Selent et al., Biochemistry 1992
:
We suggest on the basis of structural information, mutagenesis data, and analogies with other nucleases that Asp74 and Asp90 might be involved in Mg2+ binding and/or catalysis and that Lys92 probably stabilizes the pentacovalent phosphorus in the transition state
Ostrowski et al., J Plant Physiol 2008
:
IAA-Asp formation was dependent on ATP and Mg2+ , and was linear during a 60 min period