Human CD45RA Antibody

Catalog # Availability Size / Price Qty
MAB11444-100
MAB11444-SP
Detection of CD45RA in Human Appendix l via Multiplex Immunofluorescence staining on COMET™
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Human CD45RA Antibody Summary

Species Reactivity
Human
Specificity
Detects CD45RA in direct ELISA.
Source
Monoclonal Mouse IgG2A Clone # 1069433
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Whole cells (naïve T cells)
Accession # P08575
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25 µg/106 cells
PBMC lymphocytes
Immunohistochemistry
5-25 µg/mL
Immersion fixed paraffin-embedded sections of Human Tonsil
Multiplex Immunofluorescence
2.5 µg/mL
Immersion fixed paraffin embedded sections of human appendix

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Multiplex Immunofluorescence View Larger

Detection of CD45RA in Human Appendix l via Multiplex Immunofluorescence staining on COMET™ CD45RA was detected in immersion fixed paraffin-embedded sections of human appendix using Mouse Anti-Human CD45RA Monoclonal Antibody (MAB11444) at 2.5µg/mL at 37 ° Celsius for 4 minutes. Before incubation with the primary antibody, tissue underwent an all-in-one dewaxing and antigen retrieval preprocessing using PreTreatment Module (PT Module) and Dewax and HIER Buffer H (pH 9). Tissue was stained using the Alexa Fluor™ 555 Goat anti-Mouse IgG Secondary Antibody at 1:100 at 37 ° Celsius for 2 minutes. (Yellow; Lunaphore Catalog # DR555MS) and counterstained with DAPI (blue; Lunaphore Catalog # DR100).Specific staining was localized to the membrane. Protocol available in COMET™ Panel Builder.

Flow Cytometry View Larger

Detection of CD45RA in PBMC lymphocytes by Flow Cytometry. PBMC lymphocytes were stained with either (A) Mouse Anti-Human CD45RA Monoclonal Antibody (Catalog # MAB11444) or (B) Mouse IgG2A Isotype Control (MAB003) followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (F0101B) and followed with Mouse Anti-Human CD45RO Alexa Fluor® 488-conjugated Monoclonal Antibody (FAB10642G). View our protocol for Staining Membrane-associated Proteins.

Immunohistochemistry View Larger

Detection of CD45RA in Human Tonsil. CD45RA was detected in immersion fixed paraffin-embedded sections of Human Tonsil using Mouse Anti-Human CD45RA Monoclonal Antibody (Catalog # MAB11444) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using VisUCyte Antigen Retrieval Reagent-Basic (Catalog # VCTS021). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cell surface in lymphocytes. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CD45RA

This monoclonal antibody specifically binds to the 220 kDa isoform of human CD45, CD45RA.  CD45RA is a single chain type I glycoprotein that is encoded by the human PTPRC gene.  In humans, CD45RA is one of six isoforms of the CD45 complex.  These different isoforms are the result of alternative splicing and some of the other isoforms include CD45RO, CD45RB, and CD45RC.  CD45RO, CD45RB, CD45RC, and CD45RA are primarily expressed on T cells.  CD45RA contains exon 4 but lacks both exons 5 and 6.  CD45RO contains exons 3, 7, and 8 but not RA, RB, and RC exons.  Phenotypically, CD45RA is highly expressed on naïve T cells whereas CD45RO is expressed on activated and memory T cells.  Other cell types such as activated monocytes and B cells can also express CD45RO.  Both CD45RA and CD45RO are used to characterize different subsets of Memory T cells.

Long Name
CD45R, A isoform
Entrez Gene IDs
5788 (Human)
Alternate Names
B220; CD45 antigen; CD45R; CD45RA; EC 3.1.3.48; L-CA; LY5; protein tyrosine phosphatase, receptor type, C; receptor-type tyrosine-protein phosphatase C; T200 glycoprotein; T200 leukocyte common antigen; T200receptor type, c polypeptide

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