Inhibits protein synthesis at the translation initiation level, in response to various stress conditions, including oxidative stress, heme deficiency, osmotic shock and heat shock. Exerts its function through the phosphorylation of EIF2S1 at \\\\\\'Ser-48\\\\\\' and \\\\\\'Ser-51\\\\\\', thus preventing its recycling. Binds hemin forming a 1:1 complex through a cysteine thiolate and histidine nitrogenous coordination. This binding occurs with moderate affinity, allowing it to sense the heme concentration within the cell. Thanks to this unique heme-sensing capacity, plays a crucial role to shut off protein synthesis during acute heme-deficient conditions. In red blood cells (RBCs), controls hemoglobin synthesis ensuring a coordinated regulation of the synthesis of its heme and globin moieties. Thus plays an essential protective role for RBC survival in anemias of iron deficiency. Similarly, in hepatocytes, involved in heme-mediated translational control of CYP2B and CYP3A and possibly other hepatic P450 cytochromes. May also contain ER stress during acute heme-deficient conditions (By similarity).

Eukaryotic translation initiation factor 2-alpha kinase 1 (EC 2.7.11.1) (Heme-controlled repressor) (HCR) (Heme-regulated eukaryotic initiation factor eIF-2-alpha kinase) (Heme-regulated inhibitor) (hHRI) (Hemin-sensitive initiation factor 2-alpha kinase) EIF2AK1 HRI KIAA1369 PRO1362

Human, Rat

WB,IHC,IF,ICC,ELISA

WB 1:500-1:5000
IHC 1:20-1:200
IF 1:50-1:200
ICC 1:100-1:400
ELISA 1:5000-1:20000

71.106 kDa ;

EIF2AK1 HRI KIAA1369 PRO1362

q9bqi3

https://www.uniprot.org/uniprotkb/q9bqi3

Recombinant Human Eukaryotic translation initiation factor 2-alpha kinase 1 protein (1-86AA)

Rabbit

Polyclonal

IgG

Epigenetics and Nuclear Signaling; Signal transduction

>95%, Protein G purified

Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4

Store at -20°C. Do not aliquot the antibody