The Rho binding domain (RBD) of the human Rhotekin protein has been expressed as a GST-fusion protein in E. coli. This protein binds binds specifically to GTP-bound, and not GDP-bound, RhoA, RhoB and RhoC proteins. The domain can therefore be used to specifically precipitate active, GTP-bound Rho proteins as well as to specifically block the activity of these proteins in vitro and in vivo.nThe GST-Rhotekin-RBD contains residues 7-89 of Rhotekin. This region includes the sequences required for the high affinity interaction with GTP-Rho.nThe protein is supplied in a glutathione agarose bound format and is shipped lyophilized. The beads are colored for ease of use. This product is used in our RhoA pulldown activation assay Biochem Kit™ (Cat. # BK036). The GST-Rhotekin-RBD is also available as a free protein (Cat. # RT01).
