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The modification of a lysine residue in a protein to produce (2S)-2-amino-6-([(3S)-3,6-diaminohexanoyl]amino)hexanoic acid, and the subsequent hydroxylation of the modified lysine residue. This modification is observed in, and is probably unique to, the prokaryotic translation elongation factor P (EF-P). [GOC:curators, GOC:imk, GOC:mah, PMID:20729861, PMID:22706199, RESID:AA0530, RESID:AA0531]
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