Aminoacyl tRNA synthetase is required for all except:
Some proteins contain additional amino acids that arise due to post-translational modification of existing amino acyl residues. Examples: Vitamin C mediated hydroxylation of proline and peptidyl lysine to 4-hydroxyproline and 5-hydroxylysine Vitamin K mediated g-carboxylation of glutamate Methylation Formylation Acetylation Prenylation (addition of fatty acid residues) Glypiation (addition of Glycosyl PI anchor) Phosphorylation Therefore Aminoacyl tRNA synthetase is not required by these.
Lysine
Cysteine
Methionine
Hydroxyproline
Translation