Phospho-RelB (Ser552) (Clone: A7) rabbit mAb APC conjugate
Fig-1: Flow cytometric analysis of NIH3T3 cells untreated and unstained as negative control (blue) or untreated (red) or treated with UV plus TPA (green) and stained using Phospho-RelB (Ser552) APC-conjugated antibody RelBS552-A7.
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| Amount : | 100 Tests |
| Isotype : | Rabbit IgG1k |
| Content : | 1X PBS, 0.09% NaN3, 0.2% BSA |
| Storage condition : | Store at 2-8°C. Avoid repeated freeze and thaw cycles. |
| Alternative Name : | I-Rel |
| Immunogen Information : | A synthetic phospho-peptide corresponding to residues surrounding Ser552 of human phospho RelB |
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-kB family, may associate with more diverse DNA sequences than other NF-kB 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 approximately 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-3B, 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).
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. See product image legends for additional information.
For Research Use Only. Not for use in diagnostic/therapeutics procedures.
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