Our Anti-Aquaporin 2 (Ser264) rabbit polyclonal phosphospecific primary antibody from PhosphoSolutions is produced in-house. It detects rat Aquaporin 2 (Ser264) and is antigen affinity purified from pooled serum. It is great for use in WB, IHC.
Western blot of rat kidney lysate showing specific immunolabeling of the ~29 kDa and 37 kDa glycosylated form of the AQP2 protein phosphorylated at Ser264 in the vasopressin (AVP) treated lane (+), but not in the control lane (-).
Anti-Aquaporin 2 (Ser264) Antibody
Aquaporin 2 (Ser264)
Aquaporin 2 (AQP2) is a hormonally regulated water channel located in the renal collecting duct. Mutations in the AQP2 gene cause hereditary nephrogenic diabetes insipidus in humans (Iolascon et al.,2007). A vasopressin induced cAMP increase results in the phosphorylation of AQP2 at serine-256 and its translocation from the intracellular vesicles to the apical membrane of principal cells (van Balkom et al., 2002). Recently, serine-264 has been identified as a novel phosphorylation site on AQP2 and shown to be regulated by vasopressin thus implicating this site as important in AQP2 trafficking and subcellular distribution (Fenton RA et al., 2008).
Antigen Affinity Purified from Pooled Serum
Synthetic phospho-peptide corresponding to amino acid residues surrounding Ser264 of rat aquaporin 2, conjugated to keyhole limpet hemocyanin (KLH).
Human, Mouse, Rat
Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.
Prepared from pooled rabbit serum by affinity purification via sequential chromatography on phospho and non-phosphopeptide affinity columns.
10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol.
Specific for endogenous levels of the ~29 kDa AQP2 protein phosphorylated at Ser264. Also recognizes the glycosylated form of AQP2 at ~37 kDa. Immunolabeling is blocked by preadsorption with the phosphopeptide used as antigen, but not by the corresponding non-phosphopeptide.
Western blots performed on each lot.
For research use only. Not intended for therapeutic or diagnostic use. Use of all products is subject to our terms and conditions, which can be viewed on our website.
After date of receipt, stable for at least 1 year at -20°C.
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Lei, L., et al. 2018. Manganese promotes intracellular accumulation of AQP2 via modulating F-actin polymerization and reduces urinary concentration in mice. American Journal of Physiology-Renal Physiology, Oct 18: ajprenal-00391.
Lei, L., et al. 2018. Manganese promotes intracellular accumulation of AQP2 via modulating F-actin polymerization and reduces urinary concentration in mice. American Journal of Physiology-Renal Physiology, Oct 18:ajprenal-00391.
Al-Butaineh, M.M, et al. 2016. Activation of the Metabolic Sensor AMP-Activated Protein Kinase Inhibits Aquaporin-2 Function in Kidney Principal Cells. American Journal of Physiology-Renal Physiology, ajprenal-00308.
Hoffert, J.D., et al. 2014. Global analysis of the effects of the V2 receptor antagonist satavaptan on protein phosphorylation in collecting duct. American Journal of Physiology-Renal Physiology, 306(4), 410-421.