Activation of NDR1 Kinase by MOB1 and/or a Phosphorylated HM Peptide
(A) In vitro kinase assay analysis of wild-type GST-NDR1MBD−KD in the presence and absence of MOB1 activator and/or a phospho-HM peptide in trans. The top two panels show the autoradiograph, and the bottom three panels show protein loading by Coomassie staining.
(B) In vitro auto-phosphorylation analysis of NDR1MBD−KD versus NDR1KD in the presence and absence of MOB1 and/or a phospho-HM peptide in trans. The top panel displays the autoradiograph, and the bottom two panels show protein loading by Coomassie staining.
(C) In vitro auto-phosphorylation and phosphorylation of RAB3IP substrate by NDR1MBD−KD and NDR1KD, in the presence and absence of MOB1 and/or a phospho-HM peptide in trans. The top two panels display autoradiographs for NDR1 auto-phosphorylation and RAB3IP phosphorylation, respectively. The bottom three panels show protein loading by Coomassie staining.