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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 | 2007/07 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Structural basis of functional cooperation of Tim15/Zim17 with yeast mitochondrial Hsp70 |
| 執筆形態 | その他 |
| 掲載誌名 | EMBO REPORTS |
| 出版社・発行元 | WILEY-BLACKWELL |
| 巻・号・頁 | 8(7),pp.664-670 |
| 著者・共著者 | Takaki Momose,Chie Ohshima,Masahiro Maeda,Toshiya Endo |
| 概要 | Mitochondrial heat-shock protein 70 (mtHsp70) and its partner proteins drive protein import into the matrix. Tim15/Zim17/Hep1 is a mtHsp70 partner protein on the matrix side of the inner mitochondrial membrane. We determined the nuclear magnetic resonance (NMR) structure of the core domain of Tim15. On the basis of the NMR structure, we created Tim15 mutants and tested their ability to complement the functional defects of Tim15 depletion and to suppress self-aggregation of mtHsp70 in vivo. A pair of basic residues, Arg 106 and His 107, conserved Asp 111 and flexible loop 133-137, and were important (Arg 106-His 107 pair and Asp 111) or partly important (the loop 133-137) for yeast cell growth, mitochondrial protein import and the suppression of mtHsp70 aggregation. Therefore, the function of Tim15 in yeast cell growth is well correlated with its ability to suppress mtHsp70 aggregation, although it is still unknown whether inhibition of mtHsp70 aggregation is the primary function of Tim15. |
| DOI | 10.1038/sj.embor.7400990 |
| ISSN | 1469-221X/1469-3178 |