Product Name
Phospho-EIF2S1 (S51) Recombinant Rabbit Monoclonal Antibody [SZ01-06] - BSA and Azide free
Antibody Type
Recombinant Rabbit monoclonal Antibody
Immunogen
Synthetic phospho-peptide corresponding to residues surrounding Ser51 of Human eIF-2a.
Target Molecular Weight
Predicted band size: 36 kDa
Positive Control
HeLa treated with 50nM Calyculin A for 3 hours whole cell lysate, NIH/3T3 treated with 100nM Calyculin A for 30 minutes whole cell lysate, C6 treated with 100nM Calyculin A for 30 minutes whole cell lysate, THP-1 cell lysate, C2C12 cell lysate, mouse spleen tissue, rat spleen tissue, human liver tissue, human pancreas tissue, mouse brain tissue, mouse placenta tissue, mouse pancreas tissue, human prostate carcinoma tissue, human breast carcinoma tissue, human colon carcinoma tissue, Hela.
Storage Instructions
Store at 2-8℃. Avoid freeze.
Purification Method
Protein A affinity purified.
Function
Phosphorylation of the eukaryotic initiation factor 2 (eIF2) α subunit is a well-documented mechanism to downregulate protein synthesis under a variety of stress conditions. Eukaryotic initiation factor 2 binds GTP and Met-tRNAi and transfers Met-tRNA to the 40S subunit to form the 43S preinitiation complex. eIF2 promotes a new round of translation initiation by exchanging GDP for GTP, a reaction catalyzed by eIF2B. Kinases that are activated by viral infection (PKR), endoplasmic reticulum stress (PERK/PEK), amino acid deprivation (GCN2), or heme deficiency (HRI) can phosphorylate the α subunit of eIF2. This phosphorylation stabilizes the eIF2-GDP-eIF2B complex and inhibits the turnover of eIF2B. Induction of PKR by IFN-γ and TNF-α induces potent phosphorylation of eIF2α at Ser51.
Background References
1. Montalbano R et al. Endoplasmic reticulum stress plays a pivotal role in cell death mediated by the pan-deacetylase inhibitor panobinostat in human hepatocellular cancer cells. Transl Oncol 6:143-57 (2013).
2. Kanai R et al. Effect of 34.5 deletions on oncolytic herpes simplex virus activity in brain tumors. J Virol 86:4420-31 (2012).
Sequence Similarity
Belongs to the WD repeat EIF2A family.
Tissue Specificity
Widely expressed. Expressed at higher level in pancreas, heart, brain and placenta.
Subcellular Location
Stress granule, Cytoplasm.
Synonyms
EIF 2 alpha antibody
EIF 2 antibody
EIF 2A antibody
EIF 2alpha antibody
eIF-2-alpha antibody
eIF-2A antibody
EIF-2alpha antibody
EIF2 alpha antibody
EIF2 antibody
EIF2A antibody
Expand
EIF 2 alpha antibody
EIF 2 antibody
EIF 2A antibody
EIF 2alpha antibody
eIF-2-alpha antibody
eIF-2A antibody
EIF-2alpha antibody
EIF2 alpha antibody
EIF2 antibody
EIF2A antibody
EIF2S1 antibody
Eukaryotic translation initiation factor 2 subunit 1 alpha 35kDa antibody
Eukaryotic translation initiation factor 2 subunit 1 alpha antibody
Eukaryotic translation initiation factor 2 subunit 1 antibody
Eukaryotic translation initiation factor 2 subunit alpha antibody
IF2A_HUMAN antibody
Collapse
-
☑ Cell treatment (CT)
This data was developed using ET1603-14, the same antibody clone in a different buffer formulation.
Western blot analysis of Phospho-EIF2S1 (S51) on different lysates with Rabbit anti-Phospho-EIF2S1 (S51) antibody (ET1603-14) at 1/2,000 dilution.
Lane 1: HeLa whole cell lysate (15 µg/Lane)
Lane 2: HeLa treated with 50nM Calyculin A for 3 hours whole cell lysate (15 µg/Lane)
Lane 3: NIH/3T3 whole cell lysate (15 µg/Lane)
Lane 4: NIH/3T3 treated with 100nM Calyculin A for 30 minutes whole cell lysate (15 µg/Lane)
Lane 5: C6 whole cell lysate (20 µg/Lane)
Lane 6: C6 treated with 100nM Calyculin A for 30 minutes whole cell lysate (20 µg/Lane)
Predicted band size: 36 kDa
Observed band size: 36 kDa
Exposure time: Lane 1-4: 2 minutes; Lane 5-6: 23 seconds;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (ET1603-14) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1:50,000 dilution was used for 1 hour at room temperature.
-
☑ Cell treatment (CT)
This data was developed using ET1603-14, the same antibody clone in a different buffer formulation.
Immunohistochemical analysis of paraffin-embedded human breast carcinoma tissue with Rabbit anti-Phospho-EIF2S1 (S51) antibody (ET1603-14) at 1/200 dilution.
A: Untreated human breast carcinoma tissue
B: λ-PPase treated human breast carcinoma tissue
C: Negative control
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET1603-14) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
-
☑ Cell treatment (CT)
This data was developed using ET1603-14, the same antibody clone in a different buffer formulation.
Immunohistochemical analysis of paraffin-embedded human colon carcinoma tissue with Rabbit anti-Phospho-EIF2S1 (S51) antibody (ET1603-14) at 1/200 dilution.
A: Untreated human colon carcinoma tissue
B: λ-PPase treated human colon carcinoma tissue
C: Negative control
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET1603-14) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
-
This data was developed using ET1603-14, the same antibody clone in a different buffer formulation.
Immunohistochemical analysis of paraffin-embedded mouse pancreas tissue with Rabbit anti-Phospho-EIF2S1 (S51) antibody (ET1603-14) at 1/200 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET1603-14) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
-
This data was developed using ET1603-14, the same antibody clone in a different buffer formulation.
Immunohistochemical analysis of paraffin-embedded mouse brain tissue with Rabbit anti-Phospho-EIF2S1 (S51) antibody (ET1603-14) at 1/200 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ET1603-14) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"