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Author | Kim, Hangun | en_US |
Author | Han, Jeong-Ran | en_US |
Author | Park, Jaejun | en_US |
Author | Oh, Minsoo | en_US |
Author | James, Sarah E. | en_US |
Author | Chang, Sunghoe | en_US |
Author | Lu, Qun | en_US |
Author | Lee, Kwang Youl | en_US |
Author | Ki, Hyunkyoung | en_US |
Author | Song, Woo-Joo | en_US |
Author | Kwonseop, Kim | en_US |
Date Accessioned | 2011-04-13T20:59:26Z | en_US |
Date Accessioned | 2011-05-17T13:03:51Z | |
Date Available | 2011-04-13T20:59:26Z | en_US |
Date Available | 2011-05-17T13:03:51Z | |
Date of Issue | 2008-01-11 | en_US |
Identifier (Citation) | Journal of Biological Chemistry; 283:2 p. 977-987 | en_US |
Identifier (URI) | http://hdl.handle.net/10342/3320 | en_US |
Description | delta-Catenin was first identified through its interaction with Presenilin-1 and has been implicated in the regulation of dendrogenesis and cognitive function. However, the molecular mechanisms by which delta-catenin promotes dendritic morphogenesis were unclear. In this study, we demonstrated delta-catenin interaction with p190RhoGEF, and the importance of Akt1-mediated phosphorylation at Thr-454 residue of delta -catenin in this interaction. We have also found that delta-catenin overexpression decreased the binding between p190RhoGEF and RhoA, and significantly lowered the levels of GTP-RhoA but not those of GTP-Rac1 and -Cdc42. delta-Catenin T454A, a defective form in p190RhoGEF binding, did not decrease the binding between p190RhoGEF and RhoA. delta-Catenin T454A also did not lower GTP-RhoA levels and failed to induce dendrite-like process formation in NIH 3T3 fibroblasts. Furthermore, delta-catenin T454A significantly reduced the length and number of mature mushroom shaped spines in primary hippocampal neurons. These results highlight signaling events in the regulation of delta-catenin-induced dendrogenesis and spine morphogenesis. Originally published Journal of Biological Chemistry, Vol. 283, No. 2, Jan 2008 | en_US |
Language | en_US | en_US |
Publisher | East Carolina University | en_US |
Related URI | http://www.jbc.org/content/283/2/977.long | en_US |
Rights | Author notified of opt-out rights by Cammie Jennings prior to upload of this article. | en_US |
Subject | [Delta]-catenin | en_US |
Subject | Phosphorylation | en_US |
Subject | Dendritic morphogenesis | en_US |
Subject | δ-catenin | |
Title | Delta-Catenin Induced Dendritic Morphogenesis: An Essential Role of p190RhoGEF Interaction through Akt1 Mediated Phosphorylation | en_US |
Type | Article | en_US |
Identifier (PMID) | PMC2265781 | en_US |
Identifier (DOI) | 10.1074/jbc.M707158200 | |
Journal Name | Journal of Biological Chemistry | |
Journal Volume | 283 | |
Journal Issue | 2 | |
Article Pages | 977-987 |