a procedure is described of the isolation of protein kinase , which phosphorylates isolated troponin t with a rate , 5 -- 30 fold exceeding the phosphorylation rate of other substrates ( phosvitine , caseine , protamine sulphate , h1 , h2a , h2b , h3 , h4 histones ) .
C0033640
protein kinase
C0031715
phosphorylation