2ego
From Proteopedia
| Line 1: | Line 1: | ||
| - | [[Image:2ego.jpg|left|200px]] | + | [[Image:2ego.jpg|left|200px]] |
| - | + | ||
| - | '''Crystal Structure of Tamalin PDZ Domain''' | + | {{Structure |
| + | |PDB= 2ego |SIZE=350|CAPTION= <scene name='initialview01'>2ego</scene>, resolution 1.80Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of Tamalin PDZ Domain''' | ||
| + | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
| - | 2EGO is a [ | + | 2EGO is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EGO OCA]. |
==Reference== | ==Reference== | ||
| - | Crystal structures of autoinhibitory PDZ domain of Tamalin: implications for metabotropic glutamate receptor trafficking regulation., Sugi T, Oyama T, Muto T, Nakanishi S, Morikawa K, Jingami H, EMBO J. 2007 Apr 18;26(8):2192-205. Epub 2007 Mar 29. PMID:[http:// | + | Crystal structures of autoinhibitory PDZ domain of Tamalin: implications for metabotropic glutamate receptor trafficking regulation., Sugi T, Oyama T, Muto T, Nakanishi S, Morikawa K, Jingami H, EMBO J. 2007 Apr 18;26(8):2192-205. Epub 2007 Mar 29. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17396155 17396155] |
[[Category: Rattus norvegicus]] | [[Category: Rattus norvegicus]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| Line 23: | Line 32: | ||
[[Category: protein binding]] | [[Category: protein binding]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:39:52 2008'' |
Revision as of 14:39, 20 March 2008
| |||||||
| , resolution 1.80Å | |||||||
|---|---|---|---|---|---|---|---|
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Tamalin PDZ Domain
Overview
Metabotropic glutamate receptors (mGluRs) function as neuronal G-protein-coupled receptors and this requires efficient membrane targeting through associations with cytoplasmic proteins. However, the molecular mechanism regulating mGluR cell-surface trafficking remains unknown. We report here that mGluR trafficking is controlled by the autoregulatory assembly of a scaffold protein Tamalin. In the absence of mGluR, Tamalin self-assembles into autoinhibited conformations, through its PDZ domain and C-terminal intrinsic ligand motif. X-ray crystallographic analyses visualized integral parts of the oligomeric self-assemblies of Tamalin, which require not only the novel hydrophobic dimerization interface but also canonical and noncanonical PDZ/ligand autoinhibitory interactions. The mGluR cytoplasmic region can competitively bind to Tamalin at a higher concentration, disrupting weak inhibitory interactions. The atomic view of mGluR association suggests that this rearrangement is dominated by electrostatic attraction and repulsion. We also observed in mammalian cells that the association liberates the intrinsic ligand toward a motor protein receptor, thereby facilitating mGluR cell-surface trafficking. Our study suggests a novel regulatory mechanism of the PDZ domain, by which Tamalin switches between the trafficking-inhibited and -active forms depending on mGluR association.
About this Structure
2EGO is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.
Reference
Crystal structures of autoinhibitory PDZ domain of Tamalin: implications for metabotropic glutamate receptor trafficking regulation., Sugi T, Oyama T, Muto T, Nakanishi S, Morikawa K, Jingami H, EMBO J. 2007 Apr 18;26(8):2192-205. Epub 2007 Mar 29. PMID:17396155
Page seeded by OCA on Thu Mar 20 16:39:52 2008
