Work with LifeSpan to design a custom immunohistochemistry to address your specific biological question. Outsource the entire localization process without having to
worry about finding and characterizing target specific antibodies, sourcing and validating difficult-to-find tissues, and having the ability to interpret the resulting
immunostaining in relation to complex human pathologies.
TCR Screening Services
Test your therapeutic antibodies in immunohistochemistry against a broad panel of normal frozen human tissue types in order to determine potential unintended binding.
Our non-GLP TCR services are designed on the FDA recommendation outlined in their "Points to Consider in the Manufacture and Testing of Monoclonal Antibody Products for Human Use".
EIF2S1 Recombinant Human produced in E.Coli is a single, non-glycosylated polypeptide chain containing 335 amino acids (1-315 a.a.) and having a molecular mass of 38.2 kDa. The EIF2S1 is fused to a 20 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.
Greater than 85% by SDS-PAGE
20 mM Tris-HCl, pH 8, 20 mM NaCl, 10% glycerol.
Store lyophilized at 4°C. Once reconstituted, aliquot and store at -20°C. Avoid freeze-thaw cycles.
EIF2 is a translation initiation factor that catalyzes the first regulated step of protein synthesis, promoting the binding of the initiator tRNA to 40s ribosomal subunits. eIF2 is composed of 3 non identical subunits, alpha, beta and gamma. Binding occurs as a ternary complex of methionyl-tRNA, eIF2 and GTP. The rate of complex formation is modulated by the phosphorylation state of eIF2alpha. Phosphorylation of eIF2alpha has been shown to occur in response to heat shock and hypoxic stress.