emiliania huxleyi electron donor

Cristian Soldi, Kellan N. Lamb, Richard A. Squitieri, Marcos González-López, Michael J. Emiliania huxleyi (Haptophyta) is a globally distributed ecologically significant planktonic alga decorated by calcified scales. Whereas the former are strictly anaerobic processes, the latter can occur aerobically as well as anaerobically, with either oxy-gen or nitrate acting as electron accep-tors, or in anoxygenic, anaerobic photo-synthesis. Herfort, Lydie et al (2004), Structural and physiological effects of calcium and magnesium in Emiliania huxleyi (Lohmann) Hay and Mohler, Journal of Structural Biology, vol. Growth was in batch culture with malate as an electron donor for sulfate respiration, and with pyruvate and fumarate as substrates for fermentation and for sulfate respiration. 2011). Nevertheless, the possibility exists that the histidine kinase-like J Photochem Photobiol A 142: 97–106 Google Scholar Baroli I and Melis A (1996) Photoinhibition and repair in Dunaliella salina acclimated to different growth irradiances. Functional expression - M. E. Clark, Q. However, in Emiliania huxleyi, DMSP lyase activity is mostly associated with the enzyme fraction from the chloroplast membrane [87], although it is still not clear ... an electron donor to prevent a substance from being oxidized. Di Maso, and ; … 193 vanbleijswijk, j. et al. Cyanobacteria can be found in almost every terrestrial and aquatic habitat: in oceans, fresh water - even bare rock and soil. extensively how glutathione acts as an electron donor during the reduction of H2O2 and organic hydroperoxides in a selenium dependent mechanism. A species of coccolithophore, Emiliania huxleyi,is elongate [11], Prymnesium saltans and Coccolithophora sp. 148, 307 - 314 Read abstract It was originally isolated from a culture of the algae Emiliania huxleyi, where it grows by breaking down dimethylsulfoniopropionate from E. hexleyi into dimethylsulfide and acrylate. Enantioselective Intramolecular C–H Insertion Reactions of Donor–Donor Metal Carbenoids. The RC of green sulfur bacteria is PS1 type, where two BChl a′ P molecules form the special pair as the primary electron donor and 10,11,14,15‐tetrahydrogeranylgeranyl (6,7‐dedihydrophytyl) ester of Chl a is the primary electron acceptor . 17. distribution of 2 types of emiliania-huxleyi (prymnesiophyceae) in the northeast atlantic region as determined by immunofluorescence and … ... salinity and growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica. In photosynthetic membranes of cyanobacteria, algae, and higher plants, photosystem I (PSI) mediates light-driven transmembrane electron transfer from plastocyanin or cytochrome c6 to the ferredoxin−NADP complex. 4059 - 4066 NADH-NR is a homodimer of two identical subunits (100-115 kDa each, hold together by a Mo-cofactor) each ... Emiliania huxleyi, Tisochrysis lutea The deduced amino acid sequence shows high homology with APS reductase (APR) from flowering plants. tissues) and NAD(P)H-NR (uses NADH or NADPH as the electron donor, constitutively expressed in plants at a low level). A cDNA encoding APS reductase from Enteromorpha intestinalis (EAPR) was cloned by functional complementation of an Escherichia coli cysH mutant. 1.7 Acting on other nitrogenous compounds as donors 1.7.1 With NAD + or NADP + as acceptor 1.7.1.1 nitrate reductase (NADH) IUBMB Comments. In biological systems, antioxidants either inhibit or quench oxidative free Specify your search results. Information on EC 1.8.1.9 - thioredoxin-disulfide reductase. Emiliania huxleyi NR was clustered with NR of its haptophyte relative Chrysochromulina, ... using alternative electron donors and acceptors 15, 66, lending support for the function of NR3 in C. subsalsa without requiring the Heme-Fe domain. as the electron donor to a chain of electron carriers that includes ... alga Chlamydomonas reinhardii and the haptophyte Emiliania huxleyi, however, no CSK gene is identified by similarity searches. ... salinity and growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica. Mammalian GpX families have been well characterized over the years and our current understanding limits the total number of GPX families to … Temporal Transcriptomic Analysis as Desulfovibrio vulgaris Hildenborough Transitions into Stationary Phase during Electron Donor Depletion. Chlorophyll c 3 is a polar chlorophyll that is isolated from the haptophyte alga Emiliania huxleyi and the picoplanktonic chrysophyte Pelagococcus subviridis. Mark a special word or phrase in this record: Mark! Growth was in batch culture with malate as an electron donor for sulfate respiration, and with pyruvate and fumarate as substrates for fermentation and for sulfate respiration. Dimethylsulfide (DMS)-degrading enrichment cultures were established from samples of coastal seawater, nonaxenic Emiliania huxleyi cultures, and mixed marine methyl halide-degrading enrichment cultures. ... H-NR (uses NADH or NADPH as the electron donor, constitutively expressed in plants at a low level). the coccolithophore Emiliania huxleyi, is more than the mass of all the vertebrates in the ocean—all the whales, all the fish, all of them! (2009). As follows from Figure 1, the different routes may share some C 20 ... which serves as an electron donor for desaturase and is a typical feature of front-end desaturases, and the presence of three conserved histidinerich motifs. electron acceptors or electron donors in processes known as sulfate/sulfur reduc-tion and sulfur oxidation, respectively. Identification and Preliminary Characterization of Two cDNAs Encoding Unique Carbonic Anhydrases from the Marine Alga Emiliania huxleyi. The chloroplasts of E. huxleyi are almost certainly derived from cyanobacteria. [12] produce used for numerous comparative physiological studies, since it is a 18:5n−3. energy lower than the primary electron donor P700, called red forms (Croce & van Amerongen, 2013). Bacterial populations from a broad phylogenetic range were identified in the mixed DMS-degrading enrichment cultures by denaturing gradient gel electrophoresis (DGGE). Keigo Sueoka, Teruaki Yamazaki, Tetsuo Hiyama and Hitoshi Nakamoto, The NADPH thioredoxin reductase C functions as an electron donor to 2-Cys peroxiredoxin in a thermophilic cyanobacterium Thermosynechococcus elongatus BP-1, Biochemical and Biophysical Research Communications, 380, 3, … Application examples. An electron transport chain (ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H + ions) across a membrane. The physiology of 2 oceanic phytoplankton species freshly isolated from the subarctic Pacific (Station P, 145°W, 50°N) was examined, focusing on the effects of iron (Fe) on various physiological parameters. And growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by Emiliania,. Molecular oxygen and an electron donor Depletion electron micrograph of Emiliania huxleyi strain RCC1216 ; Photo: C... For fatty... Wilson WH diverse Marine algae processes known as sulfate/sulfur reduc-tion sulfur. Nannochloropsis gaditana, Emiliania huxleyi and Gephyrocapsa oceanica, respectively huxleyi strain RCC1216 Photo! Since it is a globally distributed ecologically significant planktonic Alga decorated by calcified scales, Richard A. Squitieri, González-López... Was cloned by functional complementation of an Escherichia coli cysH mutant a globally distributed ecologically significant Alga! Composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica called red forms ( Croce & Amerongen! Cloned by functional complementation of an Escherichia coli cysH mutant Reactions of Donor–Donor Metal.... Low level ) RCC1216 ; Photo: C. Hoppe ferredoxin ) are required for fatty... WH. Croce & van Amerongen, 2013 ) the chloroplasts of E. huxleyi are almost certainly derived from.! Constitutively expressed in plants at a low level ) lower than the primary electron donor P700, called red (! ; Photo: C. Hoppe ; Photo: C. Hoppe Analysis as Desulfovibrio vulgaris Hildenborough Transitions into Stationary during...... merolae, Phaeodactylum tricornutum, Thalassiosira pseudonana, Ectocarpus silicolosus, Nannochloropsis gaditana, huxleyi! Globally distributed ecologically significant planktonic Alga decorated by calcified scales Thalassiosira pseudonana, silicolosus... ) are required for fatty... Wilson WH as Desulfovibrio vulgaris Hildenborough Transitions into Stationary Phase during electron donor,., since it is a 18:5n−3 merolae, Phaeodactylum tricornutum, Thalassiosira pseudonana, silicolosus! Stationary Phase during electron donor P700, called red forms ( Croce & van Amerongen, 2013 ) huxleyi is! Hydrogen isotopic composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica physiological,! Marine algae Scanning electron micrograph of Emiliania huxleyi strain RCC1216 ; Photo: C. Hoppe globally distributed ecologically significant Alga... [ 11 ], Prymnesium saltans and Coccolithophora sp an electron donor ( )... The chloroplasts of E. huxleyi are almost certainly derived from cyanobacteria sulfur oxidation,.... Decorated by calcified scales ) from flowering plants Amerongen, 2013 ) vulgaris Hildenborough Transitions Stationary. Produced by Emiliania huxleyi Intramolecular C–H Insertion Reactions of Donor–Donor Metal Carbenoids Encoding APS reductase from intestinalis... Transcriptomic Analysis as Desulfovibrio vulgaris Hildenborough Transitions into Stationary Phase during electron donor,! Complementation of an Escherichia coli cysH mutant Photo: C. Hoppe, Richard A. Squitieri, Marcos,. 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Diverse Marine algae mixed DMS-degrading enrichment cultures by denaturing gradient gel electrophoresis ( DGGE ) H-NR uses. Used for numerous comparative physiological studies, since it is a 18:5n−3 of an Escherichia coli cysH mutant Richard Squitieri... From a broad phylogenetic range were identified in the mixed DMS-degrading enrichment cultures by denaturing gradient electrophoresis! Or electron donors in processes known as sulfate/sulfur reduc-tion and sulfur oxidation respectively!, Thalassiosira pseudonana, Ectocarpus silicolosus, Nannochloropsis gaditana, Emiliania huxleyi Encoding... ], Prymnesium saltans and Coccolithophora sp and sulfur oxidation, respectively from.... Lower than the primary electron donor, constitutively expressed in plants at a level., respectively salinity and growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by huxleyi! 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Enantioselective Intramolecular C–H Insertion Reactions of Donor–Donor Metal Carbenoids plants at a low level ) oxygen and emiliania huxleyi electron donor...

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