Anti-eRF3a/GSPT1 antibody produced in rabbit
SIGMA/E4781 - ~1 mg/mL, affinity isolated antibody, buffered aqueous solution
Synonym: Anti-Eukaryotic Release Factor 3a; Anti-G1 to S phase transition 1; Anti-GST1, homolog of yeast
MDL Number: MFCD09265357
Product Type: Chemical
Immunofluorescence HeLa cells were fixed and permeabilized with 4% paraformaldehyde followed by 0.5% Triton X-100. Fixed cells were stained with 10 μg/mL Anti-eRF3a/GSPT1 antibody produced in Rabbit (Cat. No. E4781). The antibody was developed using Goat Anti-Rabbit IgG, Cy3™ conjugate. Cells were counterstained with DAPI (blue) to stain nuclei.
Western Blotting Whole extract of HeLa cells were separated on SDS-PAGE and probed with Anti-eRF3a/GSPT1 antibody produced in Rabbit (Cat. No. E4781). The antibody was developed using 1:10,000 Anti-Rabbit IgG (whole molecule)-Peroxidase antibody produced in Goat (Cat. No. A0545). Lanes 1. 0.5 μg/mL antibody 2. 1 μg/mL antibody 3. Negative Control
| antibody form | affinity isolated antibody |
| antibody product type | primary antibodies |
| biological source | rabbit |
| clone | polyclonal |
| concentration | ~1 mg/mL |
| conjugate | unconjugated |
| form | buffered aqueous solution |
| mol wt | antigen 76.5 kDa |
| packaging | antibody small pack of 25 μL |
| Quality Level | 200  |
| shipped in | dry ice |
| species reactivity | human |
| storage temp. | −20°C |
| target post-translational modification | unmodified |
| technique(s) | immunoprecipitation (IP): 1-2 μg using HeLa cell lysates |
| indirect immunofluorescence: 5-10 μg/mL using paraformadehyde-fixed HeLa cells | |
| western blot: 0.5-1 μg/mL using HeLa cell lysates | |
| UniProt accession no. | P15170  |
| Application: | Anti-eRF3a/GSPT1 antibody produced in rabbit has been used in immunoprecipitation, indirect immunofluorescence and western blotting. |
| Biochem/physiol Actions: | Eukaryotic release factor 3 a (eRF3a) is proteolytically processed into an IAP (Inhibitors of Apoptosis Proteins)-binding protein. Processed eRF3a interacts with IAPs and can promote caspase activation, IAP ubiquitination and apoptosis. The IAP binding motif is exposed only after proteolytic cleavage of a 69-residue leader sequence. eRF3a also affects mRNA stability and translation initiation by interacting with Poly(A)-binding protein (PABP) and the surveillance factor Upf1. |
| Biochem/physiol Actions: | Eukaryotic release factor 3a (eRF3a) is a translation termination protein that is encoded by G1 to S phase transition 1 gene (GSPT1) in humans. The eRF3a/GSPT1 exon 1 contains a tri-nucleotide GGC repeat coding for a polyglycine expansion in the N-terminal of the protein. It is associated with protein translation as a regulator of apoptosis signal-regulating kinase 1 (ASK1). GSPT1 interacts with ASK1 and enhances ASK1-induced apoptotic activity by activating caspase-3. It plays a novel role in the regulation of ASK1-mediated apoptosis. GSPT1 is found to be up-regulated in various human cancers and is considered as a potential proto-oncogene. |
| Disclaimer: | Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals. |
| General description: | Eukaryotic release factor 3 a (eRF3a) is encoded by the gene G1 to S phase transition 1 (GSPT1) in humans. The eRF3a/GSPT1 exon 1 is a translation termination protein characterized with a tri-nucleotide GGC repeat coding for a polyglycine expansion in the amino-terminal end. |
| Immunogen: | synthetic peptide corresponding to amino acids 190-204 of human eRF3a/GSPT1, conjugated to KLH via a C-terminal added cysteine residue. The sequence is conserved in human, rat, and mouse. |
| Physical form: | Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Storage Temp. | −20°C |
| UNSPSC | 12352203 |