Phospho-RelB (Ser552) (A7) rabbit mAb FITC conjugate

Catalog #: 2208
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100 Tests(2208) $358.80
10 Tests(2208S) $118.80
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20 μL is enough antibody for at least 20 Western blots.

Product Overview

RelB contains the Rel homology Domain (RHD) shared by all members of the NF-kB family (1). It is best known for its roles in lymphoid development, DC biology, and noncanonical signaling (2). RelB is a major contributor to chromatin biology, frequently functioning as a dual transcription factor that silences sets of genes by generating silent facultative heterochromatin and activates euchromatin of others (3). RelB is required to repress immediate-response proinflammatory genes during endotoxin tolerance (4). The N-terminal leucine zipper motif of RelB, a motif unique among the NF-κB family, may associate with more diverse DNA sequences than other NF-κB members (5). RelB binds to DNA but only after forming a heterodimer with NF-kB p50 or p52 (6). Like all NF-kB members, RelB contains an ∼300-residue region known as the RHD. This region supports many of the NF-kB essential functions, such as DNA binding, dimerization, and nuclear localization (7). RelB, unlike other NF-kB members, has an N-terminal leucine zipper motif (1), a domain that can typically interact with many proteins (8). p100, the C-terminus of NF-kB2 acts as a RelB inhibitor (9), where it sequesters RelB in the cytosol to repress its activity. RelB is phosphorylated rapidly at threonine 84 and serine 552, causing cleavage at the N-terminus and its degradation by the proteasome (10). These phosphorylations are mediated by glycogen synthase kinase-3β, specific inhibition of which blocks phospho RelB phosphorylation and degradation (11). This degradation does not occur when phospho RelB is phosphorylated at serine 368, allowing its association with and stabilization by p100 (12).

Product Details

Product Details
Specification Description
Applications Flow Cytometry
Clone RelBS552-A7
Format FITC
Validated Reactivity Human, Mouse
Cross Reactivity Predicted to work with mouse, rat and other homologues.
Clonality Monoclonal
Immunogen A synthetic phospho-peptide corresponding to residues surrounding Ser552 of human phospho RelB
Formulation 1X PBS, 0.09% NaN3, 0.2% BSA
Isotype Rabbit IgGk
Preparation Protein A+G
Recommended Usage For flow cytometric staining, the suggested use of this reagent is 5 µL per million cells or 5 µL per 100 µL of staining volume. It is recommended that the reagent be titrated for optimal performance for each application.
Storage 2-8ºC
Pseudonyms I-Rel
Uniprot ID Q01201
References 1. Ryseck R P et al., (1992), Cell. Biol. 12, 674–684.
2. Vallabhapurapu S., and Karin M. (2009), Annu. Rev. Immunol. 27, 693–733.
3. McCall C E and Yoza B K, (2007) Am. J. Respir. Crit. Care Med. 175, 763–767.
4. Yoza B K et al., (2006) J. Immunol. 177, 4080–4085.
5. Liu T F et al., (2011) J. Biol. Chem. 286, 9856–9864.
5. Moorthy AK et al., (2007) J. Mol. Biol. 373, 723–734.
6. Bours V et al., (1994) Oncogene 9, 1699–1702.
7. Baldwin A. S., Jr., (1996) Annu. Rev. Immunol. 14, 649–683.
8. Alber T. (1992), Curr. Opin. Genet. Dev. 2, 205–210.
9. Dobrzanski P et al., (1993), Mol. Cell. Biol. 13, 1572–1582.
10 Marienfeld R et al., (2001), Oncogene 20, 8142–8147.
11. Neumann M. Et al., (2011), Oncogene 30, 2485–2492.
12 Maier HJ et al., (2003), J. Biol. Chem. 278, 39242–39250.


Cell Culture Products
Flow cytometric analysis of Daudi cells secondary antibody only negative control (blue) or untreated (red) or treated with TPA (green) using Phospho-RelB (Ser552) FITC-conjugated antibody RelBS552-A7. Cat. #2208.

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