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Regulation of phosphoinositide signaling by the inositol polyphosphate 5‐phosphatases

Regulation of phosphoinositide signaling by the inositol polyphosphate 5‐phosphatases Phosphoinositide signaling molecules control cellular growth, proliferation and differentiation, intracellular vesicle trafficking, and cytoskeletal rearrangement. The inositol polyphosphate 5‐phosphatase family remove the D‐5 position phosphate from PtdIns(3,4,5)P3, PtdIns(4,5)P2 and PtdIns(3,5)P2 forming PtdIns(3,4)P2, PtdIns(4)P and PtdIns(3)P respectively. This enzyme family, comprising ten mammalian members, exhibit seemingly non‐redundant functions including the regulation of synaptic vesicle recycling, hematopoietic cell function and insulin signaling. Here we highlight recently established insights into the functions of two well characterized 5‐phosphatases OCRL and SHIP2, which have been the subject of extensive functional studies, and the characterization of recently identified members, SKIP and PIPP, in order to highlight the diverse and complex functions of this enzyme family. iubmb Life, 58: 451 ‐ 456, 2006 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png IUBMB Life Wiley

Regulation of phosphoinositide signaling by the inositol polyphosphate 5‐phosphatases

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References (29)

Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
Copyright © 2006 International Union of Biochemistry and Molecular Biology
ISSN
1521-6543
eISSN
1521-6551
DOI
10.1080/15216540600871159
pmid
16916781
Publisher site
See Article on Publisher Site

Abstract

Phosphoinositide signaling molecules control cellular growth, proliferation and differentiation, intracellular vesicle trafficking, and cytoskeletal rearrangement. The inositol polyphosphate 5‐phosphatase family remove the D‐5 position phosphate from PtdIns(3,4,5)P3, PtdIns(4,5)P2 and PtdIns(3,5)P2 forming PtdIns(3,4)P2, PtdIns(4)P and PtdIns(3)P respectively. This enzyme family, comprising ten mammalian members, exhibit seemingly non‐redundant functions including the regulation of synaptic vesicle recycling, hematopoietic cell function and insulin signaling. Here we highlight recently established insights into the functions of two well characterized 5‐phosphatases OCRL and SHIP2, which have been the subject of extensive functional studies, and the characterization of recently identified members, SKIP and PIPP, in order to highlight the diverse and complex functions of this enzyme family. iubmb Life, 58: 451 ‐ 456, 2006

Journal

IUBMB LifeWiley

Published: Aug 1, 2006

Keywords: Signaling; PI3‐kinase; phosphoinositides; 5‐phosphatases

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