Where does the H2O molecule formed in Dehydration Synthesis go?

Dehydration Synthesis is the process in which two amino acids are joined by removing a hydrogen molecule from one, and an oxygen-hydrogen molecule from another, allowing the two amino acids to bond. That H2O molecule (Hydrogen+Oxygen+Hydrogen) is removed from the acids- where does it go? Because millions of Dehydration Syntheses take place, I would ume its important.