2021
Description of Transport Tunnel in Haloalkane Dehalogenase Variant LinB D147C+L177C from Sphingobium japonicum
IERMAK, Iuliia, Oksana DEGTJARIK, Petra HAVLICKOVA, Michal KUTY, Radka CHALOUPKOVÁ et. al.Základní údaje
Originální název
Description of Transport Tunnel in Haloalkane Dehalogenase Variant LinB D147C+L177C from Sphingobium japonicum
Autoři
IERMAK, Iuliia (276 Německo), Oksana DEGTJARIK (112 Bělorusko), Petra HAVLICKOVA (203 Česká republika), Michal KUTY (203 Česká republika), Radka CHALOUPKOVÁ (203 Česká republika, domácí), Jiří DAMBORSKÝ (203 Česká republika, garant, domácí), Tanyana PRUDNIKOVA (112 Bělorusko) a Ivana KUTA SMATANOVA (203 Česká republika)
Vydání
Catalysts, Basel, MDPI, 2021, 2073-4344
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10403 Physical chemistry
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.501
Kód RIV
RIV/00216224:14310/21:00119186
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000609997300001
Klíčová slova anglicky
bacterial enzyme; haloalkane dehalogenase; mutant form; crystallization; tertiary structure; disulfide bond; protein engineering; molecular dynamics; access tunnel; substrate specificity
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 16. 2. 2023 12:37, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
The activity of enzymes with active sites buried inside their protein core highly depends on the efficient transport of substrates and products between the active site and the bulk solvent. The engineering of access tunnels in order to increase or decrease catalytic activity and specificity in a rational way is a challenging task. Here, we describe a combined experimental and computational approach to characterize the structural basis of altered activity in the haloalkane dehalogenase LinB D147C+L177C variant. While the overall protein fold is similar to the wild type enzyme and the other LinB variants, the access tunnels have been altered by introduced cysteines that were expected to form a disulfide bond. Surprisingly, the mutations have allowed several conformations of the amino acid chain in their vicinity, interfering with the structural analysis of the mutant by X-ray crystallography. The duration required for the growing of protein crystals changed from days to 1.5 years by introducing the substitutions. The haloalkane dehalogenase LinB D147C+L177C variant crystal structure was solved to 1.15 angstrom resolution, characterized and deposited to Protein Data Bank under PDB ID 6s06.
Návaznosti
GA17-24321S, projekt VaV |
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LM2015047, projekt VaV |
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LM2018121, projekt VaV |
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