Table 2

Reported RGS post-translational modifications

Phosphorylation (Kinase)PiFunctionAcylationLipid Function
RGS22-150 PKCReduces GAP activity2-a
RGS32-150 PKC; PKG14-3-3 associationb; membrane translocationc
RGS4PKGMembrane translocationc PalmitateMembrane bindingi; inhibits GAP activityj
RGS72-150 PKC; p3814-3-3 associationb; reduces ubiquitination/degradationd PalmitateMembrane localization?k
RGS102-150 PKANuclear translocatione PalmitateInhibits GAP in vitro, enhances in vitroj
RGS16EGFR; ?Enhances GAP activitym; reduces GAP activityf PalmitateRequired for in vivo Gi/o regulationl
GAIP/RGS19 Casein kinase 2g; ERKEnhances GAP activity to Gi3 h PalmitateMembrane attachmentm; microdomain targeting
  • 2-150  Nuclear localization seen with native or recombinant protein.

  • 2-a Cunningham et al., 2001;b Benzing et al., 2000;c Pedram et al., 2000;d Benzing et al., 1999;e Burgon et al., 2001;f Chen et al., 2001;g Fischer et al., 2000;h Ogier-Denis et al., 2000;i Tu et al., 2001;j Tu et al., 1999;k Rose et al., 2000;l Druey et al., 1999;m De Vries et al., 1996;n Derrien, 2001.