All are essential amino acid except
The essential amino acids are Isoleucine, Leucine Threonine Lysine, Methionine, Phenylalanine, Tryptophan, and Valine.Ref: DM Vasudevan - Textbook of Biochemistry for Medical Students, 7th edition, page no: 27
Phenylalanine
Lysine
Leucine
Glycine
Metabolism of protein and amino acid