論文 - 詳細
| RRC ID | 53603 |
|---|---|
| 著者 | Awai K, Ohta H, Sato N. |
| タイトル | Oxygenic photosynthesis without galactolipids. |
| ジャーナル | Proc Natl Acad Sci U S A |
| Abstract |
The thylakoid membranes of oxygenic photosynthetic organisms are dominated by the galactolipids monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG). In cyanobacteria, MGDG is synthesized via monoglucosyldiacylglycerol (GlcDG). However, the putative epimerase involved in the conversion of GlcDG to MGDG has not been identified. Here we report the identification of the gene for the glucolipid epimerase (mgdE) by comparative genomic analysis. Knockout mutants of mgdE in Synechocystis sp. PCC 6803 lacked both MGDG and DGDG and accumulated GlcDG. The mutants did possess thylakoid membranes and showed normal maximal photosynthetic activity, albeit with reduced utilization of light energy. These results cast doubt on the long-standing belief that oxygenic photosynthesis is absolutely dependent on galactolipids. |
| 巻・号 | 111(37) |
| ページ | 13571-5 |
| 公開日 | 2014-9-16 |
| DOI | 10.1073/pnas.1403708111 |
| PII | 1403708111 |
| PMID | 25197079 |
| PMC | PMC4169966 |
| MeSH | Escherichia coli / genetics Galactolipids / biosynthesis Galactolipids / chemistry Galactolipids / metabolism* Mutation / genetics Oxygen / metabolism* Photosynthesis* Phylogeny Racemases and Epimerases / metabolism Synechocystis / genetics Synechocystis / metabolism* Thylakoids / metabolism Thylakoids / ultrastructure |
| IF | 9.412 |
| 引用数 | 37 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 15 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 原核生物(大腸菌) | |