Anti-Aquaporin 2 (phospho S261) antibody (ab110418)


  • Product nameAnti-Aquaporin 2 (phospho S261) antibody
    See all Aquaporin 2 primary antibodies
  • Description
    Rabbit polyclonal to Aquaporin 2 (phospho S261)
  • Tested applicationsSuitable for: WB, ELISA, IHC-Pmore details
  • Species reactivity
    Reacts with: Rat
    Predicted to work with: Mouse, Sheep, Cow, Human, Pig, Chimpanzee, Macaque Monkey, Gorilla, Orangutan
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 250 to the C-terminus of Rat Aquaporin 2, phosphorylated at S261.

  • Positive control
    • This antibody gave a positive signal in WB within Rat Kidney tissue lysate as well as giving a positive result in IHC in the following FFPE tissue: Rat normal kidney.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage bufferpH: 7.40
    Preservative: 0.02% Sodium azide
    Constituent: PBS
    Note: Batches of this product that have a concentration < 1mg/ml may have BSA added as a stabilising agent. If you would like information about the formulation of a specific lot, please contact our scientific support team who will be happy to help.
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab110418 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use a concentration of 1 µg/ml. Detects a band of approximately 37 kDa (predicted molecular weight: 29 kDa).
ELISA Use at an assay dependent concentration.
IHC-P Use a concentration of 1 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.


  • FunctionForms a water-specific channel that provides the plasma membranes of renal collecting duct with high permeability to water, thereby permitting water to move in the direction of an osmotic gradient.
  • Tissue specificityExpressed in renal collecting tubules.
  • Involvement in diseaseDiabetes insipidus, nephrogenic, autosomal
  • Sequence similaritiesBelongs to the MIP/aquaporin (TC 1.A.8) family.
  • DomainAquaporins contain two tandem repeats each containing three membrane-spanning domains and a pore-forming loop with the signature motif Asn-Pro-Ala (NPA).
  • Post-translational
    Ser-256 phosphorylation is necessary and sufficient for expression at the apical membrane. Endocytosis is not phosphorylation-dependent.
  • Cellular localizationApical cell membrane. Basolateral cell membrane. Cytoplasmic vesicle membrane. Golgi apparatus, trans-Golgi network membrane. Shuttles from vesicles to the apical membrane. Vasopressin-regulated phosphorylation is required for translocation to the apical cell membrane. PLEKHA8/FAPP2 is required to transport AQP2 from the TGN to sites where AQP2 is phosphorylated.
  • Information by UniProt
  • Database links
  • Alternative names
    • ADH water channel antibody
    • AQP 2 antibody
    • AQP CD antibody
    • AQP-2 antibody
    • AQP-CD antibody
    • AQP2 antibody
    • AQP2_HUMAN antibody
    • AQPCD antibody
    • Aquaporin 2 collecting duct antibody
    • Aquaporin CD antibody
    • Aquaporin-2 antibody
    • Aquaporin-CD antibody
    • Aquaporin2 antibody
    • Aquaporine 2 antibody
    • Collecting duct water channel protein antibody
    • MGC34501 antibody
    • Water channel aquaporin 2 antibody
    • Water channel protein for renal collecting duct antibody
    • WCH CD antibody
    • WCH-CD antibody
    • WCHCD antibody
    see all

Anti-Aquaporin 2 (phospho S261) antibody images

  • IHC image of Aquaporin 2 (phospho S261) staining in Rat normal kidney formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab110418, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

  • Anti-Aquaporin 2 (phospho S261) antibody (ab110418) at 1 µg/ml + Kidney (Rat) Tissue Lysate at 20 µg

    Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution
    developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 29 kDa
    Observed band size : 37 kDa (why is the actual band size different from the predicted?)
    Additional bands at : 23 kDa,57 kDa. We are unsure as to the identity of these extra bands.

    Exposure time : 16 minutes
    Aquaporin 2 contains a potential glycosylation site (SwissProt) which may explain its migration at a higher molecular weight than predicted. The predicted molecular weight of Aquaporin 2 is 29 kDa (SwissProt), however we expect to observe a banding pattern around 37 kDa. Abcam welcomes customer feedback and would appreciate any comments regarding this product and the data presented above.
  • ab110418 was tested using an Indirect ELISA approach. The wells were coated with peptide (1µg/ml at 100µl/well) overnight at 4°C, followed by a 5% BSA blocking step for 1 hour at room temperature. The primary Ab was then added at a dilution range of 1- 0.00025µg/ml (100µl/well) for 1hr at room temperature. A HRP-conjugated anti-rabbit IgG (heavy and light chain) was used as a secondary antibody at 1:20,000 dilution for 1hr at room temperature.

References for Anti-Aquaporin 2 (phospho S261) antibody (ab110418)

ab110418 has not yet been referenced specifically in any publications.

Product Wall

Abcam has not validated the combination of species/application used in this Abreview.
Application Western blot
Sample Mouse Cell lysate - whole cell (MDC4)
Gel Running Conditions Reduced Denaturing (12%)
Loading amount 200000 cells
Treatment - and + 30µM Forskolin
Specification MDC4
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 1% · Temperature: RT°C

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Submitted Jun 06 2016