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.
He also demanded that voting at the Estates General be conducted by head (that is, by a tally of individual deputies) rather than by order (the Three Estates voting in blocs). This shaped the demands of the Third Estate at the Estates General, culminating in the Third Estate breaking away to form the National Assembly.s for Emmanuel Sieyes, sieyÃ¨s the impact Of what is The Third? estate brought him considerable respect and. Popularity In march 1789 he was elected to represent The Third estate at The-Estates â general Despite sieyes sieyÃ¨s still belonging to the clergy and having no claim as, an advocate debater or. public speaker