Human ATF3 (Activating Transcription Factor 3) ELISA Kit

The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human ATF3. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human ATF3. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human ATF3, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human ATF3 in the samples is then determined by comparing the OD of the samples to the standard curve. Protein Function: This protein binds the cAMP response element (CRE) (consensus: 5'-GTGACGT[AC][AG]-3'), a sequence present in many viral and cellular promoters. Represses transcription from promoters with ATF sites. It may repress transcription by stabilizing the binding of inhibitory cofactors at the promoter , Activates transcription presumably by sequestering inhibitory cofactors away from the promoters , Stress-induced isoform, counteracts the transcriptional repression of isoform 1 [The Uniprot Consortium]