CD21 Recombinant Rabbit monoclonal Antibody IgG
Fig1: Western blot analysis of CD21 on different lysates using anti-CD21 antibody at 1/1,000 dilution.
Lane 1: Daudi
Lane 2: Raji
Fig2: ICC staining CD21 in HepG2 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
Fig3: ICC staining CD21 in A549 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
Host Species; Species ReactivityRabbit; Human, Mouse
Application SummaryWB, ICC, IHC, IP, FC
Purification; FormulationProA affinity purified; 1*TBS (pH7.4), 1%BSA, 40%Glycerol. Preservative: 0.05% Sodium Azide.; Liquid form.
ALTnamesComplement receptor type 2, Complement C3d receptor, Epstein-Barr virus receptor, CD_antigen: CD21
BackgroundCD21 is a type I integral membrane glycoprotein that serves as a receptor for the C3d complement fragment and for the Epstein-Barr virus. It plays a role in B cell activation and proliferation and undergoes phosphorylation after B cell activation with phorbol esters. CD21 is expressed on mature B cells, follicular dendritic cells, pharyngeal and cervical epithelial cells and a subset of thymocytes. The adaptive immune response is tightly regulated to limit responding cells in an antigen-specific manner. On B cells, co-receptors CD21/CD19 modulate the strength of B cell Ag receptor (BCR) signals, thereby influencing cell fate. Complement receptor (CR) type 2 (CR2/ CD21) is normally expressed during the immature and mature stages of B cell development. In association with CD19, CR21 plays an important role in enhancing mature B cell responses to foreign antigens.(ET1610-61)