Rabbit anti-Human Phospho-CCDC88A (S1417) Polyclonal Antibody

Uniprot Id

Q3V6T2

Target Species

Human

Target Name

CCDC88A

Target Full Name

Girdin

Target Function

Bifunctional modulator of guanine nucleotide-binding proteins (G proteins). Acts as a non-receptor guanine nucleotide exchange factor which binds to and activates guanine nucleotide-binding protein G(i) alpha subunits. Also acts as a guanine nucleotide dissociation inhibitor for guanine nucleotide-binding protein G(s) subunit alpha GNAS. Essential for cell migration. Interacts in complex with G(i) alpha subunits with the EGFR receptor, retaining EGFR at the cell membrane following ligand stimulation and promoting EGFR signaling which triggers cell migration. Binding to Gi-alpha subunits displaces the beta and gamma subunits from the heterotrimeric G-protein complex which enhances phosphoinositide 3-kinase (PI3K)-dependent phosphorylation and kinase activity of AKT1/PKB. Phosphorylation of AKT1/PKB induces the phosphorylation of downstream effectors GSK3 and FOXO1/FKHR, and regulates DNA replication and cell proliferation. Binds in its tyrosine-phosphorylated form to the phosphatidylinositol 3-kinase (PI3K) regulatory subunit PIK3R1 which enables recruitment of PIK3R1 to the EGFR receptor, enhancing PI3K activity and cell migration. Plays a role as a key modulator of the AKT-mTOR signaling pathway, controlling the tempo of the process of newborn neuron integration during adult neurogenesis, including correct neuron positioning, dendritic development and synapse formation. Inhibition of G(s) subunit alpha GNAS leads to reduced cellular levels of cAMP and suppression of cell proliferation. Essential for the integrity of the actin cytoskeleton. Required for formation of actin stress fibers and lamellipodia. May be involved in membrane sorting in the early endosome. Plays a role in ciliogenesis and cilium morphology and positioning and this may partly be through regulation of the localization of scaffolding protein CROCC/Rootletin.

Target Involvement

PEHO-like syndrome (PEHOL)

Target Subcellular Location

Cell membrane; Peripheral membrane protein. Cytoplasm, cytosol. Cytoplasmic vesicle. Cell projection, lamellipodium. Cytoplasm, cytoskeleton, cilium basal body. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, centriole.

Target Protein Families

CCDC88 family

Target Tissue Specificity

Expressed ubiquitously.

Target Research Area

Neuroscience

Target Synonyms

AKT iphosphorylation enhancer; Akt phosphorylation enhancer; APE; Ccdc88a; Coiled coil domain containing 88A; Coiled coil domain containing protein 88A; Coiled-coil domain-containing protein 88A; FLJ10392; G alpha interacting vesicle associated protein; G alpha-interacting vesicle-associated protein; Galpha interacting vesicle associated protein; Girders of actin filament; Girdin; GIV; GRDN; GRDN_HUMAN; HkRP1; Hook related protein 1; Hook-related protein 1; KIAA1212

Target Background

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.