Photosystem II - Wikipedia
Photosystem II (or water-plastoquinone oxidoreductase) is the first protein complex in the light-dependent reactions of oxygenic photosynthesis. It is located in the thylakoid membrane of plants, algae, and cyanobacteria.
Structural insights into photosystem II assembly - Nature
2021年4月12日 · Biogenesis of photosystem II (PSII), nature’s water-splitting catalyst, is assisted by auxiliary proteins that form transient complexes with PSII components to facilitate stepwise assembly...
Structure of photosystems I and II - ScienceDirect
2006年2月1日 · Two large membrane protein complexes, photosystems I and II (abbreviated as PS I and PS II, respectively) are embedded in this membrane. They catalyze the initial step of photosynthesis, the light induced charge separation across the photosynthetic membrane.
High-resolution cryo-EM structure of photosystem II reveals damage from ...
2021年3月22日 · Photosystem II (PSII) is a multi-subunit pigment-protein complex embedded in the thylakoid membranes of higher plants, green algae, and cyanobacteria, and is the only molecular machine capable of...
Photosystem II - an overview | ScienceDirect Topics
Photosystem II (PSII) is the multisubunit chloroplast membrane-associated pigment–protein complex that uses the energy of sunlight to drive the oxidation of water, evolving oxygen, donating electrons into the photosynthetic electron transfer chain, …
3WU2: Crystal structure analysis of Photosystem II complex
Photosystem II is the site of photosynthetic water oxidation and contains 20 subunits with a total molecular mass of 350 kDa. The structure of photosystem II has been reported at resolutions from 3.8 to 2.9 Å.
Photosystem II, a Structural Perspective - ScienceDirect
2009年1月1日 · This chapter elucidates the structure and function of the photosystem II (PS II) apparatus. PS II, a multi-subunit protein–cofactor complex is overviewed with D1, D2 polypeptides, P680 the primary donor and pheophytins.
• Functionally most important structure of protein • Consists of 2 phylloquinones, 6 chlorophylls, 3 Fe4S4 clusters • Arranged in two branches: PsaA and PsaB related by Pseudo C-2 axis – PsaA branch is eC-A1, -B2, -A3 and PsaB is eC-B1, -A2, -B3 – Special pie interaction between eC-A1 and eC-B1 with p700 initiates charge separation
RCSB PDB - 2AXT: Crystal Structure of Photosystem II from ...
Here we describe the most complete cyanobacterial photosystem II structure obtained so far, showing locations of and interactions between 20 protein subunits and 77 cofactors per monomer. Assignment of 11 beta-carotenes yields insights into electron and energy transfer and photo-protection mechanisms in the reaction centre and antenna subunits.
Structure of photosystem II and substrate binding at room …
2016年11月21日 · PS II, a membrane-bound multi-subunit pigment protein complex, couples the one-electron photochemistry at the reaction centre with the four-electron redox chemistry of water oxidation at the Mn 4...