EIF2α Rabbit Polyclonal Antibody

• Background:

  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], 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., PTM:Substrate for at least 4 kinases: EIF2AK3/PERK, GCN2, HRI and PKR. Phosphorylation stabilizes the eIF-2/GDP/eIF-2B complex and prevents GDP/GTP exchange reaction, thus impairing the recycling of eIF-2 between successive rounds of initiation and leading to global inhibition of translation. In case of infection by vaccinia virus or rotavirus A, eIF2S1 phosphorylation state is modulated., similarity:Belongs to the eIF-2-alpha family., similarity:Contains 1 S1 motif domain., subunit:Heterotrimer composed of an alpha, a beta and a gamma chain. Component of an EIF2 complex at least composed of CUGBP1, CALR, CALR3, EIF2S1, EIF2S2, HSP90B1 and HSPA5.

• Product Name Alternative:

  EIF2S1; EIF2A; Eukaryotic translation initiation factor 2 subunit 1; Eukaryotic translation initiation factor 2 subunit alpha; eIF-2-alpha; eIF-2A; eIF-2alpha

• Gene Name:

  EIF2S1

• Gene ID:

  1965

• Swiss Prot:

  P05198

• Host:

  Rabbit

• Reactivity:

  Human, Mouse, Rat, Monkey, Fish

• Clonality:

  Polyclonal

• Conjugation:

  Unconjugated

• Applications:

  WB, IHC, ICC/IF, ELISA

• Purification:

  Affinity purification

• Dilution:

  WB 1:500-1:2000, IHC 1:100-1:300, ICC/IF 1:50-1:200, ELISA 1:5000-1:20000

• Form:

  Liquid

• Buffer:

  Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% New type preservative N.

• Modification:

  Unmodified

• Molecular Weight:

  38kDa

• Storage Conditions:

  Store at 4°C short term. Aliquot and store at -20°C for 12 months. Avoid freeze/thaw cycles.

• Isotype:

  IgG