Anti-Human/Mouse CD45R / B220 Antibody [RA3-6B2]

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Species: Human and Mouse
Tested Applications: Flow Cytometry
Available Conjugates: APC ;Unconjugated ;APC-Cy7 ;Biotin ;FITC ;PerCP-Cy5.5 ;PE ;PE-Cy5 ;PE-Cy7 ;Qfluor 710 ;V450
Isotype: Rat IgG2a kappa
Mass Spec Validated?: Not MS Validated

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Datasheets and Documentation
Product Datasheet
SKU: QAB41-APC-25ug
CD45R / B220 General Information
Alternate Names
Ly-5, Lyt-4, T200
Curated Database and Bioinformatic Data
Gene SymbolPtprc
Entrez Gene ID19264
Ensemble Gene IDENSMUSG00000026395
RefSeq Protein Accession(s)NP_035340, XP_006529324, XP_006529321, XP_006529323, NP_001104786, XP_006529320, XP_006529322, XP_006529325, NP_001255215
RefSeq mRNA Accession(s)XM_006529259, XM_006529262, NM_011210, XM_006529260, NM_001111316, XM_006529257, XM_006529258, XM_006529261, NM_001268286
RefSeq Genomic Accession(s)NC_000067
UniProt ID(s)S4R1M0, S4R1S4, S4R2V1, Q8C6Q7
UniGene ID(s)S4R1M0, S4R1S4, S4R2V1, Q8C6Q7
Cosmic ID(s)Ptprc
KEGG Gene ID(s)mmu:19264
General Description of CD45R / B220.
The RA3-6B2 antibody reacts with the human and mouse CD45 isoform known as CD45R, or B220, a protein tyrosine phosphatase of 220 kDa. CD45 is one of the most abundant hematopoietic markers, and is expressed on all leukocytes (the Leukocyte Common Antigen, LCA). Various isoforms are generated and expressed in cell-specific patterns, all critical for leukocyte function. In mouse, the CD45R/B220 isoform is predominantly found on B cells, at varying levels on all stages from pro-B cells to activated B cells, and may also be detected on certain T cell and NK cell subsets. It is of note that B220 is not similarly expressed on human B cells, where it appears to be differentiation-specific and therefore expressed on only some B cell subsets. Other forms of CD45 with restricted cellular expression include CD45RA, CD45RB, CD45RO and several others.The RA3-6B2 antibody is one of the most consistently used leukocyte markers for B cells, T cell subsets and NK cell subsets in human and mouse. This antibody has also been reported as cross-reactive with feline CD45R/B220.

Human and Mouse Anti-CD45R / B220 Antibody Product Attributes

Species: Human and Mouse
Cross Reactivity: cat
Tested Applications: Flow Cytometry.
Application Notes: See Product Datasheet for Recommended Dilution Range. Requires Experimental Optimization
Clonality: Monoclonal Antibody
Anti-CD45R / B220 Antibody Clone: RA3-6B2
Clone RA3-6B2 Host and Isotype: Rat IgG2a kappa
Buffer and Stabilizer: 10 mM NaH2PO4, 150 mM NaCl, 0.09% NaN3, 0.1% gelatin, pH7.2
Antibody Concentration: 0.2 mg/mL
Storage Conditions: 2-8C protected from light. Stable for 12 Months. Do Not Freeze.

CD45R / B220 Previously Observed Antibody Staining Patterns

Observed Antibody Staining Data By Tissue Type:

Variations in CD45R / B220 antibody staining intensity in immunohistochemistry on tissue sections are present across different anatomical locations. An intense signal was observed in lymphoid tissue in appendix, hematopoietic cells in the bone marrow, germinal center cells in the lymph node, non-germinal center cells in the lymph node, cells in the red pulp in spleen, cells in the white pulp in spleen, germinal center cells in the tonsil and non-germinal center cells in the tonsil. More moderate antibody staining intensity was present in lymphoid tissue in appendix, hematopoietic cells in the bone marrow, germinal center cells in the lymph node, non-germinal center cells in the lymph node, cells in the red pulp in spleen, cells in the white pulp in spleen, germinal center cells in the tonsil and non-germinal center cells in the tonsil. Low, but measureable presence of CD45R / B220 could be seen in. We were unable to detect CD45R / B220 in other tissues. Disease states, inflammation, and other physiological changes can have a substantial impact on antibody staining patterns. These measurements were all taken in tissues deemed normal or from patients without known disease.

Observed Antibody Staining Data By Tissue Disease Status:

Tissues from cancer patients, for instance, have their own distinct pattern of CD45R / B220 expression as measured by anti-CD45R / B220 antibody immunohistochemical staining. The average level of expression by tumor is summarized in the table below. The variability row represents patient to patient variability in IHC staining.

Sample Type breast cancer carcinoid cervical cancer colorectal cancer endometrial cancer glioma head and neck cancer liver cancer lung cancer lymphoma melanoma ovarian cancer pancreatic cancer prostate cancer renal cancer skin cancer stomach cancer testicular cancer thyroid cancer urothelial cancer
Signal Intensity - - - - - - - - - +++ - - - - - - - - - -
PTPRC Variability + + + + + + + + + + + + + + + + + + + +

Selected References

Willinger T and Flavell RA. 2012. Proc. Natl. Acad. Sci. 109:8670-8675. (Flow cytometry)Meredith MM, Liu K, Darrasse-Jeze G, Kamphorst AO, Schreiber HA, Guermonprez P, Idoyaga J, Cheong C, Yao K-H, Niec RE, and Nussenzweig MC. 2012. J. Exp. Med. 209: 1153-1165. (Immunofluorescence microscopy: acetone-fixed frozen tissue)Becker-Herman A, Meyer-Bahlburg A, Schwartz MA, Jackson SW, Hudkins KL, Liu C, Sather BD, Khim S, Liggitt D, Song W, Silverman GJ, Alpers CE and Rawlings DJ. 2011. J. Exp. Med. 208:2033-2042. (Immunofluorescence microscopy - OCT embedded frozen tissue)Bertossi A, Aichinger M, Sansonetti P, Lech , Neff F, Pal M, Wunderlich FT, Anders H, Klein L, and Schmidt-Supprian M. 2011. J. Exp. Med. 208:1749-1756. (Immunofluorescence microscopy)De Clercq S, Gembarska A, Denecker G, Maetens M, Naessens M, Haigh K, Haigh JJ, and Marine J-C. 2010. Mol. Cell. Biol. 30:5394-5405. (Western Blot)Nutt SL, Metcalf D, D’Amico A, Polli M, and Wu L. 2005. J. Exp. Med. 201:221-231. (Immunomagnetic bead depletion)Cappione AJ, Pugh-Bernard AE, Anolik JH, and Sanz I. 2004. J. Immunol. 172: 4298-4307. (Immunoprecipitation)Monteith CE, Chelack BJ, Davis WC, and Haines DM. 1996. Can. J. Vet. Res. 60(3): 193-198. (Immunohistochemistry - feline tissue)Whiteland JL, Nicholls SM, Shimeld C, Easty DL, Williams NA, and Hill TJ. 1995. J. Histochem. Cytochem. 43:313-320. (Immunohistochemistry - frozen tissue, paraffin embedded tissue)Domiati-Saad R, Ogle EW, and Justement LB. 1993. J. Immunol. 151: 5936-5947. (in vivo blocking)

Limitations and Warranty

enQuire Bio's Anti-Human/Mouse CD45R / B220 Monoclonal is available for Research Use Only. This antibody is guaranteed to work for a period of two years when properly stored.

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