Routinely evaluated by affinity precipitation/immunoblot analysis. Ral-A-GTP was precipitated from EGF-stimulated Cos-7 cell lysates. The precipitated Ral-A-GTP was detected by Western immunoblot analysis using anti-Ral A.
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RAS oncogenes play a critical role in oncogenic transformation and metastases formation. Here we show that Ha-ras greatly stimulates spontaneous metastatic activity of transformed cells through the Ras/RalGDS/RalA intracellular signaling pathway. Introduction of RalA alone leads to a drastic increase
Quenched fluorescence peptides were used to investigate the substrate specificity requirements for recombinant wild-type angiotensin I-converting enzyme (ACE) and two full-length mutants bearing a single functional active site (N- or C-domain). We assayed two series of bradykinin-related peptides flanked by
Ral proteins are small GTPases that play critical roles in normal physiology and in oncogenesis. There is little information on the GTPase-activating proteins (GAPs) that downregulate their activity. Here, we provide evidence that the noncatalytic β subunit of RalGAPα1/2 β
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Epidermal growth factor receptor variant III (EGFRvIII) is a constitutively active mutant form of EGFR that is expressed in 40% to 50% of gliomas and several other malignancies. Here, we describe the therapeutic effects of silencing EGFRvIII on glioma cell
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