Fig. 1. Palmitoylated RAS hypervariable regions (HVRs). Alignment of palmitoylated RAS HVR sequences reveals regions of strong homology between isoforms that are conserved between species (A). Patches B1 and B2 containing basic (+) and hydrophobic (
) residues are conserved together with a precisely located central pair of acidic (–) residues. K(B)-RAS is shown for reference (B). (C) GFP-tagged HVR mutants used for the analysis of membrane targeting.