| Autor: |
Ashleigh Burke, William Birmingham, Ying Zhuo, Bruna Zuculoto da Costa, Rebecca Crawshaw, Thomas Thorpe, Ian Rowles, James Finnigan, Simon J. Charnock, Sarah Lovelock, Nicholas Turner, Anthony Green |
| Rok vydání: |
2021 |
| Předmět: |
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| DOI: |
10.26434/chemrxiv.13721692 |
| Popis: |
Herein we report the conversion of cytidine 2 to N-hydroxycytidine 7 catalysed by cytidine deaminase (CD). The wild-type enzyme operates efficiently at high sustrate loadings and hydroxylamine concentrations to favor N-hydroxy-cytidine formation over uridine. Although the wild-type enzyme demonstrated good activity, we were able to further enhance the ratio of N-hydroxycytidine to uridine produced through directed evolution of CD. In particular, a T123G mutation close to the active site dramatically reduces cytidine hydrolysis activity whilst preserving desired amination activty. The approach reported provides a new route to a key intermediate for the COVID-19 experimental drug Molnupiravir 1. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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