[word=catalyze] [word=structural] [lemma=change] [lemma=within] □
[word=catalyze] [word=structural] [lemma=change] [lemma=within] [□]
[word=catalyze] [word=structural] [lemma=change] [lemma=within] □?
Isomerases catalyze structural change within one molecule , that is , isomerization reactions .