function:Acts as guanine nucleotide exchange factor (GEF) for RhoA and RAC1 GTPases. Binding of APC may activate RAC1 GEF activity. The APC-ARHGEF4 complex seems to be involved in cell migration as well as in E-cadherin-mediated cell-cell adhesion.,sequence caution:Translation N-terminally extended.,similarity:Contains 1 DH (DBL-homology) domain.,similarity:Contains 1 PH domain.,similarity:Contains 1 SH3 domain.,subcellular location:Associated with membrane ruffles.,subunit:Isoform 3 interacts with RHOA and RAC1, and through its N-terminus with APC. Found in a complex consisting of ARHGEF4, APC and CTNNB1.,tissue specificity:Expressed at low levels in brain, kidney, lung and muscle.,
[Isoform 3]: Cytoplasm. Cell projection, ruffle membrane ; Peripheral membrane protein ; Cytoplasmic side . Associated with membrane ruffles. .
Expressed at high levels in the brain, skeletal muscle and testis and at low levels in the kidney, lung, small intestine, ovary and prostate. Expression is aberrantly enhanced in most colorectal tumors.
下载说明书
