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CCDC88A
Anti-CCDC88A Recombinant Antibody Products
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For Research Use Only. Not For Clinical Use.
This gene encodes a member of the Girdin family of coiled-coil domain containing proteins. The encoded protein is an actin-binding protein that is activated by the serine/threonine kinase Akt and plays a role in cytoskeleton remodeling and cell migration. The encoded protein also enhances Akt signaling by mediating phosphoinositide 3-kinase (PI3K)-dependent activation of Akt by growth factor receptor tyrosine kinases and G protein-coupled receptors. Increased expression of this gene and phosphorylation of the encoded protein may play a role in cancer metastasis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene.
Protein class
Disease related genes, Human disease related genes
Predicted location
Intracellular
Single cell type specificity
Cell type enhanced (Oligodendrocytes, Late spermatids, Early spermatids, Spermatocytes)
Immune cell specificity
Group enriched (plasmacytoid DC, myeloid DC, basophil, classical monocyte, intermediate monocyte, non-classical monocyte)
Cell line specificity
Low cell line specificity
Interaction
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).
Molecular function
Guanine-nucleotide releasing factor
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