Cell Signaling Technology

Product Pathways - NF-kB Signaling

NF-κB Family Member Antibody Sampler Kit #4766

Kit Includes Quantity Applications Reactivity MW (kDa) Isotype
NF-κB p65 (L8F6) Mouse mAb #6956 40 µl W IP IHC-P IF-IC F ChIP H M R Hm Mk Mi B Dg Pg 65 Mouse IgG2b
RelB (C1E4) Rabbit mAb #4922 40 µl W IP H M R Mk 70 Rabbit IgG
c-Rel Antibody #4727 40 µl W IP IHC-P IF-IC F H Mk 78 Rabbit
NF-κB1 p105/p50 Antibody #3035 40 µl W IP ChIP H Mk 50 Active form. 120 Precursor. Rabbit
NF-κB1 p105 Antibody #4717 40 µl W IP H M R Mk Mi B Pg 120 Rabbit
NF-κB2 p100/p52 Antibody #4882 40 µl W IP H M R Mk 52 (mature). 120 (precursor). Rabbit
NF-κB2 p100/p52 (18D10) Rabbit mAb (Human Specific) #3017 40 µl W IHC-P F H Mk 52 active form. 120 precursor. Rabbit IgG
NF-κB p65 (D14E12) XP® Rabbit mAb #8242 40 µl W IP IHC-P IF-IC F ChIP H M R Hm Mk Dg 65 Rabbit IgG
Anti-rabbit IgG, HRP-linked Antibody #7074 100 µl Goat
Anti-mouse IgG, HRP-linked Antibody #7076 100 µl Horse

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)  F=Flow Cytometry  ChIP=Chromatin IP
Reactivity Key:  H=Human  M=Mouse  R=Rat  Hm=Hamster  Mk=Monkey  Mi=Mink  B=Bovine  Dg=Dog  Pg=Pig
Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Specificity / Sensitivity

Each antibody in this kit recognizes endogenous levels of its target protein regardless of post-translational modification state such as phosphorylation or acetylation. The NF-κB1 p105/p50 Antibody #3035 detects both the precursor protein p105 and its cleavage product p50, while the NF-κB1 p105 Antibody #4717 only detects p105 and will not cross-react with p50. Both the NF-κB2 p100/p52 Antibody #4882 and the NF-κB2 p100/p52 (18D10) Rabbit mAb (Human Specific) #3017 will cross-react with the precursor protein p100 and its cleavage product p52.

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa and COS cells using NF-kB2 p100/p52 (18D10) Rabbit mAb (Human Specific) #3017.

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa cells, untreated or treated with TNF-α (12 ng/ml) for the indicated amounts of time, using NF-kB p105/p50 Antibody #3035.

Western Blotting

Western Blotting

Western blot analysis of extracts from THP-1 cells, differentiated with TPA (#9905, 80 nM for 24 h) and treated with 1 μg/ml LPS for the indicated times, using NF-κβ1 p105 Antibody #4717.


Western Blotting

Western Blotting

Western blot analysis of extracts from K562, Raji and 293 cells using c-Rel Antibody #4727.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell types using NF-kB2 p100/p52 Antibody #4882.

Western Blotting

Western Blotting

Western blot analysis of extracts from Raji, THP-1 and BaF3 cells using RelB (C1E4) Rabbit mAb #4922.


Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using NF-κβ p65 (L8F6) Mouse mAb #6956.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using NF-κB p65 (D14E12) XP® Rabbit mAb #8242.

Description

This kit contains reagents to examine total protein levels of the five NF-κB/Rel family members: p65/RelA, RelB, c-Rel, NF-κB1 (p105/p50) and NF-κB2 (p100/p52).

Source / Purification

Polyclonal antibodies are produced by immunizing animals with synthetic peptides corresponding to amino acid residues surrounding Glu498 of human NF-κB p65, near the carboxy terminus of human c-Rel, near the amino terminus of human NF-κB1 p105/p50, at the carboxy terminus of human NF-κB1 p105 and near the amino terminus of human NF-κB2 p100/p52. Antibodies are purified by Protein A and peptide affinity chromatography. Monoclonal antibody is produced by immunizing animals with synthetic peptides corresponding to amino acid residues near the carboxy terminus of human NF-κB p65, surrounding Ser424 of human RelB and near the amino terminus of human NF-κB2 p100/p52.

Background

Transcription factors of the nuclear factor κ B (NF-κB)/Rel family play a pivotal role in inflammatory and immune responses (1,2). There are five family members in mammals: RelA, c-Rel, RelB, NF-κB1 (p105/p50), and NF-κB2 (p100/p52). Both p105 and p100 are proteolytically processed by the proteasome to produce p50 and p52, respectively. Rel proteins bind p50 and p52 to form dimeric complexes that bind DNA and regulate transcription. In unstimulated cells, NF-κB is sequestered in the cytoplasm by IκB inhibitory proteins (3-5). NF-κB-activating agents can induce the phosphorylation of IκB proteins, targeting them for rapid degradation through the ubiquitin-proteasome pathway and releasing NF-κB to enter the nucleus where it regulates gene expression (6-8). NIK and IKKα (IKK1) regulate the phosphorylation and processing of NF-κB2 (p100) to produce p52, which translocates to the nucleus (9-11).

  1. Baeuerle, P.A. and Henkel, T. (1994) Annu Rev Immunol 12, 141-79.
  2. Baeuerle, P.A. and Baltimore, D. (1996) Cell 87, 13-20.
  3. Haskill, S. et al. (1991) Cell 65, 1281-9.
  4. Thompson, J.E. et al. (1995) Cell 80, 573-82.
  5. Whiteside, S.T. et al. (1997) EMBO J 16, 1413-26.
  6. Traenckner, E.B. et al. (1995) EMBO J 14, 2876-83.
  7. Scherer, D.C. et al. (1995) Proc Natl Acad Sci USA 92, 11259-63.
  8. Chen, Z.J. et al. (1996) Cell 84, 853-62.
  9. Senftleben, U. et al. (2001) Science 293, 1495-9.
  10. Coope, H.J. et al. (2002) EMBO J 21, 5375-85.
  11. Xiao, G. et al. (2001) Mol Cell 7, 401-9.

Application References

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