金山科研平台，产品价格货期咨询微信：jinshanbio Molecule Information: MS4A1/CD20 Long Name: Membrane-spanning 4-domains, Subfamily A, Member 1 Aliases: B1; Bp35; CD20; LEU-16; Ly-44; S7 Entrez Gene IDs: 931 (Human); 12482 (Mouse); 25316 (Rat) Background: MS4A1/CD20 MS4A1/CD20 is a 297 amino acid (aa) non-glycosylated type III membrane protein that is the founding member of the MS4A tetraspanning protein family. MS4A1/CD20 is expressed on pre-B, naïve and mature B lymphocytes and B-cell lymphomas. MS4A1/CD20 is associated with lipid rafts upon crosslinking, and appears to play a role in regulation of ion influx. The one extracellular segment of 48 aa shows 65% aa identity between human and mouse CD20.