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エンドウ トシヤ
ENDO TOSHIYA
遠藤 斗志也 所属 京都産業大学 生命科学部 先端生命科学科 職種 客員教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2006/08 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Identification of Tam41 maintaining integrity of the TIM23 protein translocator complex in mitochondria |
| 執筆形態 | その他 |
| 掲載誌名 | JOURNAL OF CELL BIOLOGY |
| 出版社・発行元 | ROCKEFELLER UNIV PRESS |
| 巻・号・頁 | 174(5),pp.631-637 |
| 著者・共著者 | Yasushi Tamura,Yoshihiro Harada,Koji Yamano,Kazuaki Watanabe,Daigo Ishikawa,Chie Ohshima,Shuh-ichi Nishikawa,Hayashi Yamamoto,Toshiya Endo |
| 概要 | Newly synthesized mitochondrial proteins are imported into mitochondria with the aid of protein translocator complexes in the outer and inner mitochondrial membranes. We report the identification of yeast Tam41, a new member of mitochondrial protein translocator systems. Tam41 is a peripheral inner mitochondrial membrane protein facing the matrix. Disruption of the TAM41 gene led to temperature-sensitive growth of yeast cells and resulted in defects in protein import via the TIM23 translocator complex at elevated temperature both in vivo and in vitro. Although Tam41 is not a constituent of the TIM23 complex, depletion of Tam41 led to a decreased molecular size of the TIM23 complex and partial aggregation of Pam18 and - 16. Import of Pam16 into mitochondria without Tam41 was retarded, and the imported Pam16 formed aggregates in vitro. These results suggest that Tam41 facilitates mitochondrial protein import by maintaining the functional integrity of the TIM23 protein translocator complex from the matrix side of the inner membrane. |
| DOI | 10.1083/jcb.200603087 |
| ISSN | 0021-9525 |