal Ser/Thr-rich region of BCL10 and the first Ig domain of MALT1. Despite the biological importance of the CARMA1 signalosome, structural and biochemical studies have been limited as CARD-containing proteins are prone to aggregation under physiological conditions. In the present study, we successfully purified and characterized CARMA1 CARD and BCL10 CARD and showed that both CARMA1 CARD and BCL10 CARD easily self-oligomerized under physiological conditions. This self-oligomerization of the CARD domain prevents complex formation in the CARMA1 signalosome in vitro. Finally, we propose an interaction mode between CARMA1 CARD and BCL10 CARD based on a structure-based modeling study.
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May 2013
Volume 31 Issue 5

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Park JH, Bae JY and Park HH: Self-oligomerization of the CARD domain prevents complex formation in the CARMA1 signalosome. Int J Mol Med 31: 1280-1287, 2013
APA
Park, J.H., Bae, J.Y., & Park, H.H. (2013). Self-oligomerization of the CARD domain prevents complex formation in the CARMA1 signalosome. International Journal of Molecular Medicine, 31, 1280-1287. https://doi.org/10.3892/ijmm.2013.1307
MLA
Park, J. H., Bae, J. Y., Park, H. H."Self-oligomerization of the CARD domain prevents complex formation in the CARMA1 signalosome". International Journal of Molecular Medicine 31.5 (2013): 1280-1287.
Chicago
Park, J. H., Bae, J. Y., Park, H. H."Self-oligomerization of the CARD domain prevents complex formation in the CARMA1 signalosome". International Journal of Molecular Medicine 31, no. 5 (2013): 1280-1287. https://doi.org/10.3892/ijmm.2013.1307