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モトハシ タケシ
MOTOHASHI TAKESHI
本橋 健 所属 京都産業大学 生命科学部 先端生命科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2010/10 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | CcdA Is a Thylakoid Membrane Protein Required for the Transfer of Reducing Equivalents from Stroma to Thylakoid Lumen in the Higher Plant Chloroplast |
| 執筆形態 | その他 |
| 掲載誌名 | ANTIOXIDANTS & REDOX SIGNALING |
| 出版社・発行元 | MARY ANN LIEBERT, INC |
| 巻・号・頁 | 13(8),pp.1169-1176 |
| 著者・共著者 | Ken Motohashi,Toru Hisabori |
| 概要 | In order to transfer reducing equivalents into the thylakoid lumen, a specific thylakoid membrane transfer system is suggested that mediates the disulfide bond reduction of proteins in the thylakoid lumen of higher plant chloroplasts. In this system, although stromal thioredoxin can supply the reducing equivalents to a thioredoxin-like protein HCF164 in the thylakoid lumen, a mediator protein for electron transfer in the thylakoid membranes is proposed to be required to link the two suborganellar compartments. CcdA is a candidate protein as a component for this transfer system since CcdA- and HCF164-deficient mutants in Arabidopsis thaliana show the same phenotype. We now show that CcdA is localized in the thylakoid membrane and that its redox state, as well as that of HCF164, is modulated in thylakoids by stromal m-type thioredoxin. Our results strongly suggest that CcdA may act as a mediator in thylakoid membranes by transferring reducing equivalents from the stromal to the lumenal side of the thylakoid membrane in chloroplasts. Antioxid. Redox Signal. 13, 1169-1176. |
| DOI | 10.1089/ars.2010.3138 |
| ISSN | 1523-0864/1557-7716 |