Autophosphorylation of the N-terminal serine residues, S12 and S13, of CAMK4 is required for full activation after Ca2+/calmodulin binding and phosphorylation of the Ca2+/calmodulin-bound enzyme on threonine residue T200 by a Ca2+/calmodulin-dependent protein kinase kinase (CAMKK1 or CAMKK2) (Chatila et al. 1996).
Chatila, T, Anderson, KA, Ho, N, Means, AR
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