Results 21 to 30 of about 8,008,108 (303)
A different perspective for nonphotochemical quenching in plant antenna complexes
Nature Communications, 2021 Nonphotochemical quenching (NPQ) protects photosynthetic complexes from damage due to excess light. Here the authors explore different conformations of the plant CP29 light harvesting complex, showing how protein tuning of carotenoid excitation energies ...
Edoardo Cignoni +5 more
doaj +1 more source
De-epoxidation of Violaxanthin in Light-harvesting Complex I Proteins [PDF]
Journal of Biological Chemistry, 2004 The conversion of violaxanthin (Vx) to zeaxanthin (Zx) in the de-epoxidation reaction of the xanthophyll cycle plays an important role in the protection of chloroplasts against photooxidative damage. Vx is bound to the antenna proteins of both photosystems.
Antje, Wehner +3 more
openaire +2 more sources
Is Each Light-Harvesting Complex Protein Important for Plant Fitness? [PDF]
Plant Physiology, 2004 Abstract Many of the photosynthetic genes are conserved among all higher plants, indicating that there is strong selective pressure to maintain the genes of each protein. However, mutants of these genes often lack visible growth phenotypes, suggesting that they are important only under certain conditions or have overlapping functions. To
Ulrika, Ganeteg +3 more
openaire +2 more sources
Frontiers in Plant Science, 2022 Light absorbed by chlorophylls of Photosystems II and I drives oxygenic photosynthesis. Light-harvesting complexes increase the absorption cross-section of these photosystems.
Hamed Sattari Vayghan +10 more
doaj +1 more source
Study of factors controlling the photoprotection capacity of the thylakoid membrane [PDF]
, 2010 PhDPlants require light for the process of photosynthesis, but excess of light absorption can cause photooxidative damage. To avoid this damage, plants have evolved a photoprotective mechanism to dissipate excess light energy as heat in a process ...
Zia, Ahmad
core +4 more sources
Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes
Nature Communications, 2022 Light-matter interaction can induce changes to the properties of the system by creating hybrid collective states of light and molecular excitations, the so called polaritons.
Fan Wu +9 more
doaj +1 more source
Protein-Based Model for Energy Transfer between Photosynthetic Light-Harvesting Complexes Is Constructed Using a Direct Protein–Protein Conjugation Strategy [PDF]
, 2023 Photosynthetic organisms utilize dynamic and complex networks of pigments bound within light-harvesting complexes to transfer solar energy from antenna complexes to reaction centers.
Leo M. Hamerlynck (13900050) +11 more
core +2 more sources
Proteoliposomes for Studying Lipid-protein Interactions in Membranes in vitro
Bio-Protocol, 2021 Lipids in biomembranes can control the structure and, therefore, the functionality of membrane-embedded protein complexes. Unraveling how the lipid composition determines the mode of operation of membrane proteins provides mechanistic insights into their
Helmut Kirchhoff
doaj +1 more source
Asymmetric structure of the native Rhodobacter sphaeroides dimeric LH1–RC complex
Nature Communications, 2022 Rhodobacter sphaeroides is a model organism for studying bacterial photosynthesis. Here, the authors present structures of its native dimeric and a protein-U-lacking monomeric light-harvesting-reaction center complexes, which reveal asymmetric features ...
Kazutoshi Tani +12 more
doaj +1 more source
Frontiers in Plant Science, 2013 In response to excessive light, the thylakoid membranes of higher plant chloroplasts show dynamic changes including the degradation and reassembly of proteins, a change in the distribution of proteins, and large-scale structural changes such as ...
Yasusi eYamamoto +6 more
doaj +1 more source