- The serine-threonine kinase MNK1 is post-translationally stabilized by PML-RARalpha and regulates differentiation of hematopoietic cells. Worch, J., Tickenbrock, L., Schwäble, J., Steffen, B., Cauvet, T., Mlody, B., Buerger, H., Koeffler, H.P., Berdel, W.E., Serve, H., Müller-Tidow, C. Oncogene (2004)