Molecular Biology: Sticky End in Protein Synthesis
It's not clear what general level of accuracy is required in translating the genetic code. But the protective role of proof-reading is evident from a case in which a small mistake has a catastrophic effect.
Roy, H. and Ibba, M. (2006) Molecular biology: Sticky end in protein synthesis. Nature 443, 41-42. https://doi.org/10.1038/nature05002
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