In enzymes, some of these amino acids form a site in the structure that catalyzes the enzymatic reaction. This site, called the active site of the enzyme, has amino acids that bind specifically to the substrate molecule, also called a ligand (Fig. 2). In a similar manner, certain sites in cell receptor proteins bind to specific ligand molecules that the receptor recognizes.
When did France's second empire end? The Second Empire ended with the swift and catastrophic defeat of  France in the Franco-Prussian war of 1870. The war was engineered  by Bismarck with the idea that Germany â¦would be united.This  included the capture by the Prussians of the Napoleon III. Then the  proclamation at Versailles of the German Empire, the loss to France  of Alsace and Lorraine, and the proclamation of the Third Republic.
The national assembly was formed by the representatives of the third estate because they wanted to revolt against the rights being given to the privileged section of the socie â¦ ty that is the clergy and nobility. 13 people found this useful.he Third Estate began the Revolution by declaring itself a National Assembly. The National Assembly moved to a tennis court â¦ and took the Oath of the Tennis Court which stated that they would not break up until a Constitution has been drafted.