論文 - 詳細
| RRC ID | 69307 |
|---|---|
| 著者 | Streckaite S, Llansola-Portoles MJ, Pascal AA, Ilioaia C, Gall A, Seki S, Fujii R, Robert B. |
| タイトル | Pigment structure in the light-harvesting protein of the siphonous green alga Codium fragile. |
| ジャーナル | Biochim Biophys Acta Bioenerg |
| Abstract |
The siphonaxanthin-siphonein-chlorophyll-a/b-binding protein (SCP), a trimeric light-harvesting complex isolated from photosystem II of the siphonous green alga Codium fragile, binds the carotenoid siphonaxanthin (Sx) and/or its ester siphonein in place of lutein, in addition to chlorophylls a/b and neoxanthin. SCP exhibits a higher content of chlorophyll b (Chl-b) than its counterpart in green plants, light-harvesting complex II (LHCII), increasing the relative absorption of blue-green light for photosynthesis. Using low temperature absorption and resonance Raman spectroscopies, we reveal the presence of two non-equivalent Sx molecules in SCP, and assign their absorption peaks at 501 and 535 nm. The red-absorbing Sx population exhibits a significant distortion that is reminiscent of lutein 2 in trimeric LHCII. Unexpected enhancement of the Raman modes of Chls-b in SCP allows an unequivocal description of seven to nine non-equivalent Chls-b, and six distinct Chl-a populations in this protein. |
| 巻・号 | 1862(5) |
| ページ | 148384 |
| 公開日 | 2021-5-1 |
| DOI | 10.1016/j.bbabio.2021.148384 |
| PII | S0005-2728(21)00017-7 |
| PMID | 33545114 |
| MeSH | Chlorophyll / metabolism* Chlorophyll A / metabolism* Chlorophyta / metabolism* Light-Harvesting Protein Complexes / metabolism* Photosynthesis Photosystem II Protein Complex / metabolism* Pigments, Biological / chemistry* Pigments, Biological / metabolism Xanthophylls / metabolism* |
| IF | 4.441 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
|
| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 2 |
| 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 | |
| 藻類 | Codium fragile |