Biochemical and spectroscopic characterization of photocomplexes from the extremely halophilic purple sulfur bacterium, Halorhodospira halophila strain SL1T [0.03%]
极端嗜盐紫色硫细菌Halorhodospira halophila SL1T菌株光复合物的生化和谱学表征
I Satoh,K Inada,N Hiwatashi et al.
I Satoh et al.
The purple sulfur phototrophic bacterium Halorhodospira (Hlr.) halophila type strain SL1T (= DSM244T) is among the most halophilic bacterium known and has been used as a model for exploring the osmoadaptive and photosynthetic strategies tha...
Na+-translocating oxaloacetate decarboxylase from Vibrio cholerae: the functional tautomeric form of the substrate and the proton pathways in catalysis [0.03%]
霍乱弧菌Na+转位草酰乙酸脱羧酶：底物的催化构象以及催化的质子通道
Yulia V Bertsova,Alexander D Kvartalov,Marina V Serebryakova et al.
Yulia V Bertsova et al.
Membrane-bound decarboxylases couple carboxylic acid decarboxylation to the transport of Na+ ions out of prokaryotic cells. The molecular mechanism of decarboxylase action is not yet known, which contrasts with the progress achieved in stud...
Size-dependent fluorescence kinetics reveal contributions of intrinsic quenching and singlet-triplet annihilation during LHCII aggregation [0.03%]
尺寸依赖的荧光动力学揭示了LHCII聚集过程中本征淬灭和单线态-三线态湮没的贡献
Francois Conradie,Bertus van Heerden,Michal Gwizdala et al.
Francois Conradie et al.
Aggregation of the main antenna complex of higher plants, Light-Harvesting Complex II (LHCII), is widely used as an in-vitro model for energy-dependent quenching (qE), yet fluorescence reduction in aggregates is frequently interpreted witho...
Xi Zhao,Jun-Xun Zhu,Gen-Cai Li et al.
Xi Zhao et al.
Phycobiliproteins, particularly C-phycocyanin (CPC), serve as major light-harvesting complexes in cyanobacteria, exhibiting high efficiency in light-harvesting and energy transfer. Currently, the easy and large-scale acquisition of function...
Cryo-EM structure of photosystem II D1-V185T mutant from Thermosynechococcus vestitus [0.03%]
热绿藻视紫红质II型D1-V185T突变体的冷冻电镜结构
Haowei Jiang,Yoshiki Nakajima,Fusamichi Akita et al.
Haowei Jiang et al.
Photosystem II (PSII) catalyzes water oxidation into electrons, protons and dioxygen at its catalytic center, a Mn4CaO5 cluster, utilizing light energy. An amino acid residue D1-V185 in the D1 protein is located close to the Mn4CaO5 cluster...
Lauri Nikkanen,Russell Woodford,Ella Andersin et al.
Lauri Nikkanen et al.
Regulation of proton motive force (pmf) via ATP synthase activity is a critical mechanism by which photosynthetic organisms maintain redox homeostasis and control the activation and inactivation of photoprotective responses under fluctuatin...
Expansion microscopy visualizes the photosystem distribution in Synechocystis cells [0.03%]
扩展显微镜可视化发Synechocystis细胞中的光系统分布
Peter R Bos,Elio Langlois-Legrand,Emilie Wientjes
Peter R Bos
Photosynthesis in cyanobacteria relies on light capture by photosystem I (PSI), photosystem II (PSII) and the phycobilisome (PBS). Although these complexes are generally considered to be intermixed within the thylakoid membrane, several stu...
Mitochondrial dysfunction redirects proton transport and energy homeostasis in Saccharomyces cerevisiae under variable pH and glucose conditions [0.03%]
酸性和葡萄糖条件变化下酿酒酵母线粒体功能紊乱导致质子转运和能量平衡发生重构
Liana Anikyan,Anahit Shirvanyan,Nicoletta Guaragnella et al.
Liana Anikyan et al.
Mitochondrial function is crucial for the regulation of energy metabolism, proton homeostasis, and stress adaptation in Saccharomyces cerevisiae. This study demonstrates the role of mitochondria in modulating cellular responses to varying e...
Comparative study of charge separation mechanisms in plant photosystem II: Femtosecond broadband absorption spectroscopy of core particles and D1/D2/cyt b559 complexes [0.03%]
植物光系统II中电荷分离机制的比较研究：核心颗粒及D1/D2/细胞b559复合物的飞秒宽带吸收光谱研究
Dmitry A Cherepanov,Alexey A Zabelin,Ivan V Shelaev et al.
Dmitry A Cherepanov et al.
The charge separation mechanism in spinach photosystem II core complexes (PSII-CC) and D1/D2/cytb559 reaction centers (D1D2-RC) was investigated using broadband femtosecond absorption spectroscopy in combination with kinetic modeling. The p...
Dana Verhoeven,Valérie Hogenes,Silke Knol et al.
Dana Verhoeven et al.
Photosynthesis constantly adapts to fluctuating light and temperature. Under high light, non-photochemical quenching (NPQ) protects the photosynthetic machinery by dissipating excess excitation energy as heat. With rising global temperature...