- The protein kinases AtMAP3Kepsilon1 and BnMAP3Kepsilon1 are functional homologues of S. pombe cdc7p and may be involved in cell division. Jouannic, S., Champion, A., Segui-Simarro, J.M., Salimova, E., Picaud, A., Tregear, J., Testillano, P., Risueño, M.C., Simanis, V., Kreis, M., Henry, Y. Plant J. (2001)