Our Anti-Aquaporin 2 (Ser269) rabbit polyclonal phosphospecific primary antibody from PhosphoSolutions is produced in-house. It detects human, mouse, and rat Aquaporin 2 (Ser269) and is antigen affinity purified from pooled serum. It is great for use in WB, IHC, ICC, IP.
Immunolabeling of vasopressin treated mouse kidney (inner medulla) showing specific labeling of the AQP2 protein phosphorylated at Ser269 (Cat. p112-269, red, 1:1000). Nuclei labeled with DAPI. Magnification 10x. Image kindly provided by Juan Pablo Arroyo Ornelas, Vanderbilt University.
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). Serine-269 has been recently identified as a vasopressin-mediated phosphorylation site on AQP2 and as such has shown to potentiate plasma membrane retention of AQP2 (Hoffert JD et al., 2008).
Antigen Affinity Purified from Pooled Serum
Polyclonal
IgG
ELISA, ICC, IHC, IP, WB
Rabbit
AQP2
29/37 kDa
Synthetic phospho-peptide corresponding to amino acid residues surrounding Ser269 of rat aquaporin 2, conjugated to keyhole limpet hemocyanin (KLH).
Rat
Human, Mouse, Rat
Bovine, Canine
AB_2492043
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.
Liquid
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.
WB: 1:1000
IHC: 1:600-1:5000
ICC: 1:200-1:500
IP: 3 ul
Unconjugated
Specific for endogenous levels of the ~29 kDa AQP2 protein phosphorylated at Ser269. 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.
Phosphorylated
Ser269
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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