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.
Before their alliance, the three titans had been warring one another (Lepidus and Antony against Octavian) throughout Italy. One month before the Second Triumvirate was formed, though, they met and began making plans to join forces to rule over Rome. One month later, the Triumvirate was officially formed as a legal entity with the establishment of the (in English) âTriumvirs for Confirming the Republic with Consular Powerâ. Once established, the three rulers had near absolute power over Rome, if not in law, in fact. Only one real check was put in their path.