翻訳と辞書 Words near each other ・ Lighthouse in Krynica Morska ・ Lighthouse Inn ・ Lighthouse Inn (New London, Connecticut) ・ Lighthouse Interactive ・ Lighthouse International ・ Light-dependent reactions ・ Light-dragging effects ・ Light-emitting diode ・ Light-emitting electrochemical cell ・ Light-field camera ・ Light-Foot ・ Light-front computational methods ・ Light-front quantization applications ・ Light-gas gun ・ Light-gated ion channel ・ Light-harvesting complex ・ Light-harvesting complexes of green plants ・ Light-Hearted Isabel ・ Light-in-flight imaging ・ Light-independent reactions ・ Light-induced voltage alteration ・ Light-Life ・ Light-mantled albatross ・ Light-on-dark color scheme ・ Light-Oxygen-Voltage-sensing domain ・ Light-second ・ Light-sport aircraft ・ Light-time correction ・ Light-vented bulbul ・ Light-weight Combat Vehicle System Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Light-harvesting complex ： ウィキペディア英語版 Light-harvesting complex A light-harvesting complex is a complex of subunit proteins that may be part of a larger supercomplex of a photosystem, the functional unit in photosynthesis. It is used by plants and photosynthetic bacteria to collect more of the incoming light than would be captured by the photosynthetic reaction center alone. Light-harvesting complexes are found in a wide variety among the different photosynthetic species. The complexes consist of proteins and photosynthetic pigments and surround a photosynthetic reaction center to focus energy, attained from photons absorbed by the pigment, toward the reaction center using Förster resonance energy transfer. ==The function of a light-harvesting complex== Absorption of a photon by a molecule can lead to electronic excitation when the energy of the captured photon matches that of an electronic transition. The fate of such excitation can be a return to the ground state or another electronic state of the same molecule. When the excited molecule has a nearby neighbour molecule, the excitation energy may also be transferred, through electromagnetic interactions, from one molecule to another. This process is called resonance energy transfer, and the rate depends strongly on the distance between the energy donor and energy acceptor molecules. Light-harvesting complexes have their pigments specifically positioned to optimize these rates. Light-harvesting complexes are located around the reaction center and additional pigments, carotenoids, and chlorophylls to funnel absorbed energy to the special pair via resonance energy transfer. Carotenoids serve a secondary function, suppressing damaging photochemical reactions, in particular those including oxygen, which can be induced by bright sunlight. Laboratory tests have shown that plants lacking carotenoids quickly die on exposure to light and oxygen. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Light-harvesting complex」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.