Characterization of subcellular localization and Ca2+ modulation of calsenilin/DREAM/KChIP3
2008
Earlier reports found that calsenilin is a transcriptional repressor or a subunit of plasma membrane channel, and indicated that calsenilin was present in the nucleus or plasma membrane. Immunohistochemical and subcellular fractionation analysis, however, revealed that calsenilin/DREAM/KChlP3 was distributed throughout the cytoplasm of SK-N-BE2(C), Jurkat, and HeLa cells. In addition, the expression of calsenilin suppressed the ATP-induced increase in intracellular Ca 2+ concentrations. By increase in intracellular calcium concentration, calsenilin was translocated into the nucleus.
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