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Read our guarantee »Products:Epigenetics and Nuclear Signaling >> DNA / RNA >> Translation >> Regulation
Anti-EIF2S1 antibody [EIF2a]
See all EIF2S1 products (14) ...
Mouse monoclonal [EIF2a] to EIF2S1
This antibody recognizes the alpha subunit of eukaryotic translation initiation factor 2 (eIF-2A).
ICC/IF, WB, IHC-Pmore details
Reacts with
Mouse, Rat, Human
Recombinant full length protein (Human).
not mapped.
Human Jurkat, CEM and HeLa cells, mouse 3T3L1 and rat PC-12 cells.
Liquid
Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
Preservative: 0.1% Sodium Azide
Constituents: PBS, pH 7.4
Concentration information loading...
Protein A purified
Purified from ascites by Protein A/G chromatography.
Monoclonal
EIF2a
IgG1
Our Abpromise guarantee covers the use of ab5369 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
ICC/IF: Use a concentration of 5 µg/ml
WB: 1/500 - 1/1000.Detects a band of approximately 36 kDa (predicted molecular weight: 36 kDa).
IHC-P: Use a concentration of 2 µg/mlPerform heat mediated antigen retrieval before commencing with IHC staining protocol.
Functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B.
Belongs to the eIF-2-alpha family.
Contains 1 S1 motif domain.
Substrate for at least 4 kinases: EIF2AK3/PERK, GCN2, HRI and PKR. Phosphorylation stabilizes the eIF-2/GDP/eIF-2B complex and prevents GDP/GTP exchange reaction, thus impairing the recycling of eIF-2 between successive rounds of initiation and leading to global inhibition of translation. In case of infection by vaccinia virus or rotavirus A, eIF2S1 phosphorylation state is modulated.
Cytoplasmic granule. The cytoplasmic granules are stress granules which are a dense aggregation in the cytosol composed of proteins and RNAs that appear when the cell is under stress. Co-localizes with NANOS3 in the stress granules.
Target information above from: UniProt accessionP05198
The UniProt Consortium
The Universal Protein Resource (UniProt) in 2010
Nucleic Acids Res. 38:D142-D148 (2010).
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - EIF2S1 antibody [EIF2a] (ab5369)
![Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - EIF2S1 antibody [EIF2a] (ab5369)](/ps/datasheet/images/5/ab5369/eIF2-alpha-Primary-antibodies-ab5369-1.jpg)
Ab5369 staining EIF2S1 in human placenta. Staining is localised to the cytoplasm.
Left panel: with primary antibody at 2 ug/ml. Right panel: isotype control.
Sections were stained using an automated system DAKO Autostainer Plus , at room temperature. Sections were rehydrated and antigen retrieved with the Dako 3-in-1 AR buffer citrate pH 6.0 in a DAKO PT Link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 minutes. They were then blocked with Dako Protein block for 10 minutes (containing casein 0.25% in PBS), then incubated with primary antibody for 20 minutes, and detected with Dako Envision Flex amplification kit for 30 minutes. Colorimetric detection was completed with diaminobenzidine for 5 minutes. Slides were counterstained with Haematoxylin and coverslipped under DePeX. Please note that for manual staining we recommend to optimize the primary antibody concentration and incubation time (overnight incubation), and amplification may be required.
Immunocytochemistry/ Immunofluorescence-EIF2S1 antibody [EIF2a](ab5369)
](/ps/datasheet/images/5/ab5369/EIF2S1-Primary-antibodies-ab5369-2.jpg)
ICC/IF image of ab5369 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab5369, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-mouse IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
This product has been referenced in:
See all 13 publications for this product
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![Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - EIF2S1 antibody [EIF2a] (ab5369)](/ps/datasheet/images/5/ab5369/eIF2-alpha-Primary-antibodies-ab5369-1.jpg)
Ab5369 staining EIF2S1 in human placenta. Staining is localised to the cytoplasm.
Left panel: with primary antibody at 2 ug/ml. Right panel: isotype control.
Sections were stained using an automated system DAKO Autostainer Plus , at room temperature. Sections were rehydrated and antigen retrieved with the Dako 3-in-1 AR buffer citrate pH 6.0 in a DAKO PT Link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 minutes. They were then blocked with Dako Protein block for 10 minutes (containing casein 0.25% in PBS), then incubated with primary antibody for 20 minutes, and detected with Dako Envision Flex amplification kit for 30 minutes. Colorimetric detection was completed with diaminobenzidine for 5 minutes. Slides were counterstained with Haematoxylin and coverslipped under DePeX. Please note that for manual staining we recommend to optimize the primary antibody concentration and incubation time (overnight incubation), and amplification may be required.
](/ps/datasheet/images/5/ab5369/EIF2S1-Primary-antibodies-ab5369-2.jpg)
ICC/IF image of ab5369 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab5369, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-mouse IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
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