CD45 Antibody

• Description:

  CD45 (Cluster of Differentiation 45), also known as PTPRC, LCA or CD45R, is an enzyme that, in humans, is encoded by the PTPRC gene. CD45 is a member of the protein tyrosine phosphatase (PTP) family. CD45 is a major high molecular mass leukocyte cell surface molecule which is also an integral membrane protein tyrosine phosphatase. The cytogenetic location of CD45 is 1q31.3-q32.1. CD45 is especially a prototype for transmembrane protein-tyrosine phosphatase (PTP) . Targeted disruption of the CD45 gene leads to enhanced cytokine and interferon receptor-mediated activation of JAKs and STAT proteins. In vitro, CD45 directly dephosphorylates and binds to JAKs. Functionally, CD45 negatively regulates interleukin-3-mediated cellular proliferation, erythropoietin-dependent hematopoiesis, and antiviral responses in vitro and in vivo. CD45 has been best studied in T cells, where it determines T cell receptor signaling thresholds. 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. Galectin interaction can be finetuned by varying usage of the heavily Oglycosylated spliced regions and sialylation of Nlinked carbohydrates.

• Specifications:

  Western blot: 1-2 µg/mL, Immunofluorescence: 5 µg/mL, Flow cytometry: 1-3ug/million cells, Direct ELISA: 0.1-0.5 µg/mL

• UniProt:

  P08575

• Host:

  Rabbit

• Reactivity:

  Human

• Immunogen:

  An E. coli-derived human protein (amino acids Q1052-E1279) was used as the immunogen for the CD45 antibody.

• Clonality:

  Polyclonal

• Isotype:

  IgG

• Applications:

  WB, IF, FACS, Direct ELISA

• Purity:

  Affinity purified

• Format:

  Antigen affinity purified

• Buffer:

  Lyophilized from 1X PBS with 2% Trehalose

• Reconstitution:

  After reconstitution, the CD45 antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.

• Limitations:

  This CD45 antibody is available for research use only.

• Storage Conditions:

  After reconstitution, the CD45 antibody can be stored for up to one month at 4°C. For long-term, aliquot and store at -20°C. Avoid repeated freezing and thawing.

• Formulation:

  0.5 mg/mL if reconstituted with 0.2ml sterile DI water

• Applications Notes:

  Optimal dilution of the CD45 antibody should be determined by the researcher.

• CAS Number:

  9007-83-4

• Location:

  Cell surface and cytoplasmic

• Image Legend:

  Immunofluorescent staining of FFPE human tonsil tissue with CD45 antibody (green) and DAPI nuclear stain (blue) . HIER: steam section in pH6 citrate buffer for 20 min.