As part of our vaccine program, we have purified a recombinant form of
human cytomegalovirus glycoprotein B that is able to induce high tite
rs of virus-neutralizing antibodies. The isolated protein was found to
be phosphorylated at a serine residue in position -7 from the C termi
nus of the protein. The corresponding synthetic peptide, HLKDSDEEENV,
was an efficient in vitro substrate of casein kinase II.