Product Pathways - Translational Control
eIF4B Antibody #3592
| Applications | Reactivity | Sensitivity | MW (kDa) | Source |
|---|---|---|---|---|
| W | H M R Mk | Endogenous | 80 | Rabbit |
Applications Key:
W=Western Blotting
Reactivity Key:
H=Human
M=Mouse
R=Rat
Mk=Monkey
Species cross-reactivity is determined by Western blot.
Specificity / Sensitivity
eIF4B Antibody recognizes endogenous levels of eIF4B, independent of phosphorylation.
Source / Purification
Polyclonal antibodies are produced by immunizing rabbits with a synthetic peptide (KLH-coupled) corresponding to residues at the amino terminus of human eIF4B. Antibodies are purified by protein A and peptide affinity chromatography.
Background
Eukaryotic initiation factor 4B (eIF4B) is thought to assist the eIF4F complex in translation initiation. In plants, eIF4B is known to interact with the poly-(A) binding protein, increasing its poly-(A) binding activity (1). Heat shock and serum starvation cause dephosphorylation of eIF4B at multiple sites with kinetics similar to those of the corresponding inhibition of translation, while phosphorylation of eIF4B following insulin treatment correlates well with an observed increase in translation (2-5). Multiple kinases, including p70 S6 kinase, can phosphorylate eIF4B in vitro, and at least one serum-inducible eIF4B phosphorylation site is sensitive to rapamycin and LY294002 (6).
- Le, H. et al. (1997) J. Biol. Chem. 272, 16247-16255.
- Duncan, R.F. and Hershey, J.W. (1989) J. Cell Biol. 109, 1467-1481.
- Duncan, R.F. and Hershey, J.W. (1984) J. Biol. Chem. 259, 11882-11889.
- Duncan, R. and Hershey, J.W. (1985) J. Biol. Chem. 260, 5493-5497.
- Manzella, J.M. et al. (1991) J. Biol. Chem. 266, 2383-2389.
- Gingras, A.C. et al. (2001) Genes Dev. 15, 807-826.
Application References
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This product is for in vitro research use only and is not intended for use in humans or animals. This product is not intended for use as therapeutic or in diagnostic procedures.