Disease related genes, Human disease related genes
Intracellular
Cell type enhanced (Oligodendrocytes, Late spermatids, Early spermatids, Spermatocytes)
Group enriched (plasmacytoid DC, myeloid DC, basophil, classical monocyte, intermediate monocyte, non-classical monocyte)
Low cell line specificity
Homodimer (PubMed:16139227). Interacts (via GBA motif) with guanine nucleotide-binding protein G(i) alpha subunits GNAI1, GNAI2 and GNAI3 (PubMed:19211784, PubMed:21954290, PubMed:23509302, PubMed:27621449, PubMed:31363053). Also interacts (via GNA motif) with guanine nucleotide-binding protein G(s) alpha subunit GNAS (PubMed:27621449). Interaction with G(i) alpha subunits occurs before interaction with GNAS and is regulated by phosphorylation; phosphorylation at Ser-1675 enhances binding to G(i) alpha subunits while phosphorylation at Ser-1690 abolishes G(i) alpha subunit binding, promoting binding to GNAS (PubMed:27621449). Interacts (via C-terminal SH2-like region) with growth factor receptors EGFR, INSR and KDR/VEGFR2 (via their autophosphorylated cytoplasmic tails) (PubMed:25187647). Forms a complex with EGFR and GNAI3 which leads to enhanced EGFR signaling and triggering of cell migration; ligand stimulation is required for recruitment of GNAI3 to the complex (PubMed:20462955, PubMed:25187647). Interacts (tyrosine-phosphorylated form) with phosphatidylinositol 3-kinase (PI3K) regulatory subunit PIK3R1/p85a (via SH2 domains); the interaction enables recruitment of PIK3R1 to the EGFR receptor, enhancing PI3K activity and cell migration (PubMed:21954290). Interacts with serine/threonine-protein kinase PRKCQ; the interaction leads to phosphorylation of CCDC88A and inhibition of its guanine nucleotide exchange factor activity (PubMed:23509302). Interacts (via C-terminus) with DISC1; the interaction is direct (By similarity). Interacts with AKT proteins; the interaction is inhibited in the presence of DISC1 (By similarity). Interacts with AKT1/PKB (via C-terminus) (PubMed:16139227). The non-phosphorylated form interacts with phosphatidylinositol 4-phosphate [PI(4)P] and weakly with phosphatidylinositol 3-phosphate [PI(3)P] (PubMed:16139227). Interacts with microtubules (By similarity). Interacts with actin (PubMed:16139227).
Guanine-nucleotide releasing factor
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For Research Use Only. Not For Clinical Use.