Journal ArticleDOI
THE α‐OXIDASE SYSTEM OF YOUNG PEA LEAVES (Pisum sativum) AS GENERATOR OF ELECTRONICALLY EXCITED STATES. EXCITATION IN THE DARK UNDER NATURAL CONDITIONS
Reads0
Chats0
TLDR
The first case of photobiochemistry without light within a natural system was reported in this paper, where the α-oxidase system of young leaves from germinating Pisum sativum results in concomitant excitation of the chloroplasts or/and fractions present in the αoxidases preparation.Abstract:
. The aerobic oxidation of saturated long chain fatty acids to the lower aldehyde and CO2 catalyzed by the α-oxidase system of young leaves from germinating Pisum sativum results in concomitant excitation of the chloroplasts or/and fractions present in the α-oxidase preparation. The excitation is attested to by both chlorophyll emission and Hill activity. This is the first case of photobiochemistry without light within a natural system.read more
Citations
More filters
Journal ArticleDOI
Photochemistry and photobiology without light.
Giuseppe Cilento,Waldemar Adam +1 more
TL;DR: The coverage concentrates on photodamage of DNA and RNA, the photochemistry of flavins, vitamin D, tryptophan, arachidonic acid, chlorophyll, lipid peroxidation, urocanase activation, excitation of chlorophlasts, and the aerobic oxidation of Schiff bases derived from amino acids and proteins.
Journal ArticleDOI
Photobiochemistry without light.
TL;DR: Efficient excited state formation — much higher than that hitherto expected — may occur in organelles and in intact cells, and the idea that cells may utilize excited states to trigger photochemical processes even in the dark is growing awareness.
Journal ArticleDOI
The 75°c thermoluminescence band of green tissues: chemiluminescence from membrane‐chlorophyll interaction
Éva Hideg,Imre Vass +1 more
TL;DR: The authors suggest that the 75°C TL band is a result of a temperature-enhanced interaction between molecular oxygen and the photosynthetic membrane, possibly involving lipid peroxidation.
Journal ArticleDOI
Enantioselective α-hydroperoxylation of long-chain fatty acids with crude enzyme of marine green alga Ulva pertusa
TL;DR: When palmitic acid was incubated with crude enzyme of marine green alga Ulva pertusa, (R)-2-hydroperoxyhexadecanoic acidwas formed in high enantiomeric purity (>99%ee).
Journal ArticleDOI
Alpha hydroxylation of carboxylic acids with molecular oxygen catalyzed by the alpha oxidase of peas (Pisum sativum) - a novel biocatalytic synthesis of enantiomerically pure (R)-2-Hydroxy Acids
Waldemar Adam,Wilhelm Boland,Jenny Hartmann-Schreier,Hans-Ulrich Humpf,Michael Lazarus,Alexander Saffert,Chantu R. Saha-Möller,Peter Schreier +7 more
TL;DR: The substrate selectivities of the α oxidation of saturated, unsaturated, and heteroatom-containing (oxygen, sulfur) carboxylic acids by the enzyme extract of peas (Pisum sativum) indicate that t...
References
More filters
Journal ArticleDOI
Spectrophotometric Determination of Chlorophylls and Pheophytins in Plant Extracts
Journal ArticleDOI
Chemiluminescence of organic peroxides. Conversion of ground-state reactants to excited-state products by the chemically initiated electron-exchange luminescence mechanism
TL;DR: In this paper, a mechanism for thermal production of excited states is discussed, where electron transfer from an easily oxidized donor to a suitable organic peroxide followed by oxygen-oxygen bond cleavage generates radical ion intermediates.
Journal ArticleDOI
Fat metabolism in higher plants. XII. alpha-Oxidation of long chain fatty acids.
R. O. Martin,Paul K. Stumpf +1 more
Journal ArticleDOI
Generation of electronically excited triplet species in biochemical systems
Journal ArticleDOI
Chemical and biochemical aspects of superoxide radicals and related species of activated oxygen
TL;DR: Formation, interconversion, and reactivity of O-.2 and related activated oxygen species, methods available for their detection, and the basis of their biological toxicity are briefly reviewed.