ATP kinetics for α2 homo- and hetero-oligomers.

The table shows the calulated S0.5 values for ATP of α2 homo-dimers and hetero-oligomers composed by: α2 and wild type β (MAT II); α2 and Y159F/K163A-β (mutant MAT II); and α2 and a ΔS16 β subunit (truncated MAT II). S0.5 refers to the concentration of substrate at which half the Vmax is achieved. The results shown are the mean ± SD of a minimum of three independent experiments carried out in triplicate and were considered significant only when p≤0.05 (*).