OPN4 ELISA kits are immunoassay tools for the measurement of the protein opsin 4, which is encoded by the OPN4 gene in humans. Functionally, this protein is a reported photoreceptor that binds cis-retinaldehydes. The canonical protein structure is reported to have an amino acid length of 478 residues, a mass of 52.6 kDa, and is a member of the G-protein coupled receptor 1 protein family. It is known to be localized in the cell membrane and is reported to be expressed in the retina. As many as 2 protein isoforms have been reported. Other alias names for this target include melanopsin.
The detection range for different OPN4 ELISA kits can vary, with some assays measuring target concentrations as low as 20 ng/L and as high as 5000 pg/mL. Click on the products below for more detailed ELISA kit information, such as target reactivity and assay sensitivity.