CD20/MS4A1 protein-VLP, Dog, a B lymphocyte membrane protein critical for calcium influx and essential for B lymphocyte development, differentiation, and activation. As a component of store-operated calcium (SOC) channels, it promotes calcium influx upon B cell receptor/BCR activation. CD20/MS4A1 Protein, Dog (HEK293, His, Nanodisc) is the recombinant dog-derived CD20/MS4A1 protein, expressed by HEK293, with C-His labeled tag.