Supplementary Materials

This PDF file includes:

  • Fig. S1. Conserved motifs in Gα subunits.
  • Fig. S2. In vitro BODIPY-GTP– and BODIPY-GDP–binding studies.
  • Fig. S3. Analysis of GTPγS binding to AtGPA1 and AtGPA1(S52C).
  • Fig. S4. Negative controls for BiFC assays.
  • Fig. S5. Assessment of interactions between AtRGS1 and AtGPA1 variants in planta.
  • Fig. S6. Assessment of the interaction between AtRGS1 and AGB1 in planta and of the effects of AGG subunits.

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