Model of RBOH activation by calcium ion binding and phosphorylation (IMAGE)

Tokyo University of Science

Model of RBOH activation by calcium ion binding and phosphorylation

Caption

The region highly conserved in land plants (yellow area) contains two Ca2+ binding sites (green area).​ Without Ca2+ binding, RBOH is not activated, and Ca2+ binding to the Ca2+ binding site is essential for reactive oxygen species (ROS) generation; phosphorylation of the two serine residues (in red) increases the binding affinity of Ca2+ (making Ca2+ easier to bind).​

Credit

Kazuyuki Kuchitsu from TUS

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