Protein kinase C-zeta-induced phosphorylation of Ser318 in insulin receptor substrate-1 (IRS-1) attenuates the interaction with the insulin receptor and the tyrosine phosphorylation of IRS-1. - Moeschel,K.; Beck,A.; Weigert,C.; Lammers,R.; Kalbacher,H.; Voelter,W.; Schleicher,E.D.; Haring,H.U.; Lehmann,R. (J Biol Chem, 2004)