Immunofluorescent analysis of Phospho-eIF2a pSer51 in HeLa cells using a Phospho-eIF2a pSer51 recombinant rabbit monoclonal antibody (Product # 701268) followed by detection using an Alexa Fluor 488-conjugated goat anti-rabbit secondary antibody (green) (Image A). Nuclei were stained using DAPI (Image B) and actin stained with Alexa Fluor 594 phalloidin (red) (image C). Image D is a composite image showing nuclear localization of EIF2a and Image E is a composite image of cells showing inhibition of antibody binding after competition with the phosphopeptide.
|Tested species reactivity||Human|
|Host / Isotype||Rabbit / IgG|
|Immunogen||Phosphopeptide corresponding to amino acids 48–57 of human Eukaryotic translation initiation factor 2A [pS51]|
|Contains||0.09% sodium azide|
|Storage Conditions||Maintain refrigerated at 2-8°C for up to 1 month. For long term storage store at -20°C|
|Tested Applications||Dilution *|
|Immunocytochemistry (ICC)||1-2 ug/ml|
|Immunofluorescence (IF)||1-2 ug/ml|
|Immunohistochemistry (Paraffin) (IHC (P))||1:20|
|Western Blot (WB)||2-3 ug/ml|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
This antibody is predicted to react with mouse, rat, non-human primate, rabbit and equine based on sequence homology.
ABfinity™ recombinant antibodies are rabbit monoclonal antibodies, unmatched for producing superior results. ABfinity™ antibodies are developed by immunizing animals, screening for functionality, cloning the immunogen-specific antibody genes into high-level mammalian expression vectors, produced on a large scale, and purified with Protein A.
ABfinity™ monoclonal antibodies resemble rabbit monoclonals isolated from serum or produced by hybridomas, but demonstrate greater specificity and sensitivity. Because ABfinity™ recombinant antibodies are derived from cloned DNA sequences of the heavy and light antibody chains, they are not susceptible to cell-line drift or lot-to-lot variation, thus allowing for peak specificity and performance.
Intact IgG appears on a non-reducing gel as ~150 kDa band and upon reduction generating a ~25 kDa light chain band and a ~50 kDa heavy chain.
EIF2a is a heterotrimer composed of three subunits (alpha, beta, and gamma). This translation initiation factor drives binding of initiator methionyl-tRNA to the 40S ribosome in an AUG-dependent manner to form the 43S pre-initiation complex. The polypeptide can be phosphorylated by related protein kinases activated in response to stress. Phosphorylated EIF2A inhibits EIF2B activity and prevents guanine nucleotide exchange.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.