Cell Signaling Technology

Product Pathways - Translational Control

eIF4G (C45A4) Rabbit mAb #2469

Applications Reactivity Sensitivity MW (kDa) Isotype
W IHC-P IF-IC F H M R Mk Endogenous 220 Rabbit IgG

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)  F=Flow Cytometry
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey
Species cross-reactivity is determined by Western blot.

Specificity / Sensitivity

eIF4G (C45A4) Rabbit mAb detects endogenous levels of total eIF4G protein.

Source / Purification

eIF4G (C45A4) Rabbit mAb is produced by immunizing rabbits with a synthetic peptide (KLH-coupled) derived from the sequence around Gly188 of human eIF4G.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using eIF4G (C45A4) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human glioblastoma using eIF4G (C45A4) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human lung carcinoma using eIF4G (C45A4) Rabbit mAb.


Flow Cytometry

Flow Cytometry

Flow cytometric analysis of HeLa cells using eIF4G (C45A4) Rabbit mAb (blue) compared to a nonspecific negative control antibody (red).

IF-IC

IF-IC

Confocal immunofluorescent analysis of HeLa cells using eIF4G (C45A4) Rabbit mAb (green). Actin filaments have been labeled with Alexa Fluor® 555 phalloidin (red). Blue pseudocolor = DRAQ5™ (fluorescent DNA dye).

Background

The initiation of translation is an important biological event and a variety of factors contribute to this process. Members of the eIF4 translation initiation factor family bind to the 5' m7GTP mRNA cap and function to unwind the mRNA secondary structure (1,2). The amino-terminal portion of eIF4G physically associates with eIF4E to stimulate the binding of eIF4E to the mRNA cap structure (3). eIF4G also interacts with eIF3 and eIF4A (4) and serves as an adaptor molecule in the eIF4 complex. Moreover, eIF4G plays a role in internal ribosomal entry site (IRES)-mediated initiation of translation (5,6). Two distinct eIF4G species have been identified; eIF4GI and eIF4GII share 46% identity in their amino acid sequences and are functionally related homologs (7).

  1. Yan, R. and Rhoads, R.E. (1995) Genomics 26, 394-398.
  2. Morley, S.J. et al. (1997) RNA 3, 1085-1104.
  3. Haghighat, A. and Sonenberg, N. (1997) J. Biol. Chem. 272, 21677-21680.
  4. De Gregorio, E. et al. (1998) RNA 4, 828-836.
  5. Ohlmann, T. et al. (1996) EMBO J. 15, 1371-1382.
  6. Borman, A.M. and Kean, K.M. (1997) Virology 237, 129-136.
  7. Gradi, A. et al. (1998) Mol Cell Biol 18, 334-42.

Application References

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Companion Products

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.

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