isoleucine leucine lysine methionine phenylalanine proline serine thereonine thyroxine tryptophane tyrosine and valine
-hydroxylysine -hydroxyproline
try to make alanine argine asparagine aspartic acid cysteine cystine -3,5-dibromotyrosine -3,5-diiodotyrosine -glutamic acid -glutamine glicine -histidene
try to make sistein, arginine