The KAI1 ELISA kits listed below are analytical tools for measuring concentrations of KAI1 in various samples. KAI1 is an alternative name for the human CD82 gene, which encodes the protein, CD82 molecule. The target protein is reported to associate with CD4 or CD8 and delivers costimulatory signals for the TCR/CD3 pathway. Structurally, the CD82 protein is 267 amino acid residues in length and 29.6 kilodaltons in mass. However, as many as 2 protein isoforms have been identified. It is localized to the cell membrane of the cell. In terms of tissue specificity, it is reported to have lymphoid specific expression. This protein is known to be glycosylated. Other names for this target antigen include 4F9, 4F9, and C33. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.