2013
Organic Co-solvents Affect Activity, Stability and Enantioselectivity of Haloalkane Dehalogenases
ŠTĚPÁNKOVÁ, Veronika; Jiří DAMBORSKÝ a Radka CHALOUPKOVÁZákladní údaje
Originální název
Organic Co-solvents Affect Activity, Stability and Enantioselectivity of Haloalkane Dehalogenases
Autoři
ŠTĚPÁNKOVÁ, Veronika; Jiří DAMBORSKÝ a Radka CHALOUPKOVÁ
Vydání
Biotechnology Journal, 2013, 1860-6768
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.708
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/13:00065823
Organizační jednotka
Přírodovědecká fakulta
UT WoS
Klíčová slova anglicky
Haloalkane Dehalogenases
Změněno: 29. 4. 2014 14:24, Ing. Zdeňka Rašková
Anotace
V originále
Haloalkane dehalogenases are microbial enzymes with a wide range of biotechnological applications. The use of organic co-solvents to solubilize their hydrophobic substrates is often necessary. In order to choose the most compatible co-solvent, the effects of fourteen co-solvents on activity, stability and enantioselectivity of three model enzymes, DbjA, DhaA and LinB, were evaluated. All co-solvents caused at high concentration loss of activity and conformational changes. The highest inactivation was induced by tetrahydrofuran, while more hydrophilic co-solvents, such as ethylene glycol and dimethyl sulfoxide, were more tolerated. The effects of co-solvents at low concentration were different for each enzyme-solvent pair. The increase in DbjA activity was induced by the majority of organic co-solvents tested, while activities of DhaA and LinB decreased at comparable concentrations of the same co-solvent. Moreover, high increase of DbjA enantioselectivity was observed. Ethylene glycol and 1,4-dioxane were shown to have the most positive impact on the enantioselectivity. The favourable influence of the co-solvents on both activity and enantioselectivity makes DbjA suitable for biocatalytic applications. This study represents the first investigation of the effects of organic co-solvents on the catalytic performance of haloalkane dehalogenases and will pave the way for their broader use in industrial processes.
Návaznosti
| ED0001/01/01, projekt VaV |
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| GAP207/12/0775, projekt VaV |
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| GAP503/12/0572, projekt VaV |
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| GA203/08/0114, projekt VaV |
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| IAA401630901, projekt VaV |
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