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The quest for energy traps in the CP43 antenna of photosystem II
Journal of Photochemistry and Photobiology B: Biology, 2015To identify energy traps in CP43, a subcomplex of the photosystem II antenna system, site energies and excitonic couplings of the QY transitions of chlorophyll (Chl) a pigments bound to CP43 are computed using electrostatic models of pigment-protein and pigment-pigment interactions.
Frank, Müh +6 more
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ODMR of carotenoid and chlorophyll triplets in CP43 and CP47 complexes of spinach
Chemical Physics Letters, 1992Abstract Optically detected magnetic resonance (ODMR) of the light-harvesting complexes CP43 and CP47 of the spinach photosynthetic machinery revealed triplet states both from carotenoids and chlorophylls. The triplet state of the only carotenoid present in the complexes (β-carotene) is observed by ODMR using fluorescence detection (FDMR) in the main
CARBONERA, DONATELLA +4 more
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CP43-like chlorophyll binding proteins: structural and evolutionary implications
Trends in Plant Science, 2006CP43, encoded by the psbC gene, is a chlorophyll (Chl)-binding protein of Photosystem II (PSII), the water-splitting and oxygen-evolving enzyme of photosynthesis. CP47, encoded by psbB, a Chl-binding protein of PSII, is closely related to CP43. The Chl-binding six transmembrane helical unit typified by CP43, is also structurally related to the N ...
James W, Murray +2 more
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The CP47 and CP43 Core Antenna Components
2005The CP47 and CP43 subunits of Photosystem II bind chlorophyll a and belong to a family of (bacterio)chlorophyll-binding proteins that serve as core antenna polypeptides in both anoxygenic and oxygenic photosynthesis. Uniquely, both of these proteins possess extended hydrophilic domains that contribute to the environment of the oxygen-evolving complex ...
Julian J. Eaton-Rye, Cindy Putnam-Evans
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Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1993
Mutants of the cyanobacterium Synechocystis sp. PCC 6803 have been generated in which parts of psbC (the gene encoding the Photosystem II chlorophyll-protein CP43) have been replaced with the homologous gene fragment from spinach. Upon the replacement of all but the 3' 84 bp of the cyanobacterial psbC gene with the homologous fragment from spinach, an ...
S D, Carpenter, I, Ohad, W F, Vermaas
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Mutants of the cyanobacterium Synechocystis sp. PCC 6803 have been generated in which parts of psbC (the gene encoding the Photosystem II chlorophyll-protein CP43) have been replaced with the homologous gene fragment from spinach. Upon the replacement of all but the 3' 84 bp of the cyanobacterial psbC gene with the homologous fragment from spinach, an ...
S D, Carpenter, I, Ohad, W F, Vermaas
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Spectral densities and absorption spectra of the core antenna complex CP43 from photosystem II
The Journal of Chemical Physics, 2022Besides absorbing light, the core antenna complex CP43 of photosystem II is of great importance in transferring excitation energy from the antenna complexes to the reaction center. Excitation energies, spectral densities, and linear absorption spectra of the complex have been evaluated by a multiscale approach.
Pooja Sarngadharan +2 more
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Investigating the Role of CP43 Phosphorylation During Environmental Stress
1998The product of the photosystem two (PSII) psbC gene is usually called CP43 since it is a chlorophyll binding protein (CP) with an apparent molecular mass of 43kDa as judged by SDS-PAGE (1). It is reasonably easy to remove biochemically CP43 from PSII to leave a subcore complex composed of CP47 and the D1 and D2 proteins (2).
Katia Georgieva +2 more
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Degradation of Antenna Chlorophyll-Binding Protein CP43 during Photoinhibition of Photosystem II
Biochemistry, 1995When photosystem II (PS II) membranes from spinach were treated with Tris (0.8 M, pH 9.0) and illuminated with white light (5000 microE m-2 s-1) under aerobic conditions at 25 degrees C, not only were the reaction center-forming D1 and D2 proteins degraded but the antenna chlorophyll-binding protein CP43 was also degraded.
Y, Yamamoto, T, Akasaka
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Isolation of CP43 and CP47 Photosystem II Proximal Antenna Complexes From Plants
2004A single-column method to purify the CP43 and CP47 pigment-protein complexes of photo-system (PS)II from higher plants is presented. To validate the isolation procedure, three different species were used (Spinacea oleracea, Beta vulgaris, and Glycine max), and the procedure worked similarly with all three.
Picorel Castaño, Rafael +2 more
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Structure-based simulation of linear optical spectra of the CP43 core antenna of photosystem II
Photosynthesis Research, 2011The linear optical spectra (absorbance, linear dichroism, circular dichroism, fluorescence) of the CP43 (PsbC) antenna of the photosystem II core complex (PSIIcc) pertaining to the S(0) → S(1) (Q(Y)) transitions of the chlorophyll (Chl) a pigments are simulated by applying a combined quantum chemical/electrostatic method to obtain excitonic couplings ...
Mueh, F., Madjet, M. E. -A., Renger, T.
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