Anti-phospho-EIF2A (pS51) (recombinant antibody), clone RM298

Antibody in PBS with 50% Glycerol, 1% BSA and 0.09% sodium azide. This antibody reacts to human eIF-2a (Eukaryotic translation initiation factor 2 subunit alpha) only when phosphorylated at Ser51. There is no cross-reactivity to eIF-2a without phosphorylation at Ser51. Protein function: 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. [The UniProt Consortium]