Aliases for EIF2S1 Gene
External Ids for EIF2S1 Gene
Previous HGNC Symbols for EIF2S1 Gene
Previous GeneCards Identifiers for EIF2S1 Gene
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, Feb 2010]
GeneCards Summary for EIF2S1 Gene
EIF2S1 (Eukaryotic Translation Initiation Factor 2, Subunit 1 Alpha, 35kDa) is a Protein Coding gene. Diseases associated with EIF2S1 include wolcott-rallison syndrome. Among its related pathways are Apoptotic Pathways in Synovial Fibroblasts and Nanog in Mammalian ESC Pluripotency. GO annotations related to this gene include translation initiation factor activity and ribosome binding.
UniProtKB/Swiss-Prot for EIF2S1 Gene
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
Eukaryotic translation initiation factor 2A (eIF2A) is involved in the first step of the initiation of protein synthesis. It forms a complex with GTP and initiator tRNA. EIF2 is composed of three subunits, namely EIF2-alpha (EIF2S1), EIF2-beta (EIF2S2) and EIF2-gamma (EIF2S3).