Phospho-EIF2S1 (Ser51) Monoclonal antibody

Phospho-EIF2S1 (Ser51) Monoclonal Antibody for WB, ELISA

Host / Isotype

Mouse / IgG1


Human, Rat, Mouse







Cat no : 68023-1-Ig


EIF 2, eIF 2 alpha, EIF 2A, EIF 2alpha, EIF2, EIF2A, EIF2S1 (Ser51), EIF2S1 S51, EIF2S1 Ser51, Phospho-EIF2S1 (Ser51)

Tested Applications

Positive WB detected inPC-3 cells, HeLa cells, Calyculin A treated HEK-293 cells, NIH/3T3 cells, HSC-T6 cells, Calyculin A treated HeLa cells, Calyculin A treated PC-3 cells, Calyculin A treated NIH/3T3 cells, Calyculin A treated HSC-T6 cells

Recommended dilution

Western Blot (WB)WB : 1:5000-1:50000
Sample-dependent, check data in validation data gallery

Product Information

68023-1-Ig targets Phospho-EIF2S1 (Ser51) in WB, ELISA applications and shows reactivity with Human, Rat, Mouse samples.

Tested Reactivity Human, Rat, Mouse
Host / Isotype Mouse / IgG1
Class Monoclonal
Type Antibody
Immunogen Peptide
Full Name eukaryotic translation initiation factor 2, subunit 1 alpha, 35kDa
Calculated molecular weight 36 kDa
Observed molecular weight36 kDa
GenBank accession numberNM_004094
Gene symbol EIF2S1
Gene ID (NCBI) 1965
Conjugate Unconjugated
Form Liquid
Purification Method Protein A purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.

Background Information

EIF2S1 is one subunit of the translation initiation factor EIF2, which catalyzes the first regulated step of protein synthesis initiation, promoting the binding of the initiator tRNA to 40S ribosomal subunits. 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. 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.


Product Specific Protocols
WB protocol for Phospho-EIF2S1 (Ser51) antibody 68023-1-IgDownload protocol
Standard Protocols
Click here to view our Standard Protocols