2017
Ancestral Haloalkane Dehalogenases Show Robustness and Unique Substrate Specificity
BABKOVÁ, Petra, Eva ŠEBESTOVÁ, Jan BREZOVSKÝ, Radka CHALOUPKOVÁ, Jiří DAMBORSKÝ et. al.Základní údaje
Originální název
Ancestral Haloalkane Dehalogenases Show Robustness and Unique Substrate Specificity
Autoři
BABKOVÁ, Petra (203 Česká republika, domácí), Eva ŠEBESTOVÁ (203 Česká republika, domácí), Jan BREZOVSKÝ (203 Česká republika, domácí), Radka CHALOUPKOVÁ (203 Česká republika, domácí) a Jiří DAMBORSKÝ (203 Česká republika, garant, domácí)
Vydání
CHEMBIOCHEM, 2017, 1439-4227
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.774
Kód RIV
RIV/00216224:14310/17:00095408
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000405726100015
Klíčová slova anglicky
ancestral sequence reconstruction; haloalkane dehalogenase; protein engineering; robustness; substrate specificity
Změněno: 28. 3. 2018 15:36, Ing. Nicole Zrilić
Anotace
V originále
Ancestral sequence reconstruction (ASR) represents a powerful approach for empirical testing structure-function relationships of diverse proteins. We employed ASR to predict sequences of five ancestral haloalkane dehalogenases (HLDs) from the HLD-II subfamily. Genes encoding the inferred ancestral sequences were synthesized and expressed in Escherichia coli, and the resurrected ancestral enzymes (AncHLD1–5) were experimentally characterized. Strikingly, the ancestral HLDs exhibited significantly enhanced thermodynamic stability compared to extant enzymes (DTm up to 24 8C), as well as higher specific activities with preference for short multi-substituted halogenated substrates. Moreover, multivariate statistical analysis revealed a shift in the substrate specificity profiles of AncHLD1 and AncHLD2. This is extremely difficult to achieve by rational protein engineering. The study highlights that ASR is an efficient approach for the development of novel biocatalysts and robust templates for directed evolution.
Návaznosti
GA16-06096S, projekt VaV |
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GA16-24223S, projekt VaV |
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LM2015047, projekt VaV |
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LM2015051, projekt VaV |
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LM2015055, projekt VaV |
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LO1214, projekt VaV |
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