alkali-dissociated , purified preparations of prototype coxsackievirus b4 release a protein kinase that catalyzes the incorporation of gamma-phosphate from 32p-labeled atp into three virus capsid proteins ( vp1 , vp3 , vp4 ) , several additional proteins of the particle , and exogenous acceptor proteins .
C0042776
virus
C1136102
capsid proteins