... number of participating protein co mplexes, cross interactions between pathways and the functioning of regulatory circuits. It is this complexitythat makes th e understanding of cellular signalling ... (1999) The repertoire of fos and jun proteins expressed during the G1 phase o f t he cell cycle isdetermined by the duration of mitogen-activated protein k inase activation. Mol . Cell Biol. 19, 3 ... of diacylglycerol-regulated protein kinase C isotypes in growth factor activation of the Raf-1 protein k inase. Mol. Cell. Biol. 17, 732–741.27. Lin, L.L., W artmann, M., Lin, A.Y., Knopf, J.L.,...