Date published: 2025-10-7

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eRF3a/b Antibody (B-8): sc-515615

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Datasheets
  • eRF3a/b Antibody (B-8) is a mouse monoclonal IgG2b κ eRF3a/b antibody provided at 200 µg/ml
  • specific for an epitope mapping between amino acids 120-137 within an internal region of eRF3a of human origin
  • eRF3a/b Antibody (B-8) is recommended for detection of eRF3a and eRF3b of mouse, rat and human origin by WB, IP, IF and ELISA
  • Anti-eRF3a/b Antibody (B-8) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • TransCruz reagent for ChIP application (sc-515615 X, 200 µg/0.1 ml)
  • m-IgG Fc BP-HRP, m-IgG2b BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for eRF3a/b Antibody (B-8) for WB applications. These reagents are now offered in bundles with eRF3a/b Antibody (B-8) (see ordering information below).

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eRF3a/b Antibody (B-8) is a mouse monoclonal IgG2b kappa light chain antibody that detects eRF3a/b protein of mouse, rat, and human origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and enzyme-linked immunosorbent assay (ELISA). anti-eRF3a/b antibody (B-8) is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. eRF3a protein, also known as GSPT1 (G1 to S phase transition 1), is a 499 amino acid protein that plays a crucial role in regulating cell growth by controlling translation termination, a vital process ensuring accurate protein synthesis. This function prevents production of truncated or malfunctioning proteins that could disrupt cellular functions and lead to diseases, including cancer. eRF3a exhibits a high degree of conservation across species, sharing 94% sequence identity with mouse counterpart, which underscores an essential role in cellular processes. eRF3b, also known as GSPT2, is a 632 amino acid cytoplasmic protein highly expressed in brain and involved in translation termination in response to termination codons UAA, UAG, and UGA. eRF3b acts as a potent stimulator of release factor activity of eRF1 and possesses GTPase activity dependent on ribosome and eRF1, indicating involvement in cell cycle progression. eRF3b is moderately expressed in spleen and lung, with weaker expression in heart, liver, and kidney, and contains three GTP binding sites, making eRF3b a key component of mRNA surveillance SURF complex.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

eRF3a/b Antibody (B-8) References:

  1. Mapping of the human GSPT1 gene, a human homolog of the yeast GST1 gene, to chromosomal band 16p13.1.  |  Ozawa, K., et al. 1992. Somat Cell Mol Genet. 18: 189-94. PMID: 1574740
  2. Identification of novel ARF binding proteins by two-hybrid screening.  |  Tompkins, V., et al. 2006. Cell Cycle. 5: 641-6. PMID: 16582619
  3. Human eukaryotic release factor 3a depletion causes cell cycle arrest at G1 phase through inhibition of the mTOR pathway.  |  Chauvin, C., et al. 2007. Mol Cell Biol. 27: 5619-29. PMID: 17562865
  4. G1 to S phase transition protein 1 induces apoptosis signal-regulating kinase 1 activation by dissociating 14-3-3 from ASK1.  |  Lee, JA., et al. 2008. Oncogene. 27: 1297-305. PMID: 17700517
  5. Proteasomal degradation of human release factor eRF3a regulates translation termination complex formation.  |  Chauvin, C. and Jean-Jean, O. 2008. RNA. 14: 240-5. PMID: 18083835
  6. A human homologue of the yeast GST1 gene codes for a GTP-binding protein and is expressed in a proliferation-dependent manner in mammalian cells.  |  Hoshino, S., et al. 1989. EMBO J. 8: 3807-14. PMID: 2511002
  7. A yeast gene required for the G1-to-S transition encodes a protein containing an A-kinase target site and GTPase domain.  |  Kikuchi, Y., et al. 1988. EMBO J. 7: 1175-82. PMID: 2841115
  8. Molecular cloning of a novel member of the eukaryotic polypeptide chain-releasing factors (eRF). Its identification as eRF3 interacting with eRF1.  |  Hoshino, S., et al. 1998. J Biol Chem. 273: 22254-9. PMID: 9712840

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

eRF3a/b Antibody (B-8)

sc-515615
200 µg/ml
$316.00

eRF3a/b Antibody (B-8): m-IgG Fc BP-HRP Bundle

sc-531441
200 µg Ab; 10 µg BP
$354.00

eRF3a/b Antibody (B-8): m-IgGκ BP-HRP Bundle

sc-525131
200 µg Ab, 40 µg BP
$354.00

eRF3a/b Antibody (B-8): m-IgG2b BP-HRP Bundle

sc-550287
200 µg Ab; 10 µg BP
$354.00

eRF3a/b Antibody (B-8) X

sc-515615 X
200 µg/0.1 ml
$316.00

eRF3a/b Antibody (B-8) AC

sc-515615 AC
500 µg/ml, 25% agarose
$416.00

eRF3a/b Antibody (B-8) HRP

sc-515615 HRP
200 µg/ml
$316.00

eRF3a/b Antibody (B-8) FITC

sc-515615 FITC
200 µg/ml
$330.00

eRF3a/b Antibody (B-8) PE

sc-515615 PE
200 µg/ml
$343.00

eRF3a/b Antibody (B-8) Alexa Fluor® 488

sc-515615 AF488
200 µg/ml
$357.00

eRF3a/b Antibody (B-8) Alexa Fluor® 546

sc-515615 AF546
200 µg/ml
$357.00

eRF3a/b Antibody (B-8) Alexa Fluor® 594

sc-515615 AF594
200 µg/ml
$357.00

eRF3a/b Antibody (B-8) Alexa Fluor® 647

sc-515615 AF647
200 µg/ml
$357.00

eRF3a/b Antibody (B-8) Alexa Fluor® 680

sc-515615 AF680
200 µg/ml
$357.00

eRF3a/b Antibody (B-8) Alexa Fluor® 790

sc-515615 AF790
200 µg/ml
$357.00

eRF3a/b (B-8) Neutralizing Peptide

sc-515615 P
100 µg/0.5 ml
$68.00

What application is the blocking peptide sc-515615 P appropriate for?

Asked by: DefinitelyNotMatt
Thank you for your question. The blocking peptide is intended for use as a negative control, by pre-adsorbing the mouse monoclonal antibody against the antigen. For full protocol details, please contact our Technical Services Department or view our online protocol here: https://www.scbt.com/scbt/resources/protocols/peptide-neutralization
Answered by: Technical Support
Date published: 2017-02-27
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Rated 5 out of 5 by from Great choice for Western BlotThis antibody works consistently in HepG2, CCRF-CEM, and HeLa whole cell lysates. Shown with Cruz Marker molecular weight standards, sc-2035. -SCBT QC
Date published: 2023-09-14
Rated 5 out of 5 by from Strong signalThe signal is very strong and can use for detection of endogenously expressed eRF3.
Date published: 2018-03-28
Rated 5 out of 5 by from OttimoL'anticorpo ha funzionato bene ed ha dato bande nitide
Date published: 2017-08-22
Rated 5 out of 5 by from Great antibodyI tried this antibody after they let me have a sample. It works really well in N2a cells and is specific. There are few extra bands.
Date published: 2017-05-01
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eRF3a/b Antibody (B-8) is rated 5.0 out of 5 by 4.
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