The Phosphoinositide Kinase PIP5K That Produces the Versatile Signaling Phospholipid PI4,5P2
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- Kanaho Yasunori
- Department of Physiological Chemistry, Graduate School of Comprehensive Human Sciences, Institute of Basic Medical Sciences, University of Tsukuba
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- Kobayashi-Nakano Akiko
- Department of Physiological Chemistry, Graduate School of Comprehensive Human Sciences, Institute of Basic Medical Sciences, University of Tsukuba
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- Yokozeki Takeaki
- Department of Physiological Chemistry, Graduate School of Comprehensive Human Sciences, Institute of Basic Medical Sciences, University of Tsukuba
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Abstract
The phosphoinositide kinase, phosphatidylinositol 4-phosphate 5-kinase (PIP5K), produces the versatile phospholipid phosphatidylinositol 4,5-bisphosphate (PI4,5P2), through which PIP5K plays crucial roles in a wide variety of cell functions. So far, three PIP5K isozymes and splicing variants have been identified. We speculate that each PIP5K isozyme or splicing variant is activated in a tempo-spatially different manner, due to the existence of activators or recruiters specific to each isozyme: this tempo-spatially different activation of PIP5K produces PI4,5P2 at different compartments of the cell at different times, which phenomenon may be responsible for the apparent multifunction of PI4,5P2/PIP5K. Accumulating evidence supports this notion that each PIP5K isozyme is activated by its specific activator and plays a crucial role in a unique cell function. In this article, we describe recent advances regarding the PIP5K isozyme-specific activation mechanisms and physiological functions.
Journal
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- Biological and Pharmaceutical Bulletin
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Biological and Pharmaceutical Bulletin 30 (9), 1605-1609, 2007
The Pharmaceutical Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204627186688
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- NII Article ID
- 110006380236
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- NII Book ID
- AA10885497
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- ISSN
- 13475215
- 09186158
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- NDL BIB ID
- 8877647
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed