Anti-Ago2/eIF2C2 Antibody Picoband®

Protein argonaute-2, also known as AGO2, is a protein that in humans is encoded by the EIF2C2 gene. This gene encodes a member of the Argonaute family of proteins which play a role in RNA interference. The encoded protein is highly basic, and contains a PAZ domain and a PIWI domain. It may interact with dicer1 and play a role in short-interfering-RNA-mediated gene silencing. Multiple transcript variants encoding different isoforms have been found for this gene.

Protein argonaute-2 ; Argonaute2 ; hAgo2;3.1.26.n2 ; Argonaute RISC catalytic component 2; Eukaryotic translation initiation factor 2C 2 ; eIF-2C 2 ; eIF2C 2 ; PAZ Piwi domain protein; PPD; Protein slicer ; AGO2; EIF2C2

Ubiquitously expressed, highest levels were found in brain and lung. Isoform 5 is expressed at higher levels in astrocytomas as compared to normal brain tissue and expression increases strikingly with the severity of the tumor, being higher in the most aggressive tumors. .

Required for RNA-mediated gene silencing (RNAi) by the RNA-induced silencing complex (RISC) . The 'minimal RISC' appears to include AGO2 bound to a short guide RNA such as a microRNA (miRNA) or short interfering RNA (siRNA) . These guide RNAs RISC to complementary mRNAs that are targets for RISC-mediated gene silencing. The precise mechanism of gene silencing depends on the degree of complementarity between the miRNA or siRNA and its target. Binding of RISC to a perfectly complementary mRNA generally results in silencing due to endonucleolytic cleavage of the mRNA specifically by AGO2. Binding of RISC to a partially complementary mRNA results in silencing through inhibition of translation, and this is independent of endonuclease activity. May inhibit translation initiation by binding to the 7-methylguanosine cap, thereby preventing the recruitment of the translation initiation factor eIF4-E. May also inhibit translation initiation via interaction with EIF6, which itself binds to the 60S ribosomal subunit and prevents its association with the 40S ribosomal subunit. The inhibition of translational initiation leads to the accumulation of the affected mRNA in cytoplasmic processing bodies (P-bodies), where mRNA degradation may subsequently occur. In some cases RISC-mediated translational repression is also observed for miRNAs that perfectly match the 3' untranslated region (3'-UTR) . Can also up-regulate the translation of specific mRNAs under certain growth conditions. Binds to the AU element of the 3'-UTR of the TNF (TNF-alpha) mRNA and up-regulates translation under conditions of serum starvation. Also required for transcriptional gene silencing (TGS), in which short RNAs known as antigene RNAs or agRNAs the transcriptional repression of complementary promoter regions. .

1. Entrez Gene: EIF2C2 eukaryotic translation initiation factor 2C, 2. 2. Koesters R, Adams V, Betts D, Moos R, Schmid M, Siermann A, Hassam S, Weitz S, Lichter P, Heitz PU, von Knebel Doeberitz M, Briner J (Dec 1999) . Human eukaryotic initiation factor EIF2C1 gene: cDNA sequence, genomic organization, localization to chromosomal bands 1p34-p35, and expression. Genomics 61 (2) : 210–8. 3. Sasaki T, Shiohama A, Minoshima S, Shimizu N (Aug 2003) . Identification of eight members of the Argonaute family in the human genome small star, filled. Genomics 82 (3) : 323–30.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.