2021
Computational Enzyme Stabilization Can Affect Folding Energy Landscapes and Lead to Catalytically Enhanced Domain-Swapped Dimers
MARKOVÁ, Klára; Antonín KUNKA; Klaudia CHMELOVÁ; Martin HAVLÁSEK; Petra BABKOVÁ et al.Základní údaje
Originální název
Computational Enzyme Stabilization Can Affect Folding Energy Landscapes and Lead to Catalytically Enhanced Domain-Swapped Dimers
Autoři
MARKOVÁ, Klára; Antonín KUNKA; Klaudia CHMELOVÁ; Martin HAVLÁSEK; Petra BABKOVÁ; Sérgio Manuel MARQUES; Michal VAŠINA; Joan PLANAS IGLESIAS; Radka CHALOUPKOVÁ; David BEDNÁŘ; Zbyněk PROKOP; Jiří DAMBORSKÝ a Martin MAREK
Vydání
ACS Catalysis, WASHINGTON, AMER CHEMICAL SOC, 2021, 2155-5435
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10403 Physical chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 13.700
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/21:00124052
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
protein folding; protein design; alpha/beta-hydrolase; haloalkane dehalogenase; domain swapping; energy landscape; oligonicrization; catalytic efficiency; substrate inhibition
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 5. 6. 2025 20:44, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
The functionality of an enzyme depends on its unique three-dimensional structure, which is a result of the folding process when the nascent polypeptide follows a funnel-like energy landscape to reach a global energy minimum. Computer-encoded algorithms are increasingly employed to stabilize native proteins for use in research and biotechnology applications. Here, we reveal a unique example where the computational stabilization of a monomeric alpha/beta-hydrolase enzyme (T-m = 73.5 degrees C; Delta T-m > 23 degrees C) affected the protein folding energy landscape. The introduction of eleven single-point stabilizing mutations based on force field calculations and evolutionary analysis yielded soluble domain-swapped intermediates trapped in local energy minima. Crystallographic structures revealed that these stabilizing mutations might (i) activate cryptic hinge-loop regions and (ii) establish secondary interfaces, where they make extensive noncovalent interactions between the intertwined protomers. The existence of domain-swapped dimers in a solution is further confirmed experimentally by data obtained from small-angle X-ray scattering (SAXS) and cross-linking mass spectrometry. Unfolding experiments showed that the domain-swapped dimers can be irreversibly converted into native-like monomers, suggesting that the domain swapping occurs exclusively in vivo. Crucially, the swapped-dimers exhibited advantageous catalytic properties such as an increased catalytic rate and elimination of substrate inhibition. These findings provide additional enzyme engineering avenues for next-generation biocatalysts.
Návaznosti
| EF17_043/0009632, projekt VaV |
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| LM2015047, projekt VaV |
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| LM2018127, projekt VaV |
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| LM2018140, projekt VaV |
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| MUNI/H/1561/2018, interní kód MU |
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| 792772, interní kód MU |
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| 814418, interní kód MU |
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| 857560, interní kód MU (Kód CEP: EF17_043/0009632) |
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| 90121, velká výzkumná infrastruktura |
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