Phospho-CaMK2 alpha/beta/delta (Thr305) Antibody detects endogenous levels of CaMK2 alpha/beta/delta only when phosphorylated at Threonine 305. CaMK2-alpha a protein kinase of the CAMK2 family. A prominent kinase in the central nervous system that may function in long-term potentiation and neurotransmitter release.