scholarly journals Regulation of carbon and electron flow in Propionispira arboris: relationship of catabolic enzyme levels to carbon substrates fermented during propionate formation via the methylmalonyl coenzyme A pathway.

1988 ◽  
Vol 170 (9) ◽  
pp. 3996-4000 ◽  
Author(s):  
T E Thompson ◽  
J G Zeikus
Keyword(s):  
Coenzyme A ◽  
Electron Flow ◽  
Carbon Substrates ◽  
Propionate Formation ◽  
Relationship Of ◽  
Catabolic Enzyme

Site of Action and Quantitative Structure-Activity Relationship of a Series of Herbicidal N-Aryl-Substituted 3,4-Dimethyl-2-hydroxy-5-oxo-2,5-dihydro-pyrrolones

1979 ◽  
Vol 34 (11) ◽  
pp. 1028-1031 ◽  
Author(s):  
G. P. Brugnoni ◽  
P. Moser ◽  
A. Trebst
Keyword(s):  
Chemical Structure ◽  
Electron Flow ◽  
Quantitative Structure Activity Relationship ◽  
Herbicidal Activity ◽  
Quantitative Structure ◽  
Photosynthetic Electron Flow ◽  
Acceptor Side ◽  
Structure Activity ◽  
Site Of Action ◽  
Relationship Of

Abstract Substituted phenyl-hydroxy pyrrolone derivatives are potential herbicides and are found to be effective inhibitors of photosynthetic electron flow in chloroplasts. Their site of inhibition is localized at the acceptor side of photosystem II similar to DCMU. They have no effect on photophosphoryla­tion. The correlation of photosynthetic acitivity to chemical structure is studied by comparing 36 derivatives. A clear dependence of inhibitory activity on lipophilicity is found. The dependence of herbicidal activity on chemical structure is more complex.

scholarly journals THE RELATIONSHIP OF COENZYME A TO LIPIDE SYNTHESIS

1953 ◽  
Vol 203 (1) ◽  
pp. 101-108
Author(s):  
Harold P. Klein ◽  
Fritz Lipmann
Keyword(s):  
Coenzyme A ◽  
Relationship Of ◽  
The Relationship

Synthesis and Structure−Activity Relationship of Small-Molecule Malonyl Coenzyme A Decarboxylase Inhibitors

2006 ◽  
Vol 49 (5) ◽  
pp. 1517-1525 ◽  
Author(s):  
Jie-Fei Cheng ◽  
Mi Chen ◽  
David Wallace ◽  
Souvothy Tith ◽  
Masayuki Haramura ◽  
...  
Keyword(s):  
Small Molecule ◽  
Coenzyme A ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Structure Activity ◽  
Decarboxylase Inhibitors ◽  
Relationship Of

Quantitative Structure Activity Relationship of Diphenylamines as Inhibitors of Photosynthetic Electron Transport and Photophosphorylation

1979 ◽  
Vol 34 (11) ◽  
pp. 1024-1027 ◽  
Author(s):  
Walter Oettmeier
Keyword(s):  
Electron Transport ◽  
Electron Flow ◽  
Photosynthetic Electron Transport ◽  
Quantitative Structure Activity Relationship ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Quantitative Structure ◽  
Structure Activity ◽  
Cyclic Photophosphorylation ◽  
Relationship Of

Abstract A number of 16 substituted diphenylamines have been tested for their inhibitory activity on photosynthetic NADP reduction and photophosphorylation. The most active compounds exhibited pI50 values of 6.0 in photosynthetic electron transport and 6.8 in cyclic photophosphorylation, respectively. The inhibition site in electron flow of the diphenylamines is located between the two photosystems. Necessary for high activity is the substitution of the phenyl moieties by several strongly electron withdrawing substituents. A quantitative structure activity relationship according to a parabolic Hansch approach could be accomplished by using the Hammett electronic parameter as the only variable.

Quantitative Structure-Activity Relationship of Substituted Benzoquinones as Inhibitors of Photosynthetic Electron Transport

1978 ◽  
Vol 33 (9-10) ◽  
pp. 695-703 ◽  
Author(s):  
Walter Oettmeier ◽  
Susanne Reimer ◽  
Klaus Link
Keyword(s):  
Inhibitory Activity ◽  
Electron Flow ◽  
Photosynthetic Electron Transport ◽  
Quantitative Structure Activity Relationship ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Quantitative Structure ◽  
Structure Activity ◽  
Alkyl Side Chains ◽  
Relationship Of

Abstract 1.4-benzoquinones have been tested for their inhibitory activity on photosynthetic NADP+ reduction by chloroplasts. Benzoquinones with one or two branched alkyl side chains are inhibitors of electron flow. Inhibitory activity can be highly increased if one - and even more if two - halogen substitutents are introduced into the quinone moiety. Iodine substitution yields a better inhibitor than bromine than chlorine. A quantitative structure activity relationship according to a bilinear model, as developed by Kubinyi, with the lipophilicity as the only parameter could be established.

Wirkungsmechanismus und Struktur-Aktivitätsbeziehungen des Aminotriazinon-Herbizids Metribuzin. Hemmung des photosynthetischen Elektronentransports von Chloroplasten durch Metribuzin / Mode of Action and Structure-Acitivity-Relationships of the Aminotriazinone Herbicide Metribuzin. Inhibition of Photosynthetic Electron Transport in 'Chloroplasts by Metribuzin

1975 ◽  
Vol 30 (7-8) ◽  
pp. 499-504 ◽  
Author(s):  
A. Trebst ◽  
H. Wietoska
Keyword(s):  
Electron Donor ◽  
Electron Flow ◽  
Photosynthetic Electron Transport ◽  
Delayed Fluorescence ◽  
Inhibitory Potency ◽  
Photosynthetic Reactions ◽  
Relationship Of ◽  
The Relationship ◽  
Prompt And Delayed Fluorescence ◽  
Isolated Chloroplasts

Abstract The influence of the aminotriazinone herbicide Metribuzin on photosynthetic reactions of isolated chloroplasts is investigated. Metribuzin inhibits all Hill-reactions when water is the electron donor, but not photoreductions by photosystem I at the expense of an artificial electron donor. The PI50-value is 6.7. Cyclic photophosphorylation is not affected by Metribuzin. Measurements of the prompt and delayed fluorescence of the photosynthetically active chlorophyll support the notion, that Metribuzin inhibits photosynthetic electron flow between the primary and secondary electron acceptor of photosystem II (Q and plastoquinone). The relationship of inhibitory potency to chemical structure is investigated by comparing a number of related aminotriazinones. The effect of various substituents is discussed.

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