Autocamtide-3 acetate, a 13-amino-acid peptide containing Thr287, is a selective CaMKII (Ca2+/calmodulin-dependent kinase II) (CaMK) substrate.
20 μM Autocamtide-3 acetate (H2N-Lys-Lys-Ala-Leu-His-Arg-Gln-Glu-Thr-Val-Asp-Ala-Leu-COOH), and 5 μL of CaMKII is used in a 50 μL kinase-assay reaction. Autocamtide-3 acetate shows catalytic activity[1].
References:
[1]. Mehtap Yilmaz, et al. Phosphorylation at Ser²⁶ in the ATP-binding site of Ca²⁺/calmodulin-dependent kinase II as a mechanism for switching off the kinase activity. Biosci Rep. 2013 Feb 7;33(2):e00024.