2dwy

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[[Image:2dwy.gif|left|200px]]
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{{Structure
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|RELATEDENTRY=[[2dwx|2DWX]]
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2dwy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dwy OCA], [http://www.ebi.ac.uk/pdbsum/2dwy PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2dwy RCSB]</span>
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'''Crystal Structure Analysis of GGA1-GAE'''
'''Crystal Structure Analysis of GGA1-GAE'''
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[[Category: Wakatsuki, S.]]
[[Category: Wakatsuki, S.]]
[[Category: Yamada, Y.]]
[[Category: Yamada, Y.]]
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[[Category: adaptin]]
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[[Category: Adaptin]]
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[[Category: ig fold]]
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[[Category: Ig fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 01:32:37 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:40:42 2008''
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Revision as of 22:32, 3 May 2008

Image:2dwy.gif

Template:STRUCTURE 2dwy

Crystal Structure Analysis of GGA1-GAE


Overview

Golgi-localizing, gamma-adaptin ear domain homology, ADP ribosylation factor-binding (GGA) proteins and the adaptor protein (AP) complex, AP-1, are involved in membrane traffic between the trans Golgi network and the endosomes. The gamma-adaptin ear (GAE) domain of GGAs and the gamma1 ear domain of AP-1 interact with an acidic phenylalanine motif found in accessory proteins. The GAE domain of GGA1 (GGA1-GAE) interacts with a WNSF-containing peptide derived from its own hinge region, although the peptide sequence deviates from the standard acidic phenylalanine motif. We report here the structure of GGA1-GAE in complex with the GGA1 hinge peptide, which revealed that the two aromatic side chains of the WNSF sequence fit into a hydrophobic groove formed by aliphatic portions of the side chains of conserved arginine and lysine residues of GGA1-GAE, in a similar manner to the interaction between GGA-GAEs and acidic phenylalanine sequences from the accessory proteins. Fluorescence quenching experiments indicate that the GGA1 hinge region binds to GGA1-GAE and competes with accessory proteins for binding. Taken together with the previous observation that gamma1 ear binds to the GGA1 hinge region, the interaction between the hinge region and the GAE domain underlies the autoregulation of GGA function in clathrin-mediated trafficking through competing with the accessory proteins and the AP-1 complex.

About this Structure

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

Reference

Molecular basis for autoregulatory interaction between GAE domain and hinge region of GGA1., Inoue M, Shiba T, Ihara K, Yamada Y, Hirano S, Kamikubo H, Kataoka M, Kawasaki M, Kato R, Nakayama K, Wakatsuki S, Traffic. 2007 Jul;8(7):904-13. Epub 2007 May 16. PMID:17506864 Page seeded by OCA on Sun May 4 01:32:37 2008

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