( ( Many ( amino acids ) ) ( ( ( bonded together ) ( form ( ( a ( polypeptide chain ) ) ( which ( becomes ( a protein ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Many) (JJ amino) (NNS acids)) (VP (MD bonded) (ADVP (RB together)) (VP (VB form) (NP (NP (DT a) (JJ polypeptide) (NN chain)) (SBAR (WHNP (WDT which)) (S (VP (VBZ becomes) (NP (DT a) (NN protein)))))))) (. .)))
Many amino acids bonded together form a polypeptide chain which becomes a protein.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (JJ amino) (NNS acids)) (VP (VBZ bind) (ADVP (RB together))))) (, ,) (NP (PRP they)) (VP (VBP form) (SBAR (S (NP (DT a) (JJ long) (NN chain)) (VP (VBD called) (NP (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (NN polypeptide)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (NP (DT an) (JJ essential) (NN component)) (PP (IN of) (NP (NN protein)))))))))))) (. .)))