Rat RBP4 (Retinol Binding Protein 4, Plasma) 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 Rat RBP4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rat RBP4. 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 Rat RBP4, 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 Rat RBP4 in the samples is then determined by comparing the OD of the samples to the standard curve. Protein Function: Retinol-binding protein that mediates retinol transport in blood plasma. Delivers retinol from the liver stores to the peripheral tissues (PubMed:4708098). Transfers the bound all-trans retinol to STRA6, that then facilitates retinol transport across the cell membrane (By similarity) [The Uniprot Consortium]