Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations
Abstract CAL−B (Lipase B from Candida antarctica ) catalyzed aza‐Michael addition of a set of aniline compounds with acrylates under mild conditions was described. A systematic study allowed to determine the appropriate solvent, enzyme loading, reaction temperature and time. In order to speculate an...
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crwiley:10.1002/slct.201900112 2024-09-15T17:43:40+00:00 Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations Gu, Bo E Hu, Zu− Yang, Zeng‐Jie Li, Jun Zhou, Zi‐Wen Wang, Na Yu, Xiao‐Qi National Natural Science Foundation of China 2019 http://dx.doi.org/10.1002/slct.201900112 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fslct.201900112 https://onlinelibrary.wiley.com/doi/pdf/10.1002/slct.201900112 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/slct.201900112 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor ChemistrySelect volume 4, issue 13, page 3848-3854 ISSN 2365-6549 2365-6549 journal-article 2019 crwiley https://doi.org/10.1002/slct.201900112 2024-08-06T04:13:48Z Abstract CAL−B (Lipase B from Candida antarctica ) catalyzed aza‐Michael addition of a set of aniline compounds with acrylates under mild conditions was described. A systematic study allowed to determine the appropriate solvent, enzyme loading, reaction temperature and time. In order to speculate and verify its mechanism, the wild‐type and three mutants (S105 A, H224 A and I189 A) of CAL−B were expressed. Some control experiments demonstrated the active site was responsible for the enzymatic process, in which Ser105 and His224 played a crucial role. Besides, the mutation of Ile189 also affected its activity a lot. Based on these results, a docking experiment was performed to speculate the mechanism: the oxyanion hole (Thr40 and Gln106) of the active site activated the acrylates and stabilized the transition states. The Ile189 residues, as an important part of active cavity, could form a strong hydrophobic interaction with substrates. And the Ser105 and His224 residues were responsible for proton transfer during the catalytic process. This would help to understand the promiscuity of CAL−B, and provide ideas to design novel enzyme to improve the efficiency of its promiscuity. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library ChemistrySelect 4 13 3848 3854 |
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English |
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Abstract CAL−B (Lipase B from Candida antarctica ) catalyzed aza‐Michael addition of a set of aniline compounds with acrylates under mild conditions was described. A systematic study allowed to determine the appropriate solvent, enzyme loading, reaction temperature and time. In order to speculate and verify its mechanism, the wild‐type and three mutants (S105 A, H224 A and I189 A) of CAL−B were expressed. Some control experiments demonstrated the active site was responsible for the enzymatic process, in which Ser105 and His224 played a crucial role. Besides, the mutation of Ile189 also affected its activity a lot. Based on these results, a docking experiment was performed to speculate the mechanism: the oxyanion hole (Thr40 and Gln106) of the active site activated the acrylates and stabilized the transition states. The Ile189 residues, as an important part of active cavity, could form a strong hydrophobic interaction with substrates. And the Ser105 and His224 residues were responsible for proton transfer during the catalytic process. This would help to understand the promiscuity of CAL−B, and provide ideas to design novel enzyme to improve the efficiency of its promiscuity. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Gu, Bo E Hu, Zu− Yang, Zeng‐Jie Li, Jun Zhou, Zi‐Wen Wang, Na Yu, Xiao‐Qi |
spellingShingle |
Gu, Bo E Hu, Zu− Yang, Zeng‐Jie Li, Jun Zhou, Zi‐Wen Wang, Na Yu, Xiao‐Qi Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations |
author_facet |
Gu, Bo E Hu, Zu− Yang, Zeng‐Jie Li, Jun Zhou, Zi‐Wen Wang, Na Yu, Xiao‐Qi |
author_sort |
Gu, Bo |
title |
Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations |
title_short |
Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations |
title_full |
Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations |
title_fullStr |
Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations |
title_full_unstemmed |
Probing the Mechanism of CAL‐B‐Catalyzed aza‐Michael Addition of Aniline Compounds with Acrylates Using Mutation and Molecular Docking Simulations |
title_sort |
probing the mechanism of cal‐b‐catalyzed aza‐michael addition of aniline compounds with acrylates using mutation and molecular docking simulations |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/slct.201900112 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fslct.201900112 https://onlinelibrary.wiley.com/doi/pdf/10.1002/slct.201900112 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/slct.201900112 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
ChemistrySelect volume 4, issue 13, page 3848-3854 ISSN 2365-6549 2365-6549 |
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http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/slct.201900112 |
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3848 |
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1810490757594742784 |