DOCK7, recruited to the activated MET receptor complex through GAB1 and, possibly, CRK or CRKL, stimulates guanyl nucleotide exchange on RAC1 from GDP to GTP, resulting in RAC1 activation and HGF-stimulated cell migration/invasion (Murray et al. 2014).Activation of RAC1 in response to HGF stimulation was reported to depend on the endosomal protein RAB5 and RAC1 guanyl exchange factor (GEF) TIAM1 (Palamidessi et al. 2008).
van Aelst, L,
guanyl-nucleotide exchange factor activity of HGF:p-4Y-MET:p-5Y-GAB1, HGF:p-4Y-MET:GRB2-1:p-5Y-GAB1:CRK,CRKL:(DOCK7) [plasma membrane]