21. Analysis of glutamine synthetase sequence has been suggested for phylogenetic analysis of the Actinobacteria. 22. For example, " Helicobacter pylori " has glutaminyl tRNA synthetase missing. 23. A specific tRNA synthetase is responsible for recognizing and charging a particular amino acid. 24. This is then channeled through the interior of the enzyme to the synthetase domain. 25. AIR synthetase catalyzes the transfer of the oxygen of the formyl group to phosphate. 26. YgfA protein which is a putative methenyltetrahydrofolate synthetase . 27. Other names in common use include galactinol-raffinose galactosyltransferase, and stachyose synthetase . 28. Deficiency of gamma-glutamylcysteine synthetase in human is associated with enzymopathic hemolytic anemia. 29. The combination of KLF15 and acetyl-CoA synthetase 2 ( AceCS2 ) promoter. 30. The second focuses on directly inhibiting estrogen production by inhibiting the estrogen synthetase aromatase.