Correction: DAPLE protein inhibits nucleotide exchange on Gαs and Gαq via the same motif that activates Gαi.

Abstract

MgCl 2 was omitted as a reagent in two buffers described under "In vitro protein-binding assays with GST-fused proteins" section (under "Experimental procedures"). "Beads were washed twice with PBS and resuspended in 300 ml of binding buffer (50 mM Tris-HCl (pH 7.4), 100