CD45RA Antibody (111-1C5) [Janelia Fluor® 646]

• Reactivity: Hu
• Applications: WB, Flow, ICC/IF, IHC
• Clone: 111-1C5
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Janelia Fluor 646

CD45RA Antibody (111-1C5) [Janelia Fluor® 646] Summary

• Immunogen: Stimulated human leukocytes
• Localization: Cell Surface
• Marker: Leucocyte Marker
• Specificity: Recognizes a protein of 205kDa-220kDa, identified as CD45RA which is an isoform of the human leukocyte common antigen (CD45). Human CD45 contains three exons which encode peptide segments designated A, B and C, respectively. The differential splicing of the exons generates at least five isoforms, ABC, AB, BC, B and O. This antibody reacts with ABC and BC isoforms. CD45RA is expressed on 40-50% of peripheral CD4+ T-cells, 50% of peripheral CD8+ T-cells, B-cells, and leukemic B-cell lines. T-cells expressing CD45RA are naive or virgin T-cells. T-cells expressing CD45RO are memory T-cells. CD45RA and CD45RO define complementary, predominantly non-overlapping populations of resting peripheral T-cells. This monoclonal antibody is useful in study on the subpopulation of CD4+ or CD8+ T-cells. It can especially be used to differentiate T-cell lymphomas (CD45RO +ve) from B cell lymphomas (CD45RA +ve).
• Isotype: IgG1 Kappa
• Clonality: Monoclonal
• Host: Mouse
• Gene: PTPRC
• Purity: Protein A or G purified

Applications/Dilutions

• Dilutions:
  • Flow Cytometry
  • Immunocytochemistry/ Immunofluorescence
  • Immunohistochemistry
  • Immunohistochemistry-Paraffin
  • Western Blot
• Application Notes: Optimal dilution of this antibody should be experimentally determined.

Packaging, Storage & Formulations

• Storage: Store at 4C in the dark.
• Buffer: 50mM Sodium Borate
• Preservative: 0.05% Sodium Azide
• Purity: Protein A or G purified

Notes

Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus.

Alternate Names for CD45RA Antibody (111-1C5) [Janelia Fluor® 646]

• 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

Background

The CD45 molecule is comprised of different glycoproteins ranging from 180-240 kD. Expression of CD45 is found on all hemopoietic cells. Detection of the different isoforms can distinguish between different cell forms i.e. naive T cells and memory T cells. CD45RA is an isoform of the CD45 complex and has restricted expression between different subtypes of lymphoid cells. The functional activity of each CD45 isotype also varies.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: PTPRC