The 2D1 antibody reacts with human CD45, one of the most abundant hematopoietic markers and one that is expressed on all leukocytes (the Leukocyte Common Antigen, LCA). CD45 is a protein tyrosine phosphatase existing in several isoforms, each being generated and expressed in cell-specific patterns. With its broad cell distribution, CD45 is critical for many leukocyte functions, regulating signal transduction and cell activation associated with the T cell receptor, B cell receptor, and IL-2 receptor. Other forms of CD45, with restricted cellular expression, include CD45R (B220), CD45RA, CD45RB, and CD45RO.
The 2D1 antibody is widely used as a marker for human CD45 expression on peripheral blood T cells, B cells, monocytes, macrophages, and NK cells.
|Name||FITC Anti-Human CD45 (2D1)|
|Alternative Names||Leukocyte Common Antigen, LCA, Ly-5, Hle-1|
|Isotype||Mouse IgG1, kappa|
|Citations*||Bradstock KF, Janossy G, Pizzolo G, Hoffbrand AV, McMichael A, Pilch JR, Milstein C, Beverley P and Bollum FJ. 1980. J. Natl. Cancer Inst. 65(1): 33-42.
Schwinzer R. in Knapp W, Dorken B, et al. eds. 1989. Leucocyte Typing IV: White Cell Differentiation Antigens. Oxford University Press. New York. p. 628-634.
Nieminen JK, Sipponen T, Färkkilä M and Vaarala O. 2014. Clin. Exp. Immunol. 177(1): 190-202. (Flow Cytometry)
Pitosa B, Wolska-Kunierz B, Pac M, Siewiera K, Gakowska E and Bernatowska E. 2010. Cytometry Part B. 78B: 372-381. (Flow Cytometry)
Application Key:FC = Flow Cytometry; FA = Functional Assays; ELISA = Enzyme-Linked Immunosorbent Assay; ICC = Immunocytochemistry; IF = Immunofluorescence Microscopy; IHC = Immunohistochemistry; IHC-F = Immunohistochemistry, Frozen Tissue; IHC-P = Immunohistochemistry, Paraffin-Embedded Tissue; IP = Immunoprecipitation; WB = Western Blot; EM = Electron Microscopy
*Tonbo Biosciences tests all antibodies by flow cytometry. Citations are provided as a resource for additional applications that have not been validated by Tonbo Biosciences. Please choose the appropriate format for each application and consult the Materials and Methods section for additional details about the use of any product in these publications.