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Constrained Bonding Environment in the Michaelis Complex of Trypanosoma cruzi Uridine Phosphorylase

The transition state for the Trypanosoma cruzi uridine phosphorylase (TcUP) reaction has an expanded S(N)2 character. We used binding isotope effects (BIE’s) to probe uridine distortion in the complex with TcUP and sulfate to mimic the Michaelis complex. Inverse 1′-(3)H and 5′-(3)H BIE’s indicate a...

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Detalhes bibliográficos
Main Authors: Silva, Rafael G., Kipp, D. Randal, Schramm, Vern L.
Formato: Artigo
Idioma:Inglês
Publicado em: 2012
Assuntos:
Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC3448798/
https://ncbi.nlm.nih.gov/pubmed/22870934
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1021/bi300914q
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