- Identification and characterization of a novel Ste20/germinal center kinase-related kinase, polyploidy-associated protein kinase. Nishigaki, K., Thompson, D., Yugawa, T., Rulli, K., Hanson, C., Cmarik, J., Gutkind, J.S., Teramoto, H., Ruscetti, S. J. Biol. Chem. (2003)