( Lysozyme ( ( ( attaches ( to ( bacterial ( cell wall ) ) ) ) ( by ( binding ( to ( a ( hexasaccharide unit ) ) ) ) ) ) ; ) )
(ROOT (S (NP (NNP Lysozyme)) (VP (VBZ attaches) (PP (TO to) (NP (JJ bacterial) (NN cell) (NN wall))) (PP (IN by) (NP (NP (VBG binding)) (PP (TO to) (NP (DT a) (JJ hexasaccharide) (NN unit)))))) (: ;)))
Lysozyme attaches to bacterial cell wall by binding to a hexasaccharide unit;
(ROOT (S (NP (DT A) (NN lysozyme)) (VP (VBZ destroys) (NP (NNS bacteria)) (PP (IN by) (S (VP (VBG digesting) (NP (PRP$ their) (NN cell) (NNS walls)))))) (. .)))