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AB249341

Anti-eIF2A antibody [EPR11041] - BSA and Azide free

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Rabbit Recombinant Monoclonal EIF2A antibody. Carrier free. Suitable for ICC/IF, WB and reacts with Human samples.

View Alternative Names

CDA02, MSTP004, MSTP089, EIF2A, Eukaryotic translation initiation factor 2A, eIF-2A, 65 kDa eukaryotic translation initiation factor 2A

4 Images
Immunocytochemistry/ Immunofluorescence - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)
  • ICC/IF

Lab

Immunocytochemistry/ Immunofluorescence - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)

This data was developed using ab157478, the same antibody clone in a different buffer formulation.ab157478 staining eIF2A in wild-type HAP1 cells (top panel) and EIF2A knockout HAP1 cells (bottom panel). The cells were fixed with 100% methanol for 5 minutes, permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1 hour. The cells were then incubated with ab157478 at 1μg/ml and ab195889 at 1/250 dilution (shown in pseudo colour red) overnight at +4°C, followed by a further incubation at room temperature for 1 hour with Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) preadsorbed (ab150081) secondary antibody at 2 μg/ml (shown in green). Nuclear DNA was labelled in blue with DAPI.

Immunocytochemistry/ Immunofluorescence - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)
  • ICC/IF

Unknown

Immunocytochemistry/ Immunofluorescence - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)

This data was developed using ab157478, the same antibody clone in a different buffer formulation.Immunofluorescent analysis of Raji cells labeling eIF2A with ab157478 at 1/100 dilution.

Western blot - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)
  • WB

Unknown

Western blot - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)

This data was developed using ab157478, the same antibody clone in a different buffer formulation.

All lanes:

Western blot - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (ab249341) at 1/1000 dilution

Lane 1:

Ramos cell lysate at 10 µg

Lane 2:

MOLT4 cell lysate at 10 µg

Lane 3:

U87-MG cell lysate at 10 µg

Lane 4:

Raji cell lysate at 10 µg

Secondary

All lanes:

HRP labelled goat anti-rabbit at 1/2000 dilution

Predicted band size: 65 kDa

false

Western blot - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)
  • WB

Lab

Western blot - Anti-eIF2A antibody [EPR11041] - BSA and Azide free (AB249341)

This data was developed using ab157478, the same antibody clone in a different buffer formulation.

Lane 1 : Wild-type HAP1 cell lysate (20 μg)

Lane 2 : eIF2A knockout HAP1 cell lysate (20 μg)

Lane 3 : U87-MG cell lysate (20 μg)

Lane 4 : MOLT4 cell lysate (20 μg)

Lanes 1 - 4 : Merged signal (red and green). Green - ab157478 observed at 65 kDa. Red - loading control, ab8245, observed at 37 kDa.

ab157478 was shown to recognize eIF2A when eIF2A knockout samples were used, along with additional cross-reactive bands. Wild-type and eIF2A knockout samples were subjected to SDS-PAGE. ab157478 and ab8245 (loading control to GAPDH) were diluted at 1/500 and 1/10000 respectively and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed ab216773 and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed ab216776 secondary antibodies at 1/10000 dilution for 1 h at room temperature before imaging.

All lanes:

Western blot - Anti-eIF2A antibody [EPR11041] (<a href='/en-us/products/primary-antibodies/eif2a-antibody-epr11041-ab157478'>ab157478</a>)

Predicted band size: 65 kDa

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR11041

Isotype

IgG

Carrier free

Yes

Reacts with

Human

Applications

WB, ICC/IF

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "ICCIF-species-checked": "testedAndGuaranteed", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "IP-species-checked": "notRecommended", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "notRecommended", "FlowCyt-species-dilution-info": "", "FlowCyt-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "", "WB-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p>" } } }

Product details

ab249341 is the carrier-free version of ab157478.

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification
Storage buffer
pH: 7.2 - 7.4 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

The eIF2A also referred to as eukaryotic translation initiation factor 2A is a protein involved in the initiation of mRNA translation. The eIF2A protein is distinct from eIF2α despite the similarity in their names. Its molecular weight is approximately 65 kDa. Expression of eIF2A occurs mainly in the cytoplasm of cells where it participates in the protein synthesis process. eIF2A functions as a mediator that targets the initiator methionylated-tRNA to the small ribosomal subunit in a manner independent from eIF2 complex.
Biological function summary

EIF2A impacts the translation mechanism by facilitating the binding of Met-tRNAi to the ribosome under particular conditions especially during stress responses where canonical eIF2 might be inhibited. It operates independently from the larger eIF2 complex which also includes eIF2β and eIF2γ subunits. This independent activity allows eIF2A to serve as a backup mechanism for translation initiation when the normal pathway is impaired.

Pathways

Translation regulation involves interaction with cellular stress pathways and the integrated stress response (ISR). eIF2A operates within pathways that respond to physiological stresses such as nutrient deprivation and oxidative stress which trigger alterations in protein synthesis rates. eIF2A is related to the eIF2 kinase which phosphorylates the α subunit of eIF2 leading to a general reduction in translation initiation under stress allowing selective translation of stress-response proteins.

Irregularities in eIF2A function link to neurodegenerative diseases such as Alzheimer's disease and metabolic disorders like diabetes. These conditions often involve disruptions in the stress response pathways where eIF2A participates. The protein participates with others like PERK a kinase that phosphorylates eIF2α under endoplasmic reticulum stress contributing to disease-related changes in protein synthesis. By modulating translation under stress eIF2A becomes significant in these pathological contexts.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Functions in the early steps of protein synthesis of a small number of specific mRNAs. Acts by directing the binding of methionyl-tRNAi to 40S ribosomal subunits. In contrast to the eIF-2 complex, it binds methionyl-tRNAi to 40S subunits in a codon-dependent manner, whereas the eIF-2 complex binds methionyl-tRNAi to 40S subunits in a GTP-dependent manner.
See full target information EIF2A

Product promise

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