antibodies from two of the three lines enhance the enzymatic activity of the kinase preparation for phosphorylation of the alpha subunit of eukaryotic translational initiation factor 2 ( eif-2 ) and for phosphorylation of the 100-kda peptide thought to be a peptide of the kinase that is phosphorylated during its activation .
C0031715
phosphorylation
C0031727
kinase