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1.


   
    Autotrophic synthesis of polyhydroxyalkanoates by the bacteria Ralstonia eutropha in the presence of carbon monoxide / T. G. Volova, G. S. Kalacheva, O. V. Altukhova // Applied Microbiology and Biotechnology. - 2002. - Vol. 58, Is. 5. - P675-678, DOI 10.1007/s00253-002-0941-8 . - ISSN 0175-7598
Кл.слова (ненормированные):
3 hydroxybutyric acid -- acetoacetyl coenzyme a reductase -- acetyl coenzyme A acyltransferase -- beta hydroxyvalerate -- butyrate dehydrogenase -- carbon monoxide -- electrolyte -- hydrogen -- oxidoreductase -- poly(3 hydroxybutyric acid) -- poly(3 hydroxybutyric acid)synthase -- polyhydroxyalkanoic acid -- polymer -- unclassified drug -- valeric acid -- bacterium -- article -- autotrophy -- bacterial growth -- bacterial strain -- biomass production -- controlled study -- crystallization -- enzyme activity -- molecular weight -- nonhuman -- synthesis -- temperature -- Wautersia eutropha -- Carbon Monoxide -- Culture Media -- Cupriavidus necator -- Fatty Acids -- Lipids -- Polyesters -- Bacteria (microorganisms) -- Negibacteria -- Ralstonia -- Wautersia eutropha
Аннотация: It has been found that the carbon monoxide (CO)-resistant strain of the hydrogen bacteria Ralstonia eutropha B5786 is able to synthesise polyhydroxy-alkanoates (PHAs) in the presence of CO under autotrophic conditions. This strain, grown on model gas mixtures containing 5-25% CO (v/v), accumulates up to 70-75% (of absolutely dry matter) PHA, without significant variation in the yield coefficient on hydrogen. No suppression of the activities of the key enzymes of PHA synthesis (?-ketothiolase, acetoacetyl-CoA-reductase, butyrate dehydrogenase and poly-3-hydroxybutyrate synthase) was recorded. The PHA synthesised is a copolymer containing mostly ?-hydroxybutyrate (more than 99 mol%) with trace amounts of ?-hydroxyvalerate. The investigated properties of the polymer (molecular weight, crystallinity, temperature characteristics) do not differ from those of the polymer synthesised on electrolytic hydrogen.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Br. Russian Academy of Sci., 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Kalacheva, G.S.; Altukhova, O.V.

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2.


   
    Effect of salinity on the adaptive capacity of recombinant strains of escherichia coli and bacillus subtilis / A. N. Boyandin [и др.] // Mikrobiologiya. - 2000. - Vol. 69, Is. 2. - С. 243-247 . - ISSN 0026-3656
Кл.слова (ненормированные):
Genetically modified microorganisms -- Salinity -- Salt resistance -- sodium chloride -- adaptation -- article -- Bacillus subtilis -- electrolyte balance -- Escherichia coli -- genetic recombination -- genetics -- physiology -- Adaptation, Biological -- Bacillus subtilis -- Escherichia coli -- Recombination, Genetic -- Sodium Chloride -- Water-Electrolyte Balance
Аннотация: Effect of different concentrations of salts on natural and recombinant strains of Bacillus subtilis and Escherichia coli was studied. The recombinant strain of B. subtilis was found to be more osmotolerant than the wild-type strain of this bacterium, whereas the opposite situation was observed for the recombinant and wildtype strains of E. coli. Some salts exerted a bacteriostatic effect on E. coli and B. subtilis. The adaptive capacity of recombinant strains depended on the number of plasmid copies in the cells. The introduction of recombinant bacteria into model ecosystems resulted in the generation of their variants with increased osmotolerance.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Lobova, T.I.; Yu Krylova, T.; Kargatova, T.V.; Yu Popova, L.; Pechurkin, N.S.

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