Photocatalytic activity of the light-harvesting complex of photosystem II (LHCII) monomer

被引：3
|
作者：
Kondo, Masaharu [1 ]
Matsuda, Haruka [1 ]
Noji, Tomoyasu [1 ,3 ]
Nango, Mamoru [2 ]
Dewa, Takehisa [1 ]
机构：
[1] Nagoya Inst Technol, Grad Sch Engn, Dept Life Sci & Appl Chem, Showa Ku, Gokiso Cho, Nagoya, Aichi 4668555, Japan
[2] Osaka City Univ, Res Ctr Artificial Photosynth ReCAP, Sumiyoshi Ku, 3-3-138 Sugimoto, Osaka 5588585, Japan
[3] Univ Tokyo, Res Ctr Adv Sci & Technol RCAST, Meguro Ku, 4-6-1 Komaba, Tokyo 1538904, Japan
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2021年 / 406卷
关键词：
Light-harvesting complex; Chlorophyll-membrane protein; Photoreduction; Photoinduced hydrogen production; PHOTOINDUCED HYDROGEN-PRODUCTION; MG CHLOROPHYLL-A; PROTEIN COMPLEX; PLATINUM; IMMOBILIZATION; FLUORESCENCE; AGGREGATION; SPIRULINA; BINDING; PLANT;
D O I：
10.1016/j.jphotochem.2020.112926
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Light-harvesting complex of photosystem II (LHCII) is the most abundant membrane protein-chlorophyll complex in chloroplasts. Here, we evaluated the photocatalytic activity of the native trimer and the enzymatically treated monomer forms of LHCII. Upon white light irradiation using a solar simulator, photocatalytic reduction of methylviologen revealed that the activity of monomeric LHCII was higher than that of the trimer form. Fluorescence of the monomeric LHCII was more significantly quenched by methylviologen than that of the trimer form. In the presence of Pt nanoparticles in a catalytic solution system, photoinduced hydrogen production was observed for the LHCII monomer. The difference in photocatalytic activities of LHCII trimer and monomer are briefly discussed in terms of an interaction between LHCII and methylviologen.
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页数：6
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