2d57

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[[Image:2d57.gif|left|200px]]
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{{STRUCTURE_2d57| PDB=2d57 | SCENE= }}
{{STRUCTURE_2d57| PDB=2d57 | SCENE= }}
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'''Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3.2 a resolution by electron crystallography'''
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===Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3.2 a resolution by electron crystallography===
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==Overview==
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Aquaporin-4 (AQP4) is the predominant water channel in the mammalian brain and an important drug target for treatment of cerebral edema, bipolar disorder and mesial temporal lobe epilepsy. We determined the AQP4 structure by electron crystallography of double-layered, two-dimensional (2D) crystals. The structure allows us to discuss how the expression ratio between the long and short AQP4 splicing variant can determine the size of in vivo orthogonal arrays. Furthermore, AQP4 contains a short 3(10) helix in an extracellular loop, which mediates weak but specific interactions between AQP4 molecules in adjoining membranes. This finding suggests a previously unexpected role for AQP4 in cell adhesion. This notion was corroborated by expression of AQP4 in L-cells, which resulted in clustering of the cells. Our AQP4 structure thus enables us to propose models for the size regulation of orthogonal arrays and channel-mediated cell adhesion.
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The line below this paragraph, {{ABSTRACT_PUBMED_16325200}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 16325200 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16325200}}
==About this Structure==
==About this Structure==
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[[Category: Water channel]]
[[Category: Water channel]]
[[Category: Water transport]]
[[Category: Water transport]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 23:43:26 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 03:13:53 2008''

Revision as of 00:13, 28 July 2008

Image:2d57.png

Template:STRUCTURE 2d57

Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3.2 a resolution by electron crystallography

Template:ABSTRACT PUBMED 16325200

About this Structure

2D57 is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.

Reference

Implications of the aquaporin-4 structure on array formation and cell adhesion., Hiroaki Y, Tani K, Kamegawa A, Gyobu N, Nishikawa K, Suzuki H, Walz T, Sasaki S, Mitsuoka K, Kimura K, Mizoguchi A, Fujiyoshi Y, J Mol Biol. 2006 Jan 27;355(4):628-39. Epub 2005 Nov 17. PMID:16325200

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