Multiscale computational studies of biological light capture

Posttranslational Modifications of FERREDOXIN-NADP+

2020-02-01 Photosynthesis - Photosynthesis - Proteins: Many of the lamellar proteins are components of the chlorophyll–protein complexes described above. Other proteins include enzymes and protein-containing coenzymes. Enzymes are required as organic catalysts for specific reactions within the lamellae. Protein coenzymes, also called cofactors, include important electron carrier molecules called cytochromes, … With its extensive use of color, it surveys the most important proteins involved in photosynthesis, discussing the structural information we have at our disposal.

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The antenna pigments are predominantly chlorophyll b, xanthophylls, and carotenes. 2011-09-20 · In photosynthetic bacteria, these two steps are carried out in the large membrane protein assembly called the photosynthetic core complex. There are two main constituent proteins in the core complex: light-harvesting complex I (LH1) and the reaction center (RC). Photosynthesis - Photosynthesis - Proteins: Many of the lamellar proteins are components of the chlorophyll–protein complexes described above. Other proteins include enzymes and protein-containing coenzymes. Enzymes are required as organic catalysts for specific reactions within the lamellae.

In Vitro Reconstitution of Light-harvesting Complexes of Plants

Under these conditions, a 22 kDa ELIP-like desiccation-induced protein (dsp 22) accumulated in the thylakoid membranes. pmf),which powers ATP synthesis by the fourth protein complex,F-ATPase17.In the dark,CO 2 reduction to car-bohydrates is fuelled by ATP and NADPH 18. All of the four protein complexes that are necessary for the light-driven reactions of photosynthesis reside in the chloroplast,in a membrane continuum of flattened Grimme, L.H., Damm, I., Steinmetz, D. and Scheffczyk, B. (1987) Pigment-protein complexes of algal thylakoid membranes: variations in pattern, pigment composition and reaction centre II types during the cell cycle of Chlorellafusca and after adaptation to low light intensities.

SweCRIS

The major complexes identified include PS II, PS I, cyt b 6 f , ATPase, and NDH, as well as the apoproteins of LHC I and LHC II. With its extensive use of color, it surveys the most important proteins involved in photosynthesis, discussing the structural information we have at our disposal. Most chapters are dedicated to one protein, while a few also summarize general associated concepts. Photosystems are functional and structural units of protein complexes involved in photosynthesis that together carry out the primary photochemistry of photosynthesis: the absorption of light and the transfer of energy and electrons. Photosystems are found in the thylakoid membranes of plants, algae and cyanobacteria which are located inside the chloroplasts of plants and algae, and in the cytoplasmic membrane of photosynthetic bacteria. There are two kinds of photosystems: I and II. The photosynthetic unit includes the reaction centers (RC 1 and RC 2) and the light-harvesting complexes which contribute to evolution of one O2 molecule. The light-harvesting complexes, that greatly expand the absorptance capacity of the reactions, have evolved along three principal lines. The light absorption processes associated with photosynthesis take place in large protein complexes known as photosystems.

Most chapters are dedicated to one protein, while a few also summarize general associated concepts. 1996-05-01 The light absorption processes associated with photosynthesis take place in large protein complexes known as photosystems. The one known as Photosystem II contains the same kind of chlorophyll a as Photosystem I but in a different protein environment with an absorption peak at 680 nm. Complex metabolic processes such as photosynthesis and respiration coexist and predominantly occur in highly specialised thylakoid membranes. The photosynthetic and respiratory electron transport chain shares several components between these processes, a … 2011-09-20 2004-12-01 In this review, we discuss our recent work on modelling biological pigment-protein complexes, such as the Fenna-Matthews-Olson complex and light-harvesting complex-II, to explain their electronic energy transport properties.
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1996-05-01 The light absorption processes associated with photosynthesis take place in large protein complexes known as photosystems.

Dynamic pH‐induced conformational changes of the PsbO protein in the fluctuating acidity of the thylakoid lumen.
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MeSH: Sucrase-Isomaltase Complex - Finto

We highlight the diversity of pigment-protein complexes that fuel the conversion of radiant energy to chemical bond energy in land plants and the diverse groups of the algae, detail the ways in which environmental parameters (i.e. light quantity and quality, nutrients) modulate the synthesis of these complexes, and discuss the evolutionary relationships among the LHC structural polypeptides. 2004-12-01 · The primary step in this process — the conversion of sunlight into chemical energy — is driven by four, multisubunit, membrane-protein complexes that are known as photosystem I, photosystem II Berkeley Lab researchers have uncovered the unique structure of photosystem I (PSI), a key complex of proteins involved in photosynthesis, in moss, helping to shed light on how plants evolved. An international team of researchers has solved the structure and elucidated the function of photosynthetic complex I. This membrane protein complex plays a major role in dynamically rewiring Membrane-Bound Protein Complexes for Photosynthesis and Respiration in Cyanobacteria Light ATP Cyt b 6 f PSII PSI PBS Lumen NAD(P)H Cytoplasm COX PQ SDH O 2 CO 2 ADP NAD(P)H NADP O2 PC Fdox red Photosynthesis converts solar energy to chemical energy by means of two large pigment-protein complexes: photosystem I (PSI) and photosystem II (PSII).