Transformation of ubiquinone-9 into ubiquinone-10 by the cuprate version of the Wurtz reaction at the key stage

Author(s):  
A. M. Moiseenkov ◽  
A. B. Veselovskii ◽  
T. M. Filippova ◽  
A. P. Kharchevnikov ◽  
E. A. Obol'nikova ◽  
...  
Keyword(s):  
ChemInform ◽  
1990 ◽  
Vol 21 (7) ◽  
Author(s):  
A. M. MOISEENKOV ◽  
A. B. VESELOVSKII ◽  
T. M. FILIPPOVA ◽  
A. P. KHARCHEVNIKOV ◽  
E. A. OBOL'NIKOVA ◽  
...  
Keyword(s):  

2000 ◽  
Vol 282 (2) ◽  
pp. 209-217 ◽  
Author(s):  
Thomas Menke ◽  
Petra Niklowitz ◽  
Stefan Adam ◽  
Michael Weber ◽  
Bernhard Schlüter ◽  
...  

Diversity ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 422
Author(s):  
Ryosuke Nakai ◽  
Takeshi Naganuma ◽  
Nozomi Tazato ◽  
Tadao Kunihiro ◽  
Sho Morohoshi ◽  
...  

We previously showed that novel filterable bacteria remain in “sterile” (<0.2 μm filtered) terrestrial environmental samples from Japan, China, and Arctic Norway. Here, we characterized the novel filterable strain IZ6T, a representative strain of a widely distributed lineage. Phylogenetic analysis showed that this strain was affiliated with the Rhizobiales (now proposed as Hyphomicrobiales) of Alphaproteobacteria, but distinct from any other type strains. Strain IZ6T shared the following chemotaxonomic features with the closest (but distantly) related type strain, Flaviflagellibacter deserti SYSU D60017T: ubiquinone-10 as the major quinone; phosphatidylethanolamine, phosphatidylcholine, and phosphatidylglycerol as major polar lipids; and slightly high G+C content of 62.2 mol%. However, the cellular fatty acid composition differed between them, and the unsaturated fatty acid (C18:1ω7c/C18:1ω6c) was predominantly found in our strain. Moreover, unlike methyrotrophs and nitrogen-fixers of the neighboring genera of Hyphomicrobiales (Rhizobiales), strain IZ6T cannot utilize a one-carbon compound (e.g., methanol) and fix atmospheric nitrogen gas. These findings were consistent with the genome-inferred physiological potential. Based on the phylogenetic, physiological, and chemotaxonomic traits, we propose that strain IZ6T represents a novel genus and species with the name Terrihabitans soli gen. nov., sp. nov. (=NBRC 106741T = NCIMB 15058T). The findings will provide deeper insight into the eco-physiology of filterable microorganisms.


2021 ◽  
Vol 4 (11(75)) ◽  
pp. 11-16
Author(s):  
А. Kurylenko ◽  
O. Kurylenko ◽  
О. Kuchmenko ◽  
V. Havii

Purpose. The aim of the study is to investigate the effect of pre-sowing treatment of winter rye seeds of Synthetic 38 and Zabava with compositions of metabolically active substances on the content of photosynthetic pigments in plant leaves at different phases of ontogenesis. Materials and methods. The research materials were winter rye varieties Synthetic 38 and Zabava, and combinations of metabolically active substances: vitamin E (10-8M), paraoxybenzoic acid (0,001%), methionine (0,001%), ubiquinone-10 (10-8M) and MgSO4 (0,001%). The research scheme provided 4 options: 1) control (untreated seeds); 2) seeds, treated with a composition of substances: vitamin E + paraoxybenzoic acid + methionine + MgSO4; 3) seeds treated with a composition of substances: vitamin E + paraoxybenzoic acid + methionine; 4) seeds, processing by composition of substances: vitamin E + ubiquinone-10. Studies were conducted in the following phases of rye development: tillering, tubing, earing, flowering. The content of pigments - chlorophyll a, b and the total content of chlorophyll in the leaves of rye plants was determined by spectrophotometric method. Results and conclusions. It was demonstrated for the first time that the use of compositions of metabolically active compounds for pre-sowing treatment of winter rye varieties Synthetic 38 and Zabava leads to an increase of main chlorophyll, chlorophyll a and b in plant leaves in the dynamics from tillering to flowering. The composition consisting of vitamin E, para-oxybenzoic acid, methionine and MgSO4 showed the greatest efficiency. The effectiveness of this composition may be due to the complex action of all metabolically active compounds that are part of it. The obtained results may indicate a potentially more efficient absorption and conversion of energy by plants and the positive effect of these compositions on the photosynthesis of winter rye plants. Substances that have shown their effectiveness can be used as components of stimulants.


Author(s):  
Veeraya Weerawongwiwat ◽  
Jong-Hwa Kim ◽  
Jung-Hoon Yoon ◽  
Min Kuk Suh ◽  
Han Sol Kim ◽  
...  

A novel bacterium, designated strain CAU 1637T, was isolated from a tidal mudflat. Cells of strain CAU 1637T were Gram-stain-negative, aerobic, motile with single flagellum and rod-shaped. The optimum conditions for growth were observed at 30 °C, pH 6.0 and in the presence of 2 % (w/v) NaCl. The respiratory quinone was ubiquinone-10. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain CAU 1637T was closely related to the genus Roseibium , with the highest similarity to Roseibium aestuarii NRBC 112946T (97.4 %), followed by Roseibium hamelinense NRBC 16783T (96.8 %), Roseibium aquae JCM 19310T (96.4 %), Roseibium sediminis KCTC 52373T (95.8 %) and Roseibium denhamense JCM 10543T (95.3 %). The predominant cellular fatty acids were C18 : 1  ω7c 11-methyl and summed feature 8 (C18 : 1  ω7c and/or C18 : 1  ω6c). The major polar lipids consisted of diphosphatidylglycerol and phosphatidylglycerol. The average nucleotide identity values between the novel isolate and related strains ranged from 71.0 to 76.4 %, and the DNA−DNA hybridization values ranged from 19.3 to 20.3 %. The G+C content was 58.4 mol% and the whole-genome size was 4.6 Mb, which included 17 contigs and 3931 protein-coding genes. Based on the taxonomic data, strain CAU 1637T represents a novel species of the genus Roseibium , for which the name Roseibium limicola sp. nov. is proposed. The type strain is CAU 1637T (=KCTC 82429T=MCCC 1K06080T).


2017 ◽  
pp. 104-107
Author(s):  
K.N. Kontorshchikova ◽  
V.N. Krylov ◽  
A.N. Ovchinnikov ◽  
Yu.R. Tikhomirova ◽  
T.I. Kolegova ◽  
...  
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