|Detection of Human CD79B by Western Blot. Western blot shows lysates of Nalm‑6 human Pre-B acute lymphocytic leukemia cell line. PVDF membrane was probed with 0.5 µg/mL of Sheep Anti-Human CD79B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6620) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for CD79B at approximately 40kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.|
|Detection of CD79B in Human peripheral blood lymphocytes by Flow Cytometry. Human peripheral blood lymphocytes were stained with Sheep Anti-Human CD79B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6620) followed by NorthernLights™ 637-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # NL011) and Mouse Anti-Human CD19 PE-conjugated Monoclonal Antibody (Catalog # FAB4867P). Quadrant markers were set based on control antibody staining (Catalog # 5-001-A).|
CD79B (also known as B29, Ig beta and B cell antigen receptor complex-associated protein beta -chain) is a 36-40 kDa member of the Ig-Superfamily. It is expressed on B cells, and forms a covalent heterodimer with 44-49 kDa CD79A. This complex interacts noncovalently with membrane Ig, forming the B cell antigen receptor. Within this complex, membrane Ig detects antigen while CD79A:B initiates signaling. Mature human CD79B is a 201 amino acid (aa) type I tranamembrane glycoprotein (aa 29‑229). It contains an extracellular region with one V-type Ig-like domain (aa 38-138) and an ITAM-containing cytoplasmic domain (aa 181-229). There is an alternative splice form that shows a deletion of aa 41-144 and appears after B cell activation. Human CD79A and B share only 26% aa identity. Over aa 29-159, human CD79B shares 54% aa identity with mouse CD79B.