Engineering the protein dynamics of an ancestral luciferase

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Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.

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SCHENKMAYEROVÁ Andrea RANGEL PAMPLONA PIZARRO PINTO José Gaspar TOUL Martin MAREK Martin HERNYCHOVÁ Lenka PLANAS IGLESIAS Joan LIŠKOVÁ Veronika PLUSKAL Daniel VAŠINA Michal EMOND Stephane DÖRR Mark CHALOUPKOVÁ Radka BEDNÁŘ David PROKOP Zbyněk HOLLFELDER Florian BORNSCHEUER Uwe T. DAMBORSKÝ Jiří

Rok publikování 2021
Druh Článek v odborném periodiku
Časopis / Zdroj Nature Communications
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://doi.org/10.1038/s41467-021-23450-z
Doi http://dx.doi.org/10.1038/s41467-021-23450-z
Klíčová slova Enzymes; Hydrolases; Protein design; X-ray crystallography
Přiložené soubory
Popis Directed evolution commonly relies on point mutations but InDels frequently occur in evolution. Here the authors report a protein-engineering framework based on InDel mutagenesis and fragment transplantation resulting in greater catalysis and longer glow-type bioluminescence of the ancestral luciferase. Protein dynamics are often invoked in explanations of enzyme catalysis, but their design has proven elusive. Here we track the role of dynamics in evolution, starting from the evolvable and thermostable ancestral protein Anc(HLD-RLuc) which catalyses both dehalogenase and luciferase reactions. Insertion-deletion (InDel) backbone mutagenesis of Anc(HLD-RLuc) challenged the scaffold dynamics. Screening for both activities reveals InDel mutations localized in three distinct regions that lead to altered protein dynamics (based on crystallographic B-factors, hydrogen exchange, and molecular dynamics simulations). An anisotropic network model highlights the importance of the conformational flexibility of a loop-helix fragment of Renilla luciferases for ligand binding. Transplantation of this dynamic fragment leads to lower product inhibition and highly stable glow-type bioluminescence. The success of our approach suggests that a strategy comprising (i) constructing a stable and evolvable template, (ii) mapping functional regions by backbone mutagenesis, and (iii) transplantation of dynamic features, can lead to functionally innovative proteins.
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