CD45.1 Mouse anti-Mouse, Brilliant Violet 421, Clone: A20, BD
Mouse Monoclonal Antibody
Manufacturer: BD Biosciences 563983
The A20 monoclonal antibody specifically binds to CD45 (Leukocyte Common Antigen) on all leukocytes of mouse strains expressing the CD45.1 alloantigen (eg, RIII, SJL/J, STS/A, DA). This alloantigen was originally named Ly-5.2, and this was the designation at the time that the antibody was characterized. The designation was later changed from Ly-5.2 to Ly-5.1 to conform with the convention that the .2 alloantigen designations be assigned to the C57BL/6 strain. mAb A20 has been reported not to react with leukocytes of most other mouse strains, which express the CD45.2 alloantigen. CD45 is a member of the Protein Tyrosine Phosphatase (PTP) family: Its intracellular (COOH-terminal) region contains two PTP catalytic domains, and the extracellular region is highly variable due to alternative splicing of exons 4, 5, and 6 (designated A, B, and C,respectively), plus differing levels of glycosylation. The CD45 isoforms detected in the mouse are cell type-, maturation-, and activation state-specific. The CD45 isoforms play complex roles in T-cell and B-cell antigen receptor signal transduction. The A20 antibody has been reported to inhibit some responses of B cells, from mice expressing the CD45.1 alloantigen, to antigens and LPS.
The antibody was conjugated to BD Horizon BV421 which is part of the BD Horizon Brilliant Violet family of dyes. With an Ex Max of 407-nm and Em Max at 421-nm, BD Horizon BV421can be excited by the violet laser and detected in the standard Pacific Blue filter set (eg, 450/50-nm filter). BD Horizon BV421conjugates are very bright, often exhibiting a 10 fold improvement in brightness compared to Pacific Blue conjugates.
|Brilliant Violet 421|
|Aqueous buffered solution containing BSA and ≤0.09% sodium azide.|
|Ly-5; Lyt4; CD45R; LCA; Ptprc; Protein tyrosine phosphatase receptor type C|
|SJL mouse thymocytes and splenocytes|
|Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.|
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