( Proteins ( ( are ( formed ( by ( ( ( joining ( the ( amino acids ) ) ) ( into ( ( ( ( ( a ( ( long stretched ) chain ) ) , ) ( the ( protein sequence ) ) ) , ) ( ( a translation ) ( of ( the genes ) ) ) ) ) ) ( into ( ( a ( 20-letter alphabet ) ) ( of ( amino acids ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNPS Proteins)) (VP (VBP are) (VP (VBN formed) (PP (IN by) (S (VP (VBG joining) (NP (DT the) (JJ amino) (NNS acids)) (PP (IN into) (NP (NP (DT a) (ADJP (RB long) (JJ stretched)) (NN chain)) (, ,) (NP (DT the) (NN protein) (NN sequence)) (, ,) (NP (NP (DT a) (NN translation)) (PP (IN of) (NP (DT the) (NNS genes)))))) (PP (IN into) (NP (NP (DT a) (JJ 20-letter) (NN alphabet)) (PP (IN of) (NP (JJ amino) (NNS acids)))))))))) (. .)))
Proteins are formed by joining the amino acids into a long stretched chain, the protein sequence, a translation of the genes into a 20-letter alphabet of amino acids.
(ROOT (S (NP (NNPS Proteins)) (VP (VBP are) (NP (NP (JJ long) (NNS chains)) (PP (IN of) (NP (JJ amino) (NNS acids))))) (. .)))