- Poly(ADP-ribose) polymerase 1 and Ste20-like kinase hKFC act as transcriptional repressors for gamma-2 herpesvirus lytic replication. Gwack, Y., Nakamura, H., Lee, S.H., Souvlis, J., Yustein, J.T., Gygi, S., Kung, H.J., Jung, J.U. Mol. Cell. Biol. (2003)