This binding interferes with aerobic metabolism and efficient adenosine triphosphate synthesis. Yeast tRNA kinase then phosphorylates the 5'-hydroxyl group using adenosine triphosphate. Thus, these cells rely on anaerobic metabolic processes such as glycolysis for ATP (adenosine triphosphate). This leads to a decreased level of intracellular adenosine triphosphate (ATP). Inosine monophosphate is converted to adenosine monophosphate in two steps. Fumarate is then cleaved off forming adenosine monophosphate. Many anabolic processes are powered by the cleavage of adenosine triphosphate (ATP). This receptor is responsive to both adenosine and uridine nucleotides. Its derivatives include the energy carriers adenosine mono-, di-, and triphosphate. Chemically, it mimics the nucleoside adenosine. ADA deficiency is due to a lack of the enzyme adenosine deaminase. Adenine forms adenosine, a nucleoside, when attached to ribose, and deoxyadenosine when attached to deoxyribose. These are examples of modified adenosine or guanosine. Benzodiazepines also function as weak adenosine reuptake inhibitors. The gene encodes a protein which is one of several receptor subtypes for adenosine.