Description
Description: This Human SLAM family member 7 (SLAMF7) ELISA Kit employs a two-site sandwich ELISA to quantitate SLAMF7 in samples. An antibody specific for SLAMF7 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any SLAMF7 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for SLAMF7 is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of SLAMF7 bound in the initial step. The color development is stopped and the intensity of the color is measured.
Background: Sequence analysis predicted that the 335-amino acid transmembrane protein has a 225-residue extracellular domain, which has 7 putative N-linked glycosylation sites, and an 85-amino acid cytoplasmic domain, which contains 2 of the consensus tyrosine motifs and a third C-terminal tyrosine motif that has phe instead of thr. Functional analysis indicated that CRACC mediates lysis that is in addition to that mediated by NKP46 or CD16. Further analysis determined that, unlike CD244, cytotoxicity mediated by CRACC or NKP46 is SAP-independent and that CRACC triggers ERK activation. Immunoblot analysis showed that CRACC is tyrosine phosphorylated in activated NK cells and is associated with 19- and 39-kD proteins