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HIF-1 Alpha DNA Binding Activity assay kit product blog

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Posted on 2017-03-04 02:36:03 by mybiosource_staff
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Tags: Assay Kit; HIF-1 Alpha DNA Binding Activity; HIF-1 Alpha DNA Binding Activity assay kit;
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The HIF-1 Alpha DNA Binding Activity n/a (Catalog #MBS168165) is an Assay Kit and is intended for research purposes only. The product is available for immediate purchase.

To buy or view more detailed product information and pricing, please click on the technical datasheet page below:


(Or you can also download the PDF Manual for complete product instructions).

Please refer to the product datasheet for known applications of a given assay kit. We\'ve tested the HIF-1 Alpha DNA Binding Activity Assay Kit with the following immunoassay(s):
Typical Testing Data/Standard Curve (for reference only)
Typical Testing Data/Standard Curve (for reference only) HIF-1 Alpha DNA Binding Activity.

Principle of the Assay: The HIF-1 Alpha DNA Binding Activity Assay Kit is an ELISA for the measurement of activated HIF-1. A biotinylated double stranded DNA containing an HRE is first bound to the provided Streptavidin plate wells. Then protein samples are added to the DNA conjugated microplate. After a brief incubation, an anti-HIF-1 Alpha antibody is added, followed by an HRP conjugated secondary antibody, allowing for simple colorimetric detection by plate spectophotometry.

Background: Mammalian cells are able to sense low oxygen conditions and turn on a series of genes in response to the lack of oxygen. The hypoxia-inducible factor 1 transcriptional activator complex (HIF-1) is involved in the activation of several hypoxia-responsive genes including erythropoietin and VEGF. The HIF-1 complex is composed of two protein subunits: the constitutively expressed HIF-1b/ARNT (aryl hydrocarbon receptor nuclear translocator), and HIF-1 Alpha, the latter of which is not detected during normoxia since it is continually degraded by the ubiquitin proteasome system (UPS). In the presence of low oxygen conditions, however, HIF-1 Alpha is stabilized, accumulates, translocates from the cytosol to the nucleus, dimerizes with HIF-1b/ARNT, and becomes transcriptionally active. Activated HIF-1 complex then associates with hypoxic response elements (HREs) and binds transcriptional coactivators to induce gene expression. Tight regulation of the stability and function of HIF-1 is controlled by its post-translational modifications, such as hydroxylation, ubiquitination, acetylation, and phosphorylation. Under normal oxygen conditions, the post-translational modification of HIF-1 Alpha occurs within several domains: hydroxylation of two proline residues and acetylation of a lysine residue in its oxygen dependent degradation domain (ODDD) promote binding of HIF-1 with the von Hippel-Lindau (pVHL) ubiquitin E3 ligase complex. This pVHL complex modifies HIF-1 with ubiquitin, marking it for degradation by the 26S proteasome. Furthermore, hydroxylation of C-terminal asparagine residue in the c-terminal transactivation domain blocks association of HIF-1 with CBP/p300 and as a result inhibits HIF-1 transcriptional activity. Upon synthesis of HIF-1 Alpha, the protein is rapidly hydroxylated by a family of 2-oxoglutarate dioxygenases on proline 402 and 564. Hypoxic or chemical inactivation of these dioxygenases (which were later termed proline hydroxylase domains (PHDs)), leads to an increase in the half life of HIF-1 Alpha and subsequent activation of HIF-1 complex. HIF-1 Alpha DNA Binding Activity Assay Kit is an immunoassay developed for rapid detection of activated HIF-1 in any protein sample. Active HIF-1 complex is captured on a double stranded oligonucleotide containing an HRE that is attached to the well. HIF-1 Alpha is then detected with an anti-HIF-1 Alpha antibody followed by an HRP conjugated secondary antibody. Each kit provides sufficient reagents to perform up to a total of 96 assays, and can detect HIF-1 Alpha from human, mouse, or rat. The HIF-1 DNA Binding Activity Assay takes only 4.5 hours to complete compared to a standard 3 day electromobility shift (EMSA) method.

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