IκBα phospho Ser32,36 antibody (mAb)

Clone: 39A1431
Catalog No: 40904 Format: 100 µg $435 Buy

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Antibody Type:
Affinity Purified
Molecular Weight:
40 kDa


Western Blot Validated

Application Notes

Validated Applications:
WB: 1 - 2 µg/ml dilution

Published Applications: see references

For optimal results, primary antibody incubations should be performed at room temperature. The addition of 0.1% Tween 20 to all Blotto solutions may also reduce background. Individual optimization may be required.


This IκBα phospho Ser32,36 antibody was raised against a synthetic peptide containing phosphorylated serines at amino acid residues 32 and 36 of human IκBα.


PBS containing 0.02% sodium azide. Sodium azide is highly toxic.


IκBα phospho Ser32,36 antibody (mAb) tested by Western blot.

IκBα phospho Ser32,36 mAb tested by Western blot.
Jurkat cells were treated for 30 minutes with 100 µg/ml ALLN (N-Acetyl-Leu-Leu-Norleucinal), a calpain and proteasome inhibitor that prevents IκBα dephosphorylation, followed by incubation with (lanes 2 & 4) or without 1 nM TNF-α (1 & 3). The membranes were blotted with the anti-phospho-IκBα (lanes 1 & 2) or anti-IκBα, which recognizes both phosphorylated and non-phosphorylated forms of IκBα. The data shows that IκBα phospho Ser32,36 mAb detects specifically the phosphorylated forms of IκBα.


IκBα phospho Ser32,36 – NFκB (NFκB p50 and NFκB p65) signaling is controlled to a large extent by the sequestration of the NFκB complex in the cytoplasm by its association with one of the IκB family of proteins. IκBα is phosphorylated at Ser32 and Ser36 by the IκB Kinase (IKK) complex, resulting in the degradation of IκB and the nuclear translocation of NFκB.

Positive Control

Extracts from Jurkat cells treated for 30 minutes with 100 µg/ml ALLN (N-Acetyl-Leu-Leu-Norleucinal), followed by incubation with or without 1 nM TNF-α cell extract can be used as a positive control for IκBα phospho Ser32, 36 antibody.


Some products may be shipped at room temperature. This will not affect their stability or performance. Upon receipt, unconjugated antibodies may be stored at -20°C for up to 2 years. Fluorophore- & enzyme-conjugated antibodies should be stored at 4°C. Fluorophore-conjugated antibodies should be protected from light. Keep reagents on ice when not in storage; to avoid repeated freeze/thaw cycles, we recommend aliquoting items that will be stored frozen into single-use fractions prior to freezing.


This product is guaranteed for 6 months from date of receipt.

This product is for research use only and is not for use in diagnostic procedures.

Application Key

  • ChIP = Chromatin Immunoprecipitation;
  • DB = Dot Blot;
  • ELISA = Enzyme-linked Immunosorbent Assay;
  • EMSA = Electrophoretic Mobility Shift Assay
  • FC = Flow Cytometry;
  • ICC = Immunocytochemistry;
  • IF = Immunofluorescence;
  • IHC = Immunohistochemistry;
  • IP = Immunoprecipitation;
  • MeDIP = Methyl-DNA Immunoprecipitation;
  • TR-FRET = Time-Resolved Fluorescence Resonance Energy Transfer;
  • WB = Western Blotting