Alexandra Daddario is American.
In enzymology , a diphthine-ammonia ligase -LRB- , diphthamide synthase , diphthamide synthetase -RRB- is an enzyme that catalyzes the chemical reaction. enzymology. enzymology. enzyme. enzyme. catalyzes. catalysis. chemical reaction. chemical reaction. diphthine. diphthine. diphthamide. diphthamide. ligase. ligase. ATP + diphthine + NH3 ADP + phosphate + diphthamide. diphthine. diphthine. phosphate. phosphate. diphthamide. diphthamide. ATP. adenosine triphosphate. ADP. adenosine diphosphate. The 3 substrates of this enzyme are ATP , diphthine , and NH3 , whereas its 3 products are ADP , phosphate , and diphthamide .. enzyme. enzyme. diphthine. diphthine. phosphate. phosphate. diphthamide. diphthamide. substrates. substrate ( biochemistry ). ATP. adenosine triphosphate. products. product ( chemistry ). ADP. adenosine diphosphate. This enzyme belongs to the family of ligases , specifically those forming carbon-nitrogen bonds as acid-D-amino-acid ligases -LRB- peptide synthases -RRB- .. enzyme. enzyme. The systematic name of this enzyme class is diphthine  : ammonia ligase -LRB- ADP-forming -RRB- .. enzyme. enzyme. diphthine. diphthine. ADP. adenosine diphosphate. ligase. ligase. systematic name. List of enzymes. Other names in common use include diphthamide synthase , and diphthamide synthetase .. diphthamide. diphthamide