- Role of Nbs1 in the activation of the Atm kinase revealed in humanized mouse models. Difilippantonio, S., Celeste, A., Fernandez-Capetillo, O., Chen, H.T., Reina San Martin, B., Van Laethem, F., Yang, Y.P., Petukhova, G.V., Eckhaus, M., Feigenbaum, L., Manova, K., Kruhlak, M., Camerini-Otero, R.D., Sharan, S., Nussenzweig, M., Nussenzweig, A. Nat. Cell Biol. (2005)