Catalog # GP5791

Girdin (Ser-1416), phospho-specific Antibody

Rabbit Polyclonal

Application / Dilution

Size 100 μl

Species Reactivity Hu, Rt, Ms

MW 250 kDa



Girdin, a member of the CCDC88 (Hook related protein) family, is an actin binding protein involved with cell migration and maintaining cytoskeletal organization. Girdin has conserved domains at the N- and C-terminus that bind microtubules and actin, respectively. It enhances PI3-kinase dependent phosphorylation of proteins, most notably Akt. This same activity can contribute to tumor proliferation, invasion, and metastasis in breast, ovarian, prostate, and pancreatic tissues. Girdin is phosphorylated at three separate locations: Ser-1416, Ser-1674, and Tyr-1764. Ser-1416 is the primary Akt phosphorylation site, while Cyclin-dependent kinases interact with Girdin and phosphorylate Ser-1674. Multiple receptor tyrosine kinases can bind girdin and phosphorylate Tyr-1764.


Hayano S. et al, (2015) J Mol Cell Cardiol. 88:55
Lin, C. (2011) Sci Signal. 4(192): ra64
Jiang, P. (2008) Cancer Res. 1;68(5):1310
Simpson, F. (2005) Traffic. 6(6):442

Western blot image of human A431 cell lysates treated with Calyculin A (lanes 1-4). The blot was treated with lambda phosphatase to dephosphorylate Girdin phosphosites (lanes 2 & 4). The blot was probed with mouse monoclonal anti-Girdin (lanes 1 & 2) or rabbit polyclonal anti-Girdin (Ser-1416), phospho-specific (lanes 3 & 4).

Phospho-Girdin (Ser-1416) synthetic peptide (coupled to carrier) corresponding to amino acid residues around serine 1416 in human Girdin. This sequence is identical in rat and mouse Girdin, and has low homology to similar regions in other Girdin family members.

*For more information, see UniProt Accession Q3V6T2
Rabbit polyclonal, affinity-purified antibody is supplied in 100µl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store at –20°C. Stable for 1 year.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

The antibody was cross-adsorbed to unphosphorylated Girdin (Ser-1416) peptide before affinity purification using phospho-Girdin (Ser-1416) peptide. This antibody detects a 250 kDa* protein on SDS-PAGE immunoblots of human A431 cells stimulated with EGF or calyculin A. These reactivities are not observed after lambda phosphatase treatment to dephosphorylate Girdin.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: