Biolegend, 103164, Ultra-LEAF™ Purified anti-mouse CD45 Antibody, 1mg

CD45 is a 180-240 kD glycoprotein also known as the leukocyte common antigen (LCA), T200, or Ly-5. It is a member of the protein tyrosine phosphatase (PTP) family, expressed on all hematopoietic cells except mature erythrocytes and platelets. There are different isoforms of CD45 that arise from variable splicing of exons 4, 5, and 6, which encode A, B, and C determinants, respectively. CD45 plays a key role in TCR and BCR signal transduction. These isoforms are very specific to the activation and maturation state of the cell as well as cell type. The primary ligands for CD45 are galectin-1, CD2, CD3, CD4, TCR, CD22, and Thy-1.
1mg
Verified Reactivity: Mouse
Antibody Type: Monoclonal
Host Species: Rat
Immunogen: Mouse thymus or spleen
Formulation: 0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative.
Endotoxin Level: Less than 0.01 EU/µg of the protein (< 0.001 ng/µg of the protein) as determined by the LAL test.
Preparation: The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
Concentration: The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.
Application: FC - Quality testedCyTOF® - VerifiedIP, CMCD, IHC, WB - Reported in the literature, not verified in house
Recommended Usage: Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.25 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
Application Notes: Clone 30-F11 reacts with all isoforms and both CD45.1 and CD45.2 alloantigens of CD45. Additional reported applications (for relevant formats) include: immunoprecipitation3, complement-dependent cytotoxicity1,5, immunohistochemistry (acetone-fixed frozen sections, zinc-fixed paraffin-embedded sections and formalin-fixed paraffin-embedded sections)4,6, Western blotting7, and spatial biology (IBEX)10,11. The Ultra-LEAF™ purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 103163 and 103164).
Application References(PubMed link indicates BioLegend citation): Podd BS, et al. 2006. J. Immunol. 176:6532. (FC, CMCD) PubMed Haynes NM, et al. 2007. J. Immunol. 179:5099. (FC) Ledbetter JA, et al. 1979. Immunol. Rev. 47:63. (IP) Simon DI, et al. 2000. J. Clin. Invest. 105:293. (IHC) Seaman WE. 1983. J. Immunol. 130:1713. (CMCD) Cornet A, et al. 2001. P. Natl. Acad. Sci. USA 98:13306. (IHC) Tsuboi S and Fukuda M. 1998. J. Biol. Chem. 273:30680. (WB) PubMed Liu F, et al. 2012. Blood. 119:3295. PubMed Pelletier AN, et al. 2012. J. Immunol. 188:5561. PubMed Radtke AJ, et al. 2020. Proc Natl Acad Sci U S A. 117:33455-65. (SB) PubMed Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
Product Citations: Rajagopalan A, et al. 2021. Cell Rep Methods. 1:. PubMed Hu KH, et al. 2020. Nat Methods. 1.286805556. PubMed
RRID: AB_2819789 (BioLegend Cat. No. 103163) AB_2819790 (BioLegend Cat. No. 103164)
Structure: Protein tyrosine phosphatase (PTP) family, 180-240 kD
Distribution: All hematopoietic cells except mature erythrocytes and platelets
Function: Phosphatase, T and B cell activation
Ligand/Receptor: Galectin-1, CD2, CD3, CD4, TCR, CD22, Thy-1
Cell Type: B cells, Dendritic cells, Mesenchymal Stem Cells, Tregs
Biology Area: Cell Biology, Immunology, Inhibitory Molecules, Innate Immunity, Neuroscience, Neuroscience Cell Markers, Stem Cells
Molecular Family: CD Molecules
Antigen References: 1. Barclay A, et al. 1997. The Leukocyte Antigen FactsBook Academic Press. 2. Trowbridge IS, et al. 1993. Annu. Rev. Immunol. 12:85. 3. Kishihara K, et al. 1993. Cell 74:143. 4. Pulido R, et al. 1988. J. Immunol. 140:3851.
Gene ID: 19264
UniProt: View information about CD45 on UniProt.org
Clone: 30-F11
Regulatory Status: RUO
Other Names: T200, Ly-5, LCA
Isotype: Rat IgG2b, κ
Q: Do you guarantee that your antibodies are totally pathogen free?
A: BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.
Q: Does BioLegend test each Ultra-LEAF™ antibody by functional assay?
A: No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.
Q: Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?
A: No, BioLegend does not test for pathogens in-house unless otherwise indicated.  However, we can recommend an outside vendor to perform this testing as needed.
Q: Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?
A: We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.