2018
Impact of the access tunnel engineering on catalysis is strictly ligand-specific
KAUSHIK, Shubhangi; Sérgio Manuel MARQUES; Prashant Kumar KHIRSARIYA; Kamil PARUCH; Lenka LIBICHOVÁ et al.Základní údaje
Originální název
Impact of the access tunnel engineering on catalysis is strictly ligand-specific
Autoři
KAUSHIK, Shubhangi; Sérgio Manuel MARQUES; Prashant Kumar KHIRSARIYA; Kamil PARUCH; Lenka LIBICHOVÁ; Jan BREZOVSKÝ; Zbyněk PROKOP; Radka CHALOUPKOVÁ a Jiří DAMBORSKÝ
Vydání
the FEBS Journal, 2018, 1742-464X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10401 Organic chemistry
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.739
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/18:00100915
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
de novo protein design; enzyme catalysis;enzyme tunnels engineering; haloalkanedehalogenases; protein engineering
Štítky
Příznaky
Mezinárodní význam
Změněno: 30. 4. 2019 08:55, Mgr. Tereza Miškechová
Anotace
V originále
The traditional way of rationally engineering enzymes to change their biocatalytic properties utilizes the modifications of their active sites. Another emerging approach is the engineering of structural features involved in the exchange of ligands between buried active sites and the surrounding solvent. However, surprisingly little is known about the effects of mutations that alter the access tunnels on the enzymes’ catalytic properties, and how these tunnels should be redesigned to allow fast passage of cognate substrates and products. Thus, we have systematically studied the effects of single-point mutations in a tunnel-lining residue of a haloalkane dehalogenase on the binding kinetics and catalytic conversion of both linear and branched haloalkanes. The hotspot residue Y176 was identified using computer simulations and randomized through saturation mutagenesis, and the resulting variants were screened for shifts in binding rates. Strikingly, opposite effects of the substituted residues on the catalytic efficiency toward linear and branched substrates were observed, which was found to be due to substrate-specific requirements in the critical steps of the respective catalytic cycles. We conclude that not only the catalytic sites, but also the access pathways must be tailored specifically for each individual ligand, which is a new paradigm in protein engineering and de novo protein design. A rational approach is proposed here to address more effectively the task of designing ligand-specific tunnels using computational tools.
Návaznosti
| EE2.3.30.0037, projekt VaV |
| ||
| GA16-24223S, projekt VaV |
| ||
| GA17-24321S, projekt VaV |
| ||
| LM2015047, projekt VaV |
| ||
| LM2015051, projekt VaV |
| ||
| LM2015055, projekt VaV |
| ||
| LM2015063, projekt VaV |
| ||
| LO1214, projekt VaV |
| ||
| MUNI/M/1888/2014, interní kód MU |
| ||
| 4SGA8519, interní kód MU |
|