Revision 1
Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IP

REACTIVITY:

M R

SENSITIVITY:

Endogenous

MW (kDa):

78

Source/Isotype:

Rabbit IgG

UniProt ID:

#Q60855

Entrez-Gene Id:

19766

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunoprecipitation 1:100

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

Phospho-RIP (Ser166) (E7G6O) Rabbit mAb recognizes endogenous levels of RIP protein only when phosphorylated at Ser166.

Species Reactivity:

Mouse, Rat

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser166 of mouse RIP protein.

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).

  1. Meylan, E. and Tschopp, J. (2005) Trends Biochem Sci 30, 151-9.
  2. Hsu, H. et al. (1996) Immunity 4, 387-96.
  3. Stanger, B.Z. et al. (1995) Cell 81, 513-23.
  4. Ting, A.T. et al. (1996) EMBO J 15, 6189-96.
  5. Kelliher, M.A. et al. (1998) Immunity 8, 297-303.
  6. Devin, A. et al. (2000) Immunity 12, 419-29.
  7. Zhang, S.Q. et al. (2000) Immunity 12, 301-11.
  8. Lin, Y. et al. (1999) Genes Dev 13, 2514-26.
  9. Christofferson, D.E. and Yuan, J. (2010) Curr Opin Cell Biol 22, 263-8.
  10. Kaczmarek, A. et al. (2013) Immunity 38, 209-23.
  11. Degterev, A. et al. (2008) Nat Chem Biol 4, 313-21.
  12. Degterev, A. et al. (2005) Nat Chem Biol 1, 112-9.
  13. Ofengeim, D. and Yuan, J. (2013) Nat Rev Mol Cell Biol 14, 727-36.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IP: Immunoprecipitation

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
XP is a registered trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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Revision 1
#53286

Phospho-RIP (Ser166) (E7G6O) Rabbit mAb

Western Blotting Image 1: Phospho-RIP (Ser166) (E7G6O) Rabbit mAb Expand Image
Western blot analysis of extracts from wild-type (WT) MEF or MEF/RIPK1 knockout (KO) cells, untreated (-) or treated with Z-VAD(OMe)-FMK #60332 (20 μM, 30 min) followed by Mouse Tumor Necrosis Factor-α (mTNF-α) #5178 (20 ng/ml, 7 hr) and SM-164 (100 nM, 7 hr), using Phospho-RIP (Ser166) (E7G6O) Rabbit mAb (upper), RIP (D94C12) XP® Rabbit mAb #3493 (middle), or GAPDH (D16H11) XP® Rabbit mAb #5174 (lower). MEF/RIPK1 KO cells were kindly provided by Dr. Junying Yuan, Harvard Medical School, Boston, MA.
Western Blotting Image 2: Phospho-RIP (Ser166) (E7G6O) Rabbit mAb Expand Image
Western blot analysis of extracts from L-929 cells, untreated (-) or treated with Z-VAD(OMe)-FMK #60332 (20 μM, 30 min) followed by Mouse Tumor Necrosis Factor-α (mTNF-α) #5178 (20 ng/ml, indicated times) and SM-164 (100 nM, indicated times), using Phospho-RIP (Ser166) (E7G6O) Rabbit mAb (upper), RIP (D94C12) XP® Rabbit mAb #3493 (middle), or β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western Blotting Image 3: Phospho-RIP (Ser166) (E7G6O) Rabbit mAb Expand Image
Western blot analysis of extracts from H9c2(2-1) cells, untreated (-) or treated with Z-VAD(OMe)-FMK #60332 (20 μM, 30 min) followed by Mouse Tumor Necrosis Factor-α (mTNF-α) #5178 (20 ng/ml, 4.5 hr) and SM-164 (100 nM, 4.5 hr), using Phospho-RIP (Ser166) (E7G6O) Rabbit mAb (upper), RIP (D94C12) XP® Rabbit mAb #3493 (middle), or GAPDH (D16H11) XP® Rabbit mAb #5174 (lower).
Immunoprecipitation Image 1: Phospho-RIP (Ser166) (E7G6O) Rabbit mAb Expand Image
Immunoprecipitation of phospho-RIP (Ser166) protein from L-929 cell extracts treated with Z-VAD(OMe)-FMK #60332 (20 μM, 30 min) followed by Mouse Tumor Necrosis Factor-α (mTNF-α) #5178 (20 ng/ml, 2 hr) and SM-164 (100 nM, 2 hr). Lane 1 is 10% input, lane 2 is Rabbit (DA1E) mAb IgG XP® Isotype Control #3900, and lane 3 Phospho-RIP (Ser166) (E7G6O) Rabbit mAb. Western blot analysis was performed using Phospho-RIP (Ser166) (E7G6O) Rabbit mAb. Mouse Anti-rabbit IgG (Conformation Specific) (L27A9) mAb (HRP Conjugate) #5127 was used as a secondary antibody.