Human CD45 PerCP‑conjugated Antibody
Catalog # FAB1430C | R&D Systems, Inc. a Bio-Techne Brand
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Product Summary for Human CD45 PerCP‑conjugated Antibody
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Scientific Data Images for Human CD45 PerCP‑conjugated Antibody
Detection of CD45 in Human Blood Lymphocytes by Flow Cytometry.
Human peripheral blood lymphocytes were stained with Mouse Anti-Human CD45 PerCP-conjugated Monoclonal Antibody (Catalog # FAB1430C, filled histogram) or isotype control antibody (Catalog # IC002C, open histogram). View our protocol for Staining Membrane-associated Proteins.Applications for Human CD45 PerCP‑conjugated Antibody
Flow Cytometry
Sample: Human peripheral blood lymphocytes
Formulation, Preparation and Storage
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Stability & Storage
- 12 months from date of receipt, 2 to 8 °C as supplied.
Background: CD45
CD45, previously called LCA (leukocyte common antigen), T200, or Ly5 in mice, is member C of the class 1 (receptor‑like) protein tyrosine phosphatase family (PTPRC) (1, 2). It is a variably glycosylated 180‑220 kDa transmembrane protein that is abundantly expressed on all nucleated cells of hematopoietic origin (1‑3). CD45 has several isoforms, expressed according to cell type, developmental stage and antigenic exposure (1‑5). The longest form, CD45RABC (called B220 in mouse), is expressed on B lymphocytes (5). The CD45RABC cDNA encodes 1304 amino acids (aa), including a 23 aa signal sequence, a 552 aa extracellular domain containing the splicing region, a cysteine‑rich region and two fibronectin type III domains, a 22 aa transmembrane sequence, and a 707 aa cytoplasmic domain that contains two phosphatase domains, D1 and D2. Only D1 has phosphatase activity. CD45R0 is the shortest form, lacking exons 4, 5 and 6 which encode aa 32‑191. It is expressed on memory cells, while intermediate sizes are expressed on other T cells (3, 4, 6). CD45 has been best studied in T cells, where it determines T cell receptor signaling thresholds (3, 6‑8). CD45 is moved into or out of the immunological synapse (IS) membrane microdomain depending on the relative influence of interaction with the extracellular galectin lattice or the intracellular actin cytoskeleton (9, 10). Galectin interaction can be fine‑tuned by varying usage of the heavily O‑glycosylated spliced regions and sialylation of N‑linked carbohydrates (4, 9). Within the IS, CD45 dephosphorylates and negatively regulates the Src family kinase, Lck (8‑10). In other leukocytes, CD45 influences differentiation and links immunoreceptor signaling with cytokine secretion and cell survival, partially overlapping in function with DEP‑1/CD148 (11‑14). CD45 deletion causes in severe immunodeficiency, while point mutations may be associated with autoimmune disorders (6, 7).
References
- Anderson, J.N. et al. (2004) FASEB J. 18:8.
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- Hermiston, M.L. et al. (2003) Annu. Rev. Immunol. 21:107.
- Earl, L.A. and L.G. Baum (2008) Immunol. Cell Biol. 86:608.
- Ralph, S.J. et al. (1987) EMBO J. 6:1251.
- Falahti, R. and D. Leitenberg (2008) J. Immunol. 181:6082.
- Tchilian, E.Z. and P.C.L. Beverley (2006) Trends Immunol. 27:146.
- McNiell, L. et al. (2007) Immunity 27:425.
- Chen, I-J. et al. (2007) J. Biol. Chem. 282:35361.
- Freiberg, B.A. et al. (2002) Nat. Immunol. 3:911.
- Zhu, J.W. et al. (2008) Immunity 28:183.
- Huntington, N.D. et al. (2006) Nat. Immunol. 7:190.
- Hesslein, D.G. et al. (2006) Proc. Natl. Acad. Sci. USA 103:7012.
- Cross, J.L. et al. (2008) J. Immunol. 180:8020.
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Product Documents for Human CD45 PerCP‑conjugated Antibody
Product Specific Notices for Human CD45 PerCP‑conjugated Antibody
For research use only
FAQs for Human CD45 PerCP‑conjugated Antibody
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Q: We would like to order a CD45 antibody to stain immune cells that were isolated from a ligated sciatic nerve of mice with double immunofluorescence (using PFA-fixed tissue on slides). Which of the following rat monoclonal CD45 antibodies would you recommend: 30-F11, IBL-3/16 or 5C16?
A: I would recommend clone 30-F11. As clone IBL-3/16 has not yet been validated for IHC-P application, we would not be able to guarantee its workability on PFA-fixed tissue. Although both other clones i.e. 30-F11 and 5C16, would be good for your samples, CD45 30-F11 # NB100-77417 is a well known clone that offers more flexibility around protocol because of availability of its conjugated forms. It would be advantageous to use a conjugated primary as you are planning for double-immunostaining procedure.
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Q: I cannot find any anti-mouse CD45RO for FACS. Have any of your anti-Human CD45RO been tested on mouse T cells?
A: Unfortunately, none of our CD45RO antibodies for Flow Cytometry have been validated on mouse. If you would be interested in testing the antibody on mouse, we would recommend Our Innovators Reward Program. Under the terms and conditions of this program we would be happy to provide you with a credit of equal or lesser value, in exchange for your online review including an image of either positive or negative staining for testing in a new species and/or application. Please contact us at innovators@novusbio.com with any questions regarding this program.