The Rabbit Polyclonal anti-AQP2 antibody has been validated for WB and IHC (fro). It is suitable to detect AQP2 in samples from Human, Rat, Mouse, Cow, Dog, Chicken and Non-Human Primate. There are 2+ publications available.
Specific for ~29k AQP2 protein phosphorylated at Ser261. This antibody Also recognizes the glycosylated form of AQP2 at ~37k. Immunolabeling of the AQP2 band is blocked by preadsorption with the phospho-peptide used as antigen but not by the corresponding dephospho-peptide.
Cross-Reactivity (Details)
Species reactivity (expected):Human, Bovine, Canine, Chicken, Mouse and non-Human Primates. Species reactivity (tested):Rat.
Purification
Affinity Chromatography.
Immunogen
Phosphopeptide corresponding to amino acid residues surrounding the phospho-Ser261 of Rat Aquaporin 2.
Western Blot: 1/1000. Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
Restrictions
For Research Use only
Format
Liquid
Buffer
10 mM HEPES ( pH 7.5), 150 mM NaCl, 100 μg/mL BSA and 50 % Glycerol.
Handling Advice
Avoid repeated freezing and thawing.
Storage
-20 °C
Storage Comment
Store the antibody undiluted (in aliquots) at-20 °C.
Bogum, Faust, Zühlke, Eichhorst, Moutty, Furkert, Eldahshan, Neuenschwander, von Kries, Wiesner, Trimpert, Deen, Valenti, Rosenthal, Klussmann: "Small-molecule screening identifies modulators of aquaporin-2 trafficking." in: Journal of the American Society of Nephrology : JASN, Vol. 24, Issue 5, pp. 744-58, (2013) (PubMed).
Hoffert, Fenton, Moeller, Simons, Tchapyjnikov, McDill, Yu, Pisitkun, Chen, Knepper: "Vasopressin-stimulated increase in phosphorylation at Ser269 potentiates plasma membrane retention of aquaporin-2." in: The Journal of biological chemistry, Vol. 283, Issue 36, pp. 24617-27, (2008) (PubMed).
Target
AQP2
(Aquaporin 2 (Collecting Duct) (AQP2))
Alternative Name
Aquaporin-2
Background
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-261 has been identified as a novel phosphorylation site on AQP2 and levels of phosphorylated S261 have been shown to decrease with vasopressin treatment suggesting its involvement in vasopressin-dependent AQP2 trafficking (Hoffert et al., 2007).Synonyms: ADH water channel, AQP-CD, AQP2, Aquaporin-CD, Collecting duct water channel protein, WCH-CD, Water channel protein for renal collecting duct