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1052
Phospho-4E-BP1 (Thr37/46) Blocking Peptide

Phospho-4E-BP1 (Thr37/46) Blocking Peptide #1052

This peptide is used to block Phospho-4E-BP1 (Thr37/46) (236B4) Rabbit mAb #2855 reactivity.

The quality of the peptide was evaluated by reversed-phase HPLC and by mass spectrometry. The peptide reacts with Phospho-4E-BP1 (Thr37/46) (236B4) Rabbit mAb #2855 signal in dot blot.

Use as a blocking reagent to evaluate the specificity of antibody reactivity in dot blot protocols.

Storage:

Supplied in 20 mM potassium phosphate (pH 7.0), 50 mM NaCl, 0.1 mM EDTA, 1 mg/ml BSA, 5% glycerol and 1% DMSO. Store at –20°C.

Translation repressor protein 4E-BP1 (also known as PHAS-1) inhibits cap-dependent translation by binding to the translation initiation factor eIF4E. Hyperphosphorylation of 4E-BP1 disrupts this interaction and results in activation of cap-dependent translation (1). Both the PI3 kinase/Akt pathway and FRAP/mTOR kinase regulate 4E-BP1 activity (2,3). Multiple 4E-BP1 residues are phosphorylated in vivo (4). While phosphorylation by FRAP/mTOR at Thr37 and Thr46 does not prevent the binding of 4E-BP1 to eIF4E, it is thought to prime 4E-BP1 for subsequent phosphorylation at Ser65 and Thr70 (5).

  1. Pause, A. et al. (1994) Nature 371, 762-7.
  2. Brunn, G.J. et al. (1997) Science 277, 99-101.
  3. Gingras, A.C. et al. (1998) Genes Dev 12, 502-13.
  4. Fadden, P. et al. (1997) J Biol Chem 272, 10240-7.
  5. Gingras, A.C. et al. (1999) Genes Dev 13, 1422-37.
Entrez-Gene Id
1978
Swiss-Prot Acc.
Q13541
For Research Use Only. Not For Use In Diagnostic Procedures.

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