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Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity

New-to-nature enzymes have emerged as powerful catalysts in recent years for streamlining various stereoselective organic transformations. While synthetic strategies employing engineered enzymes have witnessed proliferating success, there is limited clarity on the mechanistic front and more so when...

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Detalles Bibliográficos
Autores principales: Chatterjee, Ritwika, Jindal, Garima
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10445471/
https://www.ncbi.nlm.nih.gov/pubmed/37621422
http://dx.doi.org/10.1039/d3sc02788k
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author Chatterjee, Ritwika
Jindal, Garima
author_facet Chatterjee, Ritwika
Jindal, Garima
author_sort Chatterjee, Ritwika
collection PubMed
description New-to-nature enzymes have emerged as powerful catalysts in recent years for streamlining various stereoselective organic transformations. While synthetic strategies employing engineered enzymes have witnessed proliferating success, there is limited clarity on the mechanistic front and more so when considering molecular-level insights into the role of selected mutations, dramatically escalating catalytic competency and selectivity. We have investigated the mechanism and correlation between mutations and exquisite stereoselectivity of a lactone carbene insertion into the C(sp(3))–H bond of substituted aniline, catalyzed by two mutants of a cytochrome P450 variant, “P411” (engineered through directed evolution) in which the axial cysteine has been mutated to serine, utilizing various computational tools. The pivotal role of S264 and L/R328 mutations in the active site has been delineated computationally using two cluster models, thus rationalizing the enantiodivergence. This report provides much-needed insights into the origin of enantiodivergence, furnishing a mechanistic framework for understanding the anchoring effects of H-bond donor residues with the lactone ring. This study is expected to have important implications in the rational design of stereodivergent enzymes and toward successful in silico enzyme designing.
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spelling pubmed-104454712023-08-24 Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity Chatterjee, Ritwika Jindal, Garima Chem Sci Chemistry New-to-nature enzymes have emerged as powerful catalysts in recent years for streamlining various stereoselective organic transformations. While synthetic strategies employing engineered enzymes have witnessed proliferating success, there is limited clarity on the mechanistic front and more so when considering molecular-level insights into the role of selected mutations, dramatically escalating catalytic competency and selectivity. We have investigated the mechanism and correlation between mutations and exquisite stereoselectivity of a lactone carbene insertion into the C(sp(3))–H bond of substituted aniline, catalyzed by two mutants of a cytochrome P450 variant, “P411” (engineered through directed evolution) in which the axial cysteine has been mutated to serine, utilizing various computational tools. The pivotal role of S264 and L/R328 mutations in the active site has been delineated computationally using two cluster models, thus rationalizing the enantiodivergence. This report provides much-needed insights into the origin of enantiodivergence, furnishing a mechanistic framework for understanding the anchoring effects of H-bond donor residues with the lactone ring. This study is expected to have important implications in the rational design of stereodivergent enzymes and toward successful in silico enzyme designing. The Royal Society of Chemistry 2023-07-25 /pmc/articles/PMC10445471/ /pubmed/37621422 http://dx.doi.org/10.1039/d3sc02788k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Chatterjee, Ritwika
Jindal, Garima
Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity
title Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity
title_full Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity
title_fullStr Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity
title_full_unstemmed Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity
title_short Role of mutations in a chemoenzymatic enantiodivergent C(sp(3))–H insertion: exploring the mechanism and origin of stereoselectivity
title_sort role of mutations in a chemoenzymatic enantiodivergent c(sp(3))–h insertion: exploring the mechanism and origin of stereoselectivity
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10445471/
https://www.ncbi.nlm.nih.gov/pubmed/37621422
http://dx.doi.org/10.1039/d3sc02788k
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