This Day in History: 06/19/1953 - Rosenbergs executed. In This Day in History video clip: On this day in 1953, Julius and Ethel Rosenberg, who were convicted of conspiring to pass U.S. atomic secrets to the Soviets, are executed at Sing Sing Prison in Ossining, New York. Both refused to admit any wrongdoing and proclaimed their innocence right up to the time of their deaths, by the electric chair.
The bond linking a phosphate group to a sugar of a another molecule is called a phosphodiester bond.
The two phosphate groups of ADP are added in series to the 5â carbon of the sugar backbone, while the adenosine molecule attaches to the 1â carbon. The two phosphates in ADP can be correlated with ATP and AMP. ATP consists of three phosphate groups attached in series to the 5â carbon location, whereas ADP contains two phosphate groups attached to the 5â position, and AMP contains only one phosphate group attached at the 5â position.