Cell Signaling Technology

Product Pathways - PI3K / Akt Signaling

Phospho-eNOS (Ser1177) (C9C3) Rabbit mAb #9570

Applications Reactivity Sensitivity MW (kDa) Isotype
W IP E-P H B Pg (M) (R) Endogenous 140 Rabbit IgG

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  E-P=ELISA (Peptide)
Reactivity Key:  H=Human  M=Mouse  R=Rat  B=Bovine  Pg=Pig
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

Phospho-eNOS (Ser1177) (C9C3) Rabbit mAb detects endogenous levels of eNOS only when phosphorylated at Ser1177.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser1177 of human eNOS.

Western Blotting

Western Blotting

Western blot analysis of extracts from BAEC cells, phosphatase or VEGF-treated, using Phospho-eNOS  (Ser1177) (C9C3) Rabbit mAb (upper) or eNOS Antibody #9572 (lower).

Background

Endothelial nitric-oxide synthase (eNOS) is an important enzyme in the cardiovascular system. It catalyzes the production of nitric oxide (NO), a key regulator of blood pressure, vascular remodeling, and angiogenesis (1,2). The activity of eNOS is regulated by phosphorylation at multiple sites. The two most thoroughly studied sites are the activation site Ser1177 and the inhibitory site Thr495 (3). Several protein kinases including Akt/PKB, PKA, and AMPK activate eNOS by phosphorylating Ser1177 in response to various stimuli (4,5). In contrast, bradykinin and H2O2 activate eNOS activity by promoting both Ser1177 phosphorylation and Thr495 dephosphorylation (6,7).

  1. Fulton, D. et al. (2001) J. Pharmacol. Exp. Ther. 299, 818-824.
  2. Shaul, P.W. (2002) Annu. Rev. Physiol. 64, 749-774.
  3. Chen, Z.P. et al. (1999) FEBS Lett. 443, 285-289.
  4. Dimmeler, S. et al. (1999) Nature 399, 601-605.
  5. Fulton, D. et al. (1999) Nature 399, 597-601.
  6. Harris, M.B. et al. (2001) J. Biol. Chem. 276, 16587-16591.
  7. Thomas, S.R. et al. (2002) J. Biol. Chem. 277, 6017-6024.

Application References

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Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

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