2011 Fiscal Year Final Research Report
p97ATPase se洋ediated membrane fusion in the ER and Golgi
| Project/Area Number |
21370091
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Cell biology
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| Research Institution | Kyushu University |
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Principal Investigator |
KONDO Hisao 九州大学, 医学研究院, 教授研 (20205561)
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| Co-Investigator(Kenkyū-buntansha) |
TOTSUKAWA Go 九州大学, 大学院・医学研究院, 助教 (90399684)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ゴルジ体・小胞体 / 膜融合 |
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| Research Abstract |
Two distinct p97 membrane fusion pathways are required for Golgi biogenesis : the p97/p47 and p97/p37 pathwVCIPlssIP135 is necessary for both pathways, while its deubiquitinating activity is required only for the p97/p47 pathway. We have now identified a nVCIPlssIP135傭inding protein, WAC. WAC localizes to the Golgi as well as the nucleus. In Golgi membranes, WAC is involved in a complex contaiVCIPlssIP135 and p97. WAC directly bindVCIPlssIP135 and increases its deubiquitinating activity. siRNA experiments revealed that WAC is required for Golgi biogenesis. In an in vitro Golgi reformation assay, WAC was necessary only for p97/p47洋ediated Gre assemblyembly, but not for p97/p37洋ediated reassembly.
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