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Updated: May 21, 2026

Toeprinting Analysis of Translation Initiation Complex Formation on Mammalian mRNAs
Published on: May 10, 2018
Lys34 of translation elongation factor EF-P is hydroxylated by YfcM
Lauri Peil1, Agata L Starosta, Kai Virumäe
1Institute of Technology, University of Tartu, Tartu, Estonia.
Abstract:
Lys34 of the conserved translation elongation factor P (EF-P) is post-translationally lysinylated by YjeK and YjeA--a modification that is critical for bacterial virulence. Here we show that the currently accepted Escherichia coli EF-P modification pathway is incomplete and lacks a final hydroxylation step mediated by YfcM, an enzyme distinct from deoxyhypusine hydroxylase that catalyzes the final maturation step of eukaryotic initiation factor 5A, the eukaryotic EF-P homolog.
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