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Chemical Mutagenesis of Vaccinia DNA Topoisomerase Lysine-167 Provides Insights to Catalysis of DNA Transesterification
Vaccinia DNA topoisomerase IB (TopIB) relaxes supercoils by forming and resealing a covalent DNA-(3′-phosphotyrosyl(274))-enzyme intermediate. Conserved active site side chains promote the attack of Tyr274 on the scissile phosphodiester via transition state stabilization and general acid catalysis....
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| Main Authors: | , |
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| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
2013
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| Fag: | |
| Online adgang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC3619185/ https://ncbi.nlm.nih.gov/pubmed/23317114 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1021/bi301643h |
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