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A Master Switch Couples Mg(2+)-Assisted Catalysis to Domain Motion in B. stearothermophilus Tryptophanyl-tRNA Synthetase

We demonstrate how Tryptophanyl-tRNA synthetase (TrpRS) uses conformation-dependent Mg(2+) activation to couple catalysis of tryptophan activation to specific, functional domain movements. Rate acceleration by Mg(2+) requires ~ -6.0 kcal/mole in protein•Mg(2+) interaction energy, none of which arise...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Weinreb, Violetta, Li, Li, Carter, Charles W.
Format: Artigo
Sprache:Inglês
Veröffentlicht: 2012
Schlagworte:
Online Zugang:https://ncbi.nlm.nih.gov/pmc/articles/PMC3259537/
https://ncbi.nlm.nih.gov/pubmed/22244762
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1016/j.str.2011.10.020
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