( There ( ( are ( ( two ( different types ) ) ( of ( polypeptide chains ) ) ) ) ; ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (JJ different) (NNS types)) (PP (IN of) (NP (JJ polypeptide) (NNS chains))))) (: ;)))
There are two different types of polypeptide chains;
(ROOT (S (NP (NNP Insulin)) (VP (VBZ is) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (CD two) (JJ polypeptide) (NNS chains))))) (. .)))