Aminoacyl – t- RNA is required for all except ?: (A) Hydroxyproline, (B) Methionine, (C) Cystine, (D) Lysine
Answer is A. - Hydroxyproline is a derived amino acid and there is no t-RNA available to transport derived amino acids: hydroxyproline and hydroxylysine are two examples of derived amino acid for which there is no t-RNA available.