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2rlo

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{{STRUCTURE_2rlo| PDB=2rlo | SCENE= }}
{{STRUCTURE_2rlo| PDB=2rlo | SCENE= }}
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'''Split PH domain of PI3-kinase enhancer'''
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===Split PH domain of PI3-kinase enhancer===
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==Overview==
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Cytoplasm-nucleus shuttling of phosphoinositol 3-kinase enhancer (PIKE) is known to correlate directly with its cellular functions. However, the molecular mechanism governing this shuttling is not known. In this work, we demonstrate that PIKE is a new member of split pleckstrin homology (PH) domain-containing proteins. The structure solved in this work reveals that the PIKE PH domain is split into halves by a positively charged nuclear localization sequence. The PIKE PH domain binds to the head groups of di- and triphosphoinositides with similar affinities. Lipid membrane binding of the PIKE PH domain is further enhanced by the positively charged nuclear localization sequence, which is juxtaposed to the phosphoinositide head group-binding pocket of the domain. We demonstrate that the cytoplasmic-nuclear shuttling of PIKE is dynamically regulated by the balancing actions of the lipid-binding property of both the split PH domain and the nuclear targeting function of its nuclear localization sequence.
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{{ABSTRACT_PUBMED_18371979}}
==About this Structure==
==About this Structure==
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2RLO is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RLO OCA].
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2RLO is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RLO OCA].
==Reference==
==Reference==
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[[Category: Zinc]]
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[[Category: Zinc-finger]]
[[Category: Zinc-finger]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 06:18:59 2008''

Revision as of 03:19, 29 July 2008

Image:2rlo.png

Template:STRUCTURE 2rlo

Split PH domain of PI3-kinase enhancer

Template:ABSTRACT PUBMED 18371979

About this Structure

2RLO is a Single protein structure of sequence from Homo sapiens. Full experimental information is available from OCA.

Reference

Split pleckstrin homology domain-mediated cytoplasmic-nuclear localization of PI3-kinase enhancer GTPase., Yan J, Wen W, Chan LN, Zhang M, J Mol Biol. 2008 Apr 25;378(2):425-35. Epub 2008 Mar 4. PMID:18371979

Page seeded by OCA on Tue Jul 29 06:18:59 2008

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