Principle of the Assay: This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to DAP6. Standards or samples are added to the appropriate micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for DAP6 and Avidin-Horseradish Peroxidase (HRP) conjugate is added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain DAP6, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm +/- 2 nm. The OD value is proportional to the concentration of DAP6. You can calculate the concentration of DAP6 in the samples by comparing the OD of the samples to the standard curve.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a multifunctional protein that resides in multiple locations in the nucleus and in the cytoplasm. It interacts with a wide variety of proteins, such as apoptosis antigen Fas, centromere protein C, and transcription factor erythroblastosis virus E26 oncogene homolog 1. In the nucleus, the encoded protein functions as a potent transcription repressor that binds to sumoylated transcription factors. Its repression can be relieved by the sequestration of this protein into promyelocytic leukemia nuclear bodies or nucleoli. This protein also associates with centromeres in G2 phase. In the cytoplasm, the encoded protein may function to regulate apoptosis. The subcellular localization and function of this protein are modulated by post-translational modifications, including sumoylation, phosphorylation and polyubiquitination. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2008]
Uniprot Description
DAXX: a transcriptional co-regulatory protein. Proposed to mediate activation of the JNK pathway and apoptosis via ASK1 in response to signaling from FAS and TGF-betaR2. Glucose deprivation activates the ASK1-SEK1-JNK1-HIPK1 pathway, relocalizing Daxx from the nucleus to the cytoplasm, where Daxx binds to ASK1, and subsequently leads to ASK1 oligomerization. Interaction with HSP27 may prevent interaction with TGF-betaR2 and ASK1 and block DAXX-mediated apoptosis. Seems to act as a transcriptional co- repressor and inhibits PAX3 and ETS1 through direct protein- protein interaction. Its transcription repressor activity is modulated by recruiting it to subnuclear compartments like the nucleolus or PML/POD/ND10 nuclear bodies through interactions with MCSR1 and PML, respectively. Two alternatively spliced isoforms have been described.
Protein type: Nucleolus; Apoptosis; Nuclear receptor co-regulator; Transcription, coactivator/corepressor
Chromosomal Location of Human Ortholog: 6p21.3
Cellular Component: heterochromatin; PML body; cytoplasm; nucleolus; cytosol; nucleus; chromosome, pericentric region
Molecular Function: protein homodimerization activity; histone binding; p53 binding; protein N-terminus binding; protein kinase binding; transcription factor binding; protein binding; enzyme binding; androgen receptor binding; ubiquitin protein ligase binding; heat shock protein binding; receptor signaling protein activity; transcription corepressor activity; protein kinase activator activity
Biological Process: viral reproduction; transcription, DNA-dependent; apoptosis; regulation of protein ubiquitination; activation of JNK activity; chromatin remodeling; nucleosome assembly; cytokinesis after mitosis; induction of apoptosis via death domain receptors; regulation of transcription, DNA-dependent; positive regulation of protein kinase activity; androgen receptor signaling pathway; positive regulation of protein amino acid phosphorylation; negative regulation of transcription, DNA-dependent