2uxa: Difference between revisions

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[[Image:2uxa.gif|left|200px]]
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[[Image:2uxa.png|left|200px]]


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{{STRUCTURE_2uxa|  PDB=2uxa  |  SCENE=  }}  
{{STRUCTURE_2uxa|  PDB=2uxa  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF THE GLUR2-FLIP LIGAND BINDING DOMAIN, R/G UNEDITED.'''
===CRYSTAL STRUCTURE OF THE GLUR2-FLIP LIGAND BINDING DOMAIN, R/G UNEDITED.===




==Overview==
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The subunit composition determines AMPA receptor (AMPA-R) function and trafficking. Mechanisms underlying channel assembly are thus central to the efficacy and plasticity of glutamatergic synapses. We previously showed that RNA editing at the Q/R site of the GluR2 subunit contributes to the assembly of AMPA-R heteromers by attenuating formation of GluR2 homotetramers. Here we report that this function of the Q/R site depends on subunit contacts between adjacent ligand binding domains (LBDs). Changes of LBD interface contacts alter GluR2 assembly properties, forward traffic, and expression at synapses. Interestingly, developmentally regulated RNA editing within the LBD (at the R/G site) produces analogous effects. Our data reveal that editing to glycine reduces the self-assembly competence of this critical subunit and slows GluR2 maturation in the endoplasmic reticulum (ER). Therefore, RNA editing sites, located at strategic subunit interfaces, shape AMPA-R assembly and trafficking in a developmentally regulated manner.
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{{ABSTRACT_PUBMED_16815334}}


==About this Structure==
==About this Structure==
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[[Category: Transmembrane]]
[[Category: Transmembrane]]
[[Category: Transport]]
[[Category: Transport]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 17:43:38 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 23:39:20 2008''

Revision as of 23:39, 27 July 2008

File:2uxa.png

Template:STRUCTURE 2uxa

CRYSTAL STRUCTURE OF THE GLUR2-FLIP LIGAND BINDING DOMAIN, R/G UNEDITED.CRYSTAL STRUCTURE OF THE GLUR2-FLIP LIGAND BINDING DOMAIN, R/G UNEDITED.

Template:ABSTRACT PUBMED 16815334

About this StructureAbout this Structure

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

ReferenceReference

Developmentally regulated, combinatorial RNA processing modulates AMPA receptor biogenesis., Greger IH, Akamine P, Khatri L, Ziff EB, Neuron. 2006 Jul 6;51(1):85-97. PMID:16815334

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