磷酸化蛋白激酶R抗体

英文名称    Phospho-PKR (Thr446)    

中文名称    磷酸化蛋白激酶R抗体    

别    名    PKR(Phospho-Thr446); double-stranded RNA-dependent Protein Kinase; interferon-induced, double-stranded RNA-activated protein kinase isoform a; protein kinase, interferon-inducible double stranded RNA dependent; interferon-inducible elF2alpha kinase; double stranded RNA activated protein kinase; p68 kinase; eIF-2A protein kinase 2; P1/eIF-2A protein kinase; protein kinase RNA-activated; interferon-inducible RNA-dependent protein kinase; EIF2AK2; EIF2AK1; MGC126524; PKR; PRKRv; E2AK2_HUMAN.    

磷酸化蛋白激酶R抗体      

说 明 书    0.1ml      

产品类型    磷酸化抗体     

研究领域    肿瘤  免疫学  信号转导  细胞凋亡  转录调节因子  激酶和磷酸酶      

抗体来源    Rabbit    

克隆类型    Polyclonal    

交叉反应    Human,     

产品应用    WB=1:100-500 ELISA=1:500-1000 IP=1:20-100 IHC-P=1:100-500 IHC-F=1:100-500 IF=1:100-500 （石蜡切片需做抗原修复） 
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.    

分 子 量    62kDa    

性    状    Lyophilized or Liquid    

浓    度    1mg/1ml    

免 疫 原    KLH conjugated Synthesised phosphopeptide derived from human PKR around the phosphorylation site of Thr446    

亚    型    IgG    

纯化方法    affinity purified by Protein A    

储 存 液    0.01M PBS, pH 7.4 with 10 mg/ml BSA and 0.1% Sodium azide    

保存条件    Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.    

磷酸化蛋白激酶R抗体   

PubMed    PubMed    

产品介绍    background:
PKR is an interferon-inducible serine/threonine specific protein kinase. It is widely expressed in eukaryotic organisms and activated by double stranded RNA. Activation of PKR by dsRNAs leads to autophosphorylation at multiple sites. Phosphorylation of Thr446 and Thr451 in the PKR activation loop is required in vivo and in vitro for high level kinase activity. PKR phosphorylates its natural substrate, the alpha subunit of eukaryotic protein synthesis initiation factor 2 (EIF2 alpha), leading to the inhibition of protein synthesis. PKR is also involved in TLR signaling and mediates apoptosis in fibroblasts in response to viral infection and inflammatory cytokines, and also activates IKK and NFKB, thereby suppressing apoptosis. Recently, it has been reported that PKR also phosphorylates human p53 on serine 392. PKR might play a role in ER stress-induced apoptosis and in Alzheimer's disease. Alzheimer cases show prominent PKR activation in association with neuritic plaques and pyramidal neurons in the hippocampus and neocortex. 

Function:
Following activation by double-stranded RNA in the presence of ATP, the kinase becomes autophosphorylated and can catalyze the phosphorylation of the translation initiation factor EIF2S1, which leads to an inhibition of the initiation of protein synthesis. Double-stranded RNA is generated during the course of a viral infection. In adddition to serine/threonine-protein kinase activity, also has tyrosine-protein kinase activity: phosphorylates CDK1 upon DNA damage. CDK1 phosphorylation triggers CDK1 polyubiquitination and subsequent proteolysis, thus leading to G2 arrest.

Subunit:
Homodimer. Interacts with STRBP (By similarity). Interacts with DNAJC3. Inhibited by direct interaction with viral proteins such as HCV E2, HCV NS5A and influenza A NS1. Activated by the interaction with HIV-1 Tat (By similarity). Forms a complex with FANCA, FANCC, FANCG and HSP70.

Post-translational modifications:
Autophosphorylated on several Ser and Thr residues. Autophosphorylation of Thr-451 is dependent on Thr-446 and is stimulated by dsRNA binding and dimerization. Autophosphorylation apparently leads to the activation of the kinase.

Similarity:
Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. GCN2 subfamily. 
Contains 2 DRBM (double-stranded RNA-binding) domains. 
Contains 1 protein kinase domain.

Gene ID:
5610

Database links:

Entrez Gene: 5610 Human

Omim: 176871 Human

SwissProt: P19525 Human

SwissProt: Q52M43 Human

Unigene: 131431 Human

Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.    

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