CaM kinase inhibitor

Sequence, KKALRRQETVDAL, derived from Ca2+/calmodulin-dependent protein kinase II autophosphorylation site RQETVD plus basic residues to facilitate phosphocellulose binding. Contains consensus phosphorylation sequence R-X-X-S/T. Highly selective CaMKII substrate (Km=2 µM for CaMKII; 50 µM for PKC; no activity towards PKA).