The decreased PG content of pgp1 inhibits PSI photochemistry and limits reaction center and light-harvesting polypeptide accumulation in response to cold acclimation
Sign Up to like & getrecommendations! Published in 2022 at "Planta"
DOI: 10.1007/s00425-022-03819-0
Abstract: Main conclusion Decreased PG constrains PSI activity due to inhibition of transcript and polypeptide abundance of light-harvesting and reaction center polypeptides generating a reversible, yellow phenotype during cold acclimation of pgp1 . Abstract Cold acclimation… read more here.
Keywords: reaction center; pgp1; cold acclimation; light harvesting ... See more keywords
Exciton transfer between LH1 antenna complex and photosynthetic reaction center dimer.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of biological physics"
DOI: 10.1007/s10867-021-09576-7
Abstract: The exciton transfer between light-harvesting complex 1(LH1) and photosynthetic reaction center dimer is investigated theoretically. We assume a ring shape structure of the LH1 complex with dimer in the ring centre. The kinetic equations which… read more here.
Keywords: antenna complex; exciton transfer; dimer; reaction center ... See more keywords
Reorganization energies of the electron transfer reactions involving quinones in the reaction center of Rhodobacter sphaeroides
Sign Up to like & getrecommendations! Published in 2018 at "Photosynthesis Research"
DOI: 10.1007/s11120-018-0560-6
Abstract: In framework of the continuum electrostatics theory, the reorganization energies of the electron transfers QA−–QB (fast phase), Bph−–QA, P+–QA−, and P+–QB− in the photosynthetic bacterial reaction center have been calculated. The calculations were based on… read more here.
Keywords: reorganization energies; transfer; reaction center; reorganization ... See more keywords
Evaluation method of steric shielding effect around nitroxide radical reaction center based on molecular volume within a virtual ball
Sign Up to like & getrecommendations! Published in 2019 at "Structural Chemistry"
DOI: 10.1007/s11224-019-01335-8
Abstract: Steric shielding affects the stability of various molecules such as nitroxide radicals, which have many applications in a variety of fields. Thus, the mechanisms that maintain molecular stability are of particular interest. A new method… read more here.
Keywords: method; shielding effect; steric shielding; reaction center ... See more keywords
Cryo-EM structure of the whole photosynthetic reaction center apparatus from the green sulfur bacterium Chlorobaculum tepidum.
Sign Up to like & getrecommendations! Published in 2023 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2216734120
Abstract: Light energy absorption and transfer are very important processes in photosynthesis. In green sulfur bacteria light is absorbed primarily by the chlorosomes and its energy is transferred via the Fenna-Matthews-Olson (FMO) proteins to a homodimeric… read more here.
Keywords: structure; apparatus; green sulfur; chlorobaculum tepidum ... See more keywords
Cyanobacterial Photosystem II reaction center design in tobacco chloroplasts increases biomass in low light.
Sign Up to like & getrecommendations! Published in 2022 at "Plant physiology"
DOI: 10.1093/plphys/kiac578
Abstract: The D1 polypeptide of the photosystem II (PSII) reaction center complex contains domains that regulate primary photochemical yield and charge recombination rate. Many prokaryotic oxygenic phototrophs express two or more D1 isoforms differentially in response… read more here.
Keywords: low light; photosystem; tobacco; biomass ... See more keywords
X-ray structure of the Rhodobacter sphaeroides reaction center with an M197 Phe→His substitution clarifies the properties of the mutant complex
Sign Up to like & getrecommendations! Published in 2022 at "IUCrJ"
DOI: 10.1107/s2052252521013178
Abstract: Crystal structures of an F(M197)H mutant form of the photosynthetic reaction center obtained using different techniques clarify the optical and electrochemical properties of the primary electron donor and the increased resistance of this mutant complex… read more here.
Keywords: ray structure; mutant complex; reaction center; structure rhodobacter ... See more keywords
Quantum coherence as a witness of vibronically hot energy transfer in bacterial reaction center
Sign Up to like & getrecommendations! Published in 2017 at "Science Advances"
DOI: 10.1126/sciadv.1603141
Abstract: Observation of coherence shifts reveals hot energy transfer and excess energy dissipation mechanisms in photosynthesis. Photosynthetic proteins have evolved over billions of years so as to undergo optimal energy transfer to the sites of charge… read more here.
Keywords: reaction center; energy transfer; hot energy; energy ... See more keywords
Reactivity of haloalkanes in their reactions with the chlorine atom
Sign Up to like & getrecommendations! Published in 2017 at "Kinetics and Catalysis"
DOI: 10.1134/s0023158417030041
Abstract: Experimental kinetic data on reactions of the chlorine atom with halogenated derivatives of methane and ethane (37 reactions) have been analyzed by the intersecting-parabolas method. The following five factors have an effect on the activation… read more here.
Keywords: reactions chlorine; haloalkanes reactions; activation energy; chlorine atom ... See more keywords
Properties and Crystal Structure of the Cereibacter sphaeroides Photosynthetic Reaction Center with Double Amino Acid Substitution I(L177)H + F(M197)H
Sign Up to like & getrecommendations! Published in 2023 at "Membranes"
DOI: 10.3390/membranes13020157
Abstract: The photosynthetic reaction center of the purple bacterium Cereibacter sphaeroides with two site-directed mutations Ile-L177–His and M197 Phe–His is of double interest. The substitution I(L177)H results in strong binding of a bacteriochlorophyll molecule with L-subunit.… read more here.
Keywords: substitution; reaction center; substitution l177; l177 m197 ... See more keywords