Phospho-RIP (Ser166) Antibody #31122
- WB
Supporting Data
| REACTIVITY | M |
| SENSITIVITY | Endogenous |
| MW (kDa) | 80 |
| SOURCE | Rabbit |
Application Key:
- WB-Western Blotting
Species Cross-Reactivity Key:
- M-Mouse
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
Storage
Protocol
Specificity / Sensitivity
Phospho-RIP (Ser166) Antibody recognizes endogenous levels of mouse RIP protein only when phosphorylated at Ser166. A nonspecific band is observed at 22 kDa.
Species Reactivity:
Mouse
The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.
Species predicted to react based on 100% sequence homology:
Rat
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser166 of mouse RIP protein. Antibodies are purified by protein A and peptide affinity chromatography.
Background
The receptor-interacting protein (RIP) family of serine-threonine kinases (RIP, RIP2, RIP3, and RIP4) are important regulators of cellular stress that trigger pro-survival and inflammatory responses through the activation of NF-κB, as well as pro-apoptotic pathways (1). In addition to the kinase domain, RIP contains a death domain responsible for interaction with the death domain receptor Fas and recruitment to TNF-R1 through interaction with TRADD (2,3). RIP-deficient cells show a failure in TNF-mediated NF-κB activation, making the cells more sensitive to apoptosis (4,5). RIP also interacts with TNF-receptor-associated factors (TRAFs) and can recruit IKKs to the TNF-R1 signaling complex via interaction with NEMO, leading to IκB phosphorylation and degradation (6,7). Overexpression of RIP induces both NF-κB activation and apoptosis (2,3). Caspase-8-dependent cleavage of the RIP death domain can trigger the apoptotic activity of RIP (8).
Necroptosis, a regulated pathway for necrotic cell death, is triggered by a number of inflammatory signals including cytokines in the tumor necrosis factor (TNF) family, pathogen sensors such as toll-like receptors (TLRs), and ischemic injury (9,10). The process is negatively regulated by caspases and is initiated through a complex containing the RIP and RIP3 kinases, typically referred to as the necrosome. Necroptosis is inhibited by a small molecule inhibitor of RIP, necrostatin-1 (Nec-1) (11). Research studies show that necroptosis contributes to a number of pathological conditions, and Nec-1 has been shown to provide neuroprotection in models such as ischemic brain injury (12). RIP is phosphorylated at several sites within the kinase domain that are sensitive to Nec-1, including Ser14, Ser15, Ser161, and Ser166 (13).
- Meylan, E. and Tschopp, J. (2005) Trends Biochem Sci 30, 151-9.
- Hsu, H. et al. (1996) Immunity 4, 387-96.
- Stanger, B.Z. et al. (1995) Cell 81, 513-23.
- Ting, A.T. et al. (1996) EMBO J 15, 6189-96.
- Kelliher, M.A. et al. (1998) Immunity 8, 297-303.
- Devin, A. et al. (2000) Immunity 12, 419-29.
- Zhang, S.Q. et al. (2000) Immunity 12, 301-11.
- Lin, Y. et al. (1999) Genes Dev 13, 2514-26.
- Christofferson, D.E. and Yuan, J. (2010) Curr Opin Cell Biol 22, 263-8.
- Kaczmarek, A. et al. (2013) Immunity 38, 209-23.
- Degterev, A. et al. (2008) Nat Chem Biol 4, 313-21.
- Degterev, A. et al. (2005) Nat Chem Biol 1, 112-9.
- Ofengeim, D. and Yuan, J. (2013) Nat Rev Mol Cell Biol 14, 727-36.
Limited Uses
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