Human eIF2 alpha Antibody

Catalog # Availability Size / Price Qty
Detection of Human eIF2 alpha  by Western Blot.
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Product Details
Supplemental Products

Human eIF2 alpha Antibody Summary

Species Reactivity
Detects human eIF2 alpha in Western blots.
Monoclonal Rat IgG2B Clone # 430516
Protein A or G purified from hybridoma culture supernatant
E. coli-derived recombinant human eIF2 alpha
Accession # Q53XC0
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
1 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Human eIF2a antibody by Western Blot. View Larger

Detection of Human eIF2 alpha by Western Blot. Western blot shows lysates of Jurkat human acute T cell leukemia cell line, K562 human chronic myelogenous leukemia cell line, and MCF-7 human breast cancer cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human eIF2a Monoclonal Antibody (Catalog # MAB3997) followed by HRP-conjugated Anti-Rat IgG Secondary Antibody (Catalog # HAF005). A specific band was detected for eIF2a at approximately 40 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: eIF2 alpha

Eukaryotic translation initiation factor 2 alpha subunit (eIF2 alpha ) is a subunit of the eIF2 protein, an important regulator of translation initiation. Phosphorylation of eIF2 alpha on Ser 52 increases the affinity of eIF2 alpha for eIF2B, a guanine nucleotide exchange factor needed for the recycling of eIF2-GDP to eIF2-GTP. Reduction of eIF2-GTP levels leads to the suppression of the overall rate of protein synthesis. Heme-regulated inhibitor (HRI), ER-resident protein kinase PERK, dsRNA activated protein kinase PKR, and the homologue of the S. cerevisiae protein kinase GCN2 are all eIF2 alpha kinases.

Long Name
Eukaryotic Translation Initiation Factor 2 Alpha
Entrez Gene IDs
1965 (Human); 13665 (Mouse); 54318 (Rat)
Alternate Names
eIF2 alpha; EIF2; EIF-2; EIF2A; EIF-2A; EIF-2alpha; EIF2S1 eukaryotic translation initiation factor 2, subunit 1 alpha, 35kDa; EIF2S1

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

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