So let's take a look at this particular reaction. So we have the peptide bond between the carbon and nitrogen shown in purple. And what this describes is the hydrolysis of the peptide bond. So ultimately the water molecule acts as a nucleophile, this carbon acts as an electrophile. And what happens is this nucleophilically attacks the carbon and ultimately displaces that amide bond, the peptide bond. And notice that the arrow pointing this way is longer than the arrow pointing in reverse.