Dissociation of Ca2+/CaM from activated CAMK2 allows subsequent phosphorylations at Thr 305 and Thr 306. These phosphorylations, which occur within the CaM binding site, prevent reassociation of Ca2+/CaM (reviewed in Stratton et al, 2013).
Schulman, H, Stratton, MM, Kuriyan, J, Chao, LH
protein serine/threonine kinase activity of p-T286 CAMK2:CaM [cytosol]
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