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Wyszukujesz frazę "whole-cell biocatalysts" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Use of the chemical permeabilization process in yeast cells: production of high-activity whole cell biocatalysts
Autorzy:
Trawczynska, I.
Powiązania:
https://bibliotekanauki.pl/articles/2097138.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
permeabilization
biocatalyst
yeast cells
microorganisms
Opis:
Yeast cells are popular microorganisms for use in various bioprocesses because of their ability to produce various enzymes. They are also known for their low price. However, the activity of these biocatalysts is limited by cell membrane diffusion. One of the possible solutions to this problem is permeabilization, which makes cell walls and membranes of microorganisms more permeable to allow for easier reagent diffusion, while also maintaining properties of the cells, such as their structure and enzymatic activity. The reusability of permeabilized baker’s yeast cells is a major asset that allows them to be successfully used in biotransformation processes. Because of extensive research on this process, numerous procedures have been developed regarding the production of highly active biocatalysts in the form of permeabilized cells. The most commonly used technique is chemical permeabilization. Its effectiveness is based on the activity of various intracellular enzymes: one enzyme or several enzymes simultaneously. Multiple chemical substances, mostly organic solvents and detergents, were analyzed to determine their effectiveness as permeabilizing agents. This review provides a state-of-the-science analysis of substances used as permeabilizing agents for yeast permeabilization
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 3; 239-252
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biotransformacje z udziałem genetycznie modyfikowanych drożdży Saccharomyces cerevisiae
Biotransformations with genetically modified bakers yeast Saccharomyces cerevisiae
Autorzy:
Białecka-Florjańczyk, E.
Zamojska, W.
Kapturowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/171849.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
Saccharomyces cerevisiae
biotransformacja
biokatalizatoy komórkowy
inżynieria genetyczna
biotransformations
whole-cell biocatalysts
genetic engineering
Opis:
Baker’s yeast Saccharomyces cerevisiae is quite commonly applied as a wholecell biocatalysts in biotransformations – reactions based on enzymatic transformations of chemical compounds. Yeast cells are easy in cultivation and use. They are usually used to catalyze such reactions as bioreduction or hydrolysis. The full sequencing of its genome accompanied with achievements of genetic engineering allowed to design new yeast strains characterized by high conversion yield and reaction selectivity. Genetically modified cells of Saccharomyces cerevisiae catalyze biotransformations, which lead to chiral building blocks important in pharmaceutical industry (especially those obtained by reduction of á- and â -oxoesters). „Designer yeast” is a new catalyst for Baeyer–Villiger oxidation. Recombinant yeast lipases have been discussed as useful means in biodiesel production because the microbiological method of producing of this kind of fuel has many advantages. There is a growing interest in application of modified yeast in biotransformation reactions. Modern directions to improve catalytic abilities of baker’s yeast include: the use of surface display technology of enzymes, optimization or increase in availability of cofactor required for bioreduction reactions or gene knock-out, which eliminates the activity of enzymes with conflicting and unwanted stereoselectivities. Commonly used technique is also overexpression of the desired protein or expression of heterologous enzymes in yeast cells.
Źródło:
Wiadomości Chemiczne; 2011, 65, 1-2; 93-110
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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