The intracellular localisation and mobility of Type Igamma phosphatidylinositol 4P 5-kinase splice variants.

The intracellular localisation and mobility of Type Igamma phosphatidylinositol 4P 5-kinase splice variants.
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DOI:
10.1016/j.febslet.2006.11.052
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发表时间:
2006-12-22
期刊:
影响因子:
3.5
通讯作者:
Irvine, Robin F.
Irvine, Robin F.
中科院分区:
生物学3区
文献类型:
--
作者:
Giudici, Maria-Luisa;Lee, Koon;Lim, Rongxuan;Irvine, Robin F.

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There are three known splice variants of Type Iγ phosphatidylinositol 4-phosphate 5-kinase (PIPkin Iγ): PIPkins Iγ87, Iγ90, and the most recently cloned (Giudici, M.L., Emson, P.C. and Irvine, R.F. (2004) A novel neuronal-specific splice variant of Type I phosphatidylinositol 4-phosphate 5-kinase isoform gamma. Biochem. J. 379, 489–496) PIPkin IγC (here called PIPkin Iγ93). Here, we have explored the subcellular localisation and mobility of Type I PIPkins in transfected cells by confocal microscopy and flourescence recovery after photobleaching. The unique behaviour shown by PIPkin Iγ93 is consistent with its suggested distinct function. Moreover, the markedly different localisation and mobility of active versus inactive PIPkin Iγ93 provide insights into the factors that dictate cellular targeting of Type Iγ PIPkins.
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