A chlorophyll-protein complex lacking in photosystem I mutants of Chlamydomonas reinhardtii [PDF]
Sodium dodecyl sulfate gel electrophoresis of unheated, detergent-solubilized thylakoid membranes of Chlamydomonas reinhardtii gives two chlorophyll-protein complexes. Chlorophyll-protein complex I (CP I) is the blue-green in color and can be dissociated
N. Chua, K. Matlin, P. Bennoun
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Molecular Identification of a Novel Protein That Regulates Biogenesis of Photosystem I, a Membrane Protein Complex* [PDF]
Photosystem I (PSI) is a multisubunit pigment-protein complex in the thylakoid membranes of cyanobacteria and chloroplasts. BP26, a random photosynthesis-deficient mutant strain of the cyanobacterium Synechocystis 6803 has a severely reduced PSI content,
V. Bartsevich, H. Pakrasi
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Biosynthesis of the photosystem I chlorophyll-protein complex in greening leaves of higher plants. [PDF]
Biosynthesis of photosystem I chlorophyll-protein complex, derived from chloroplast lamellae solubilized with Triton X-100, was examined in rapidly greening primary leaves of the jack bean. It was found that the chlorophyll/P700 ratio of the complex was low (35/1) in the early stages of greening, and increased steadily to a stable level (75/1) during ...
R. S. Alberte, J. Thornber, A. W. Naylor
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Isolation and Characterization of a Light-Harvesting Chlorophyll a/b Protein Complex Associated with Photosystem I. [PDF]
A chlorophyll a/b protein complex has been isolated from a resolved native photosystem I complex by mildly dissociating sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The chlorophyll a/b protein contains a single polypeptide of molecular weight 20 kilodaltons, and has a chlorophyll a/b ratio of 3.5 to 4.0. The visible absorbance spectrum of
E. Lam, W. Oritz, S. Mayfield, R. Malkin
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Organic solar cell based on photosystem I pigment-protein complex, fabrication and optimization [PDF]
The trends of using biological materials in electronic devices have made great developments in the last few years. Furthermore, the appealed cost features of organic semiconductors represent a bright low-cost, environment compatible, and efficient future for bio & nanotechnologies, especially Bio-organic solar cells which may consider as a ...
A. Zeynali +3 more
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Chlorophyll-Protein Complexes of a Photosystem II Mutant of Maize : Evidence that Chlorophyll-Protein a-2 and a Chlorophyll-Protein Complex Derived from a Photosystem I Antennae System Comigrate on Polyacrylamide Gels. [PDF]
Use of the octyl beta-d-glucopyranoside solubilization procedure of Camm and Green (1980 Plant Physiol 66: 428-432) reveals that thylakoid membranes of a photosystem (PS) II-deficient maize (Zea mays L.) mutant lack two chlorophyll protein (CP) complexes associated with PSII, i.e. CPa-1 and CPa-2.
J. Metz, R. Krueger, D. Miles
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Impaired photosystem I oxidation induces STN7-dependent phosphorylation of the light-harvesting complex I protein Lhca4 in Arabidopsis thaliana [PDF]
Reduction of the plastoquinone (PQ) pool is known to activate phosphorylation of thylakoid proteins. In the Arabidopsis thaliana mutants psad1-1 and psae1-3, oxidation of photosystem I (PSI) is impaired, and the PQ pool is correspondingly over-reduced ...
A. Ihnatowicz +5 more
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The cryo-EM structure of Photosystem I from Chromera velia with a bound superoxide dismutase heterodimer [PDF]
Photosystem I is a key component of the solar energy conversion machinery in oxygenic photosynthesis, and its core, where photochemistry occurs, is highly conserved.
Xukun Yuan +11 more
doaj +2 more sources
Detecting transient protein–protein interactions by X‐ray absorption spectroscopy: The cytochrome c 6‐photosystem I complex [PDF]
Reliable analysis of the functionality of metalloproteins demands a highly accurate description of both the redox state and geometry of the metal centre, not only in the isolated metalloprotein but also in the transient complex with its target. Here, we demonstrate that the transient interaction between soluble cytochrome c 6 and membrane‐embedded ...
I. Díaz-Moreno +5 more
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Evidence for a chlorophyll a/b—protein complex associated with Photosystem II [PDF]
A new chlorophylla/b—protein complex designated as LHCPx was separated by SDS—PAGE. This complex differs from the light‐harvesting chla/b—protein of PS II, by its chla/bratio, its fluorescence properties and its apoprotein composition. Evidence is provided that this complex corresponds to a part of PS I antenna.
R. Rémy, F. Ambard‐Bretteville
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