Sun, W., Kesavan, K., Schaefer, B.C., Garrington, T.P., Ware, M., Johnson, N.L., Gelfand, E.W. and Johnson, G.L. (2001) MEKK2 associates with the adapter protein Lad/RIBP and regulates the MEK5-BMK1/ERK5 pathway. Journal of Biological Chemistry, 276, 5093-5100.