( ( The ( folding ( challenge Proteins ) ) ) ( ( are ( composed ( of ( ( long chains ) ( of ( ( amino acids ) ( in ( a ( particular sequence ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ folding) (NN challenge) (NN Proteins)) (VP (VBP are) (VP (VBN composed) (PP (IN of) (NP (NP (JJ long) (NNS chains)) (PP (IN of) (NP (NP (JJ amino) (NNS acids)) (PP (IN in) (NP (DT a) (JJ particular) (NN sequence))))))))) (. .)))
The folding challenge Proteins are composed of long chains of amino acids in a particular sequence.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN protein)) (VP (VBZ is) (VP (VBN formed) (SBAR (WHADVP (WRB when)) (S (NP (JJ amino) (NNS acids)) (VP (VBP are) (VP (VBN linked) (ADVP (RB together)) (PP (IN in) (NP (DT a) (JJ long) (NN chain))))))))) (. .)))