ARHGEF4

Rho GTPases play a fundamental role in numerous cellular processes that are initiated by extracellular stimuli that work through G protein coupled receptors. The protein encoded by this gene may form complex with G proteins and stimulate Rho-dependent sig

Full Name

Rho Guanine Nucleotide Exchange Factor 4

Function

Acts as guanine nucleotide exchange factor (GEF) for RHOA, RAC1 and CDC42 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. Required for MMP9 up-regulation via the JNK signaling pathway in colorectal tumor cells. Involved in tumor angiogenesis and may play a role in intestinal adenoma formation and tumor progression.

Biological Process

Filopodium assembly Source: UniProtKB
G protein-coupled receptor signaling pathway Source: Reactome
Intracellular signal transduction Source: InterPro
Lamellipodium assembly Source: UniProtKB
Positive regulation of apoptotic process Source: Reactome
Regulation of small GTPase mediated signal transduction Source: Reactome

Cellular Location

Isoform 3: Ruffle membrane; Cytoplasm. Associated with membrane ruffles.