Aquaporin 2 (Collecting Duct) (AQP2) (pSer261) antibody

Antigen: Aquaporin 2 (Collecting Duct) (AQP2)

Synonyms: AQP-CD, WCH-CD, MGC34501, cph, jpk, AQP-2, MGC156502, aquaporin-2, AQP2

Epitope: pSer261

Clonality: Polyclonal

Host: Rabbit

Reactivity: Rat (Rattus)

Application: Western Blotting (WB)

Catalog no.: ABIN361469

Additional Information

Alternative name: Phospho-Ser261 Aquaporin 2

Format: Affinity-purified

Description: 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). Anti-Phospho-Ser261 Aquaporin 2 Western blot of rat kidney lysate showing specific immunolabeling of the ~ 29k and 37k glycosylated form of the AQP2 protein phosphorylated at Ser261. Immunolabeling is blocked by the phospho-peptide used as antigen (peptide) but not by the corresponding dephospho-peptide (not shown).

Specificity: Specific for ~29k AQP2 protein phosphorylated at Ser261. 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.

Application Details

Application Notes: Recommended Dilution: WB: 1:1000 Quality Control: Western blots performed on each lot.

Purification: Prepared from rabbit serum by affinity purification via sequential chromatography on phospho- and dephosphopeptide affinity columns.

Storage: Store at -20 °C, stable for 1 year

Restrictions: For Research Use only

Images

Western blots of rat kidney lysate showing specific immunolabeling of the ~ 29k and 37k glycosylated form of the AQP2 protein phosphorylated at Ser261. Immunolabeling is blocked by the phospho-peptide used as antigen (peptide) but not by the corresponding dephospho-peptide (not shown).