期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 422, 期 4, 页码 615-620出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2012.05.037
关键词
Store-operated calcium entry; STIM1; Surf4
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Japan Science and Technology Agency and Core Research for Evolutional Science and Technology
- Osaka University
- Grants-in-Aid for Scientific Research [23651195, 21229007] Funding Source: KAKEN
Store-operated Ca2+ entry (SOCE) is crucial for various physiological responses in immune cells. Although it is known that STIM1 relocates into discrete puncta juxtaposed to the plasma membrane to initiate SOCE, the machinery modulating the function of STIM1 remains unclear. We explored to find its modulators using affinity purification for STIM1-binding proteins and identified surfeit locus protein 4 (Surf4). Surf4 associated with STIM1 in the endoplasmic reticulum. Deletion of Surf4 in DT40 B cells resulted in marked increase of SOCE and facilitation of STIM1 clustering upon store-depletion. These findings suggest the modulatory function of Surf4 for STIM1-mediated SOCE. (C) 2012 Elsevier Inc. All rights reserved.
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