The translation initiation factor EIF2 catalyzes the first regulated step of protein synthesis initiation, promoting the binding of the initiator tRNA to 40S ribosomal subunits. Binding occurs as a ternary complex of methionyl-tRNA, EIF2, and GTP. EIF2 is composed of 3 nonidentical subunits, the 36-kD EIF2-alpha subunit (EIF2S1), the 38-kD EIF2-beta subunit (EIF2S2; MIM 603908), and the 52-kD EIF2-gamma subunit (EIF2S3; MIM 300161). The rate of formation of the ternary complex is modulated by the phosphorylation state of EIF2-alpha (Ernst et al., 1987 [PubMed 2948954]).[supplied by OMIM].
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HEK293T cells were transfected with the pCMV6-ENTRY control (Left lane) or pCMV6-ENTRY EIF2S1 (RC200368, Right lane) cDNA for 48 hrs and lysed. Equivalent amounts of cell lysates (5 ug per lane) were separated by SDS-PAGE and immunoblotted with anti-EIF2S1.
Immunohistochemical staining of paraffin-embedded Adenocarcinoma of Human colon tissue using anti-EIF2S1 mouse monoclonal antibody. (TA501374, Dilution 1:50)
Immunohistochemical staining of paraffin-embedded Carcinoma of Human liver tissue using anti-EIF2S1 mouse monoclonal antibody. (TA501374, Dilution 1:50)
Immunohistochemical staining of paraffin-embedded Adenocarcinoma of Human ovary tissue using anti-EIF2S1 mouse monoclonal antibody. (TA501374, Dilution 1:50)
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