Reference - Detail
| RRC ID | 69307 |
|---|---|
| Author | Streckaite S, Llansola-Portoles MJ, Pascal AA, Ilioaia C, Gall A, Seki S, Fujii R, Robert B. |
| Title | Pigment structure in the light-harvesting protein of the siphonous green alga Codium fragile. |
| Journal | 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. |
| Volume | 1862(5) |
| Pages | 148384 |
| Published | 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 |
| Altmetric score |
オルトメトリクス指標項目
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| The most frequently cited source | X(Twitter) |
| Total number of mentions | 2 |
| Altmetric score changes over past 6months | 0.0 |
| Resource | |
| Algae | Codium fragile |