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Activates CDC42, a member of the Ras-like family of Rho- and Rac proteins, by exchanging bound GDP for free GTP. Mediates VEGF-induced CDC42 activation. May regulate proangiogenic action of VEGF in vascular endothelial cells, including network formation, directional movement and proliferation. May play a role in regulating the actin cytoskeleton and cell shape.
Gene References into Functions
We found that depletion of FGD5 in microvascular cells inhibited their migration towards a stable VEGFA gradient. Furthermore, depletion of FGD5 resulted in accelerated VEGFR2 degradation, which was reverted by lactacystin-mediated proteasomal inhibition. Our results thus suggest a mechanism whereby FGD5 sustains VEGFA signaling and endothelial cell chemotaxis via inhibition of proteasome-dependent VEGFR2 degradation. PMID: 28927665
FGD5 regulates VEGFR2 retention in recycling endosomes and coupling to PI3 (phosphoinositide-3) kinase/mTORC2-dependent cytoskeletal remodeling in endothelial cells. PMID: 29051140
FGD5 is a new prognostic marker in breast cancer, and increased copy number is associated with higher tumour proliferation and poorer long-term prognosis. PMID: 28124285
We provide the first report that pro-angiogenic genes PECAM1, PTGS1, FGD5, and MCAM may play a vital role in pathological dermal angiogenesis disorders of psoriasis. PMID: 26748901
FGD5 regulates endothelial adhesion, survival, and angiogenesis by modulating phosphatidylinositol 3-kinase signaling. PMID: 22922960
FGD5 inhibits neovascularization, indicated by in vitro tube-formation, aortic-ring, and coated-bead assays and by in vivo coated-bead plug assays and studies in the murine retina model. PMID: 22661514
Suggest that FGD5 regulates proangiogenic action of VEGF in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. PMID: 22328776
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Subcellular Location
Cytoplasm, cytoskeleton. Cell projection, ruffle membrane. Endoplasmic reticulum. Golgi apparatus. Early endosome. Note=In peripheral membrane ruffles, colocolizes with F-actin. In confluent HUVECs, detected at cell-cell-contact sites where it colocalizes with vascular endothelial cadherin/CDH5.
Tissue Specificity
Expressed in endothelial cells (at protein level).