2.3.1.8 pyruvate - 487532 2.3.1.8 pyruvate 156% of activation at 5 mM 720217 2.3.1.8 NH4Cl 3fold stimulation at 40 mM. No significant increase in activity above 40 mM 674792 2.3.1.8 1,3-dimercaptopropanol activates at 0.01 M 487515 2.3.1.8 cysteine activates at 0.01 M 487515 2.3.1.8 hydrogen sulfide activates at 0.01 M 487515 2.3.1.8 thiolglycolic acid activates at 0.01 M 487515 2.3.1.8 PPIB cytoplasmic cytophilin, interaction with phosphate acetyltransferase leads to enhanced activity and alteration in Km value. PPIase activity is not essential for these interactions, as PPIB F99A active site mutant still interacts with phosphate acetyltransferase, but PPIB activity is responsible for the observed phosphate acetyltransferase activity enhancement 720425 2.3.1.8 pyruvate isoform PtaII has 133% activity in the presence of 0.05 mM pyruvate 736033 2.3.1.8 NH4Cl maximal stimulation at 40 mM, 3fold 674792