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Pack Size:100μg/vial
Validated Species:Human
Application:IHC, ICC, WB
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Product Name Anti-CD45 Antibody
SKU/Catalog Number PA1596
Description Rabbit IgG polyclonal antibody for Receptor-type tyrosine-protein phosphatase C(PTPRC) detection. Tested with WB, IHC-P, ICC in Human.
Cite This Product Anti-CD45 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1596)
Replacement Item This antibody may replace the following items: sc-1123|sc-1178|sc-1183|sc-1187|sc-12951-R|sc-18901|sc-19664|sc-19665|sc-20056|sc-20057|sc-25590|sc-28369|sc-51555|sc-52386|sc-52490|sc-53201|sc-53203|sc-59070|sc-59071|sc-65344|sc-66202|sc-70699|sc-70704|sc-70712 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human
Application IHC, ICC, WB

*Our Boster Guarantee covers the use of this product in the above tested applications.

**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.

Recommended Detection Systems Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot, and HRP Conjugated anti-Rabbit IgG Super Vision Assay Kit (SV0002-1) for IHC(P) and ICC.
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2017!
Immunogen A synthetic peptide corresponding to a sequence at the C-terminus of human CD45(1209-1227aa MVSTFEQYQFLYDVIASTY).
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial


Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
*carrier free antibody available upon request.
Concentration Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Storage At -20°C for one year. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for a longer time.Avoid repeated freezing and thawing.
Purification Immunogen affinity purified.
Isotype N/A

Protein Target Info (Source:

You can check the tissue specificity below for information on selecting positive and negative control.

Gene Name PTPRC
Protein Name Receptor-type tyrosine-protein phosphatase C
Molecular Weight 147254 MW
Protein Function Protein tyrosine-protein phosphatase required for T-cell activation through the antigen receptor. Acts as a positive regulator of T-cell coactivation upon binding to DPP4. The first PTPase domain has enzymatic activity, while the second one seems to affect the substrate specificity of the first one. Upon T-cell activation, recruits and dephosphorylates SKAP1 and FYN. Dephosphorylates LYN, and thereby modulates LYN activity (By similarity). .
Sequence Similarities Belongs to the protein-tyrosine phosphatase family. Receptor class 1/6 subfamily.
Subcellular Localization Membrane ; Single-pass type I membrane protein . Membrane raft . Colocalized with DPP4 in membrane rafts.
Uniprot ID P08575
Alternative Names Receptor-type tyrosine-protein phosphatase C;;Leukocyte common antigen;L-CA;T200;CD45;PTPRC;CD45;
Research Areas |signal transduction|protein phosphorylation|tyrosine phosphatases| signal transduction|adapters|transmembrane|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for Receptor-type tyrosine-protein phosphatase C

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.

Anti-CD45 Antibody Images

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Anti-CD45 Antibody
Anti-CD45 antibody, PA1596, Western blotting
All lanes: Anti CD45 (PA1596) at 0.5ug/ml
Lane 1: JURKAT Whole Cell Lysate at 40ug
Lane 2: CEM Whole Cell Lysate at 40ug
Predicted bind size: 147KD
Observed bind size: 147KD
Anti-CD45 Antibody
Anti-CD45 antibody, PA1596, IHC(P)
IHC(P): Human Tonsil Tissue
Anti-CD45 Antibody
Anti-CD45 antibody, PA1596, ICC
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Huang Y, Jia X, Bai K, Gong X, Fan Y. Arch Med Res. 2010 Oct;41(7):497-505. Doi: 10.1016/J.Arcmed.2010.10.002. Effect Of Fluid Shear Stress On Cardiomyogenic Differentiation Of Rat Bone Marrow Mesenchymal Stem Cells.
Liu D, Wang Y, Ye Y, Yin G, Chen L. Cell Immunol. 2014 May-Jun;289(1-2):7-14. Doi: 10.1016/J.Cellimm.2014.01.007. Epub 2014 Feb 2. Distinct Molecular Basis For Endothelial Differentiation: Gene Expression Profiles Of Human Mesenchymal Stem Cells V...
Li X, Huang Y, Zheng L, Liu H, Niu X, Huang J, Zhao F, Fan Y. J Biomed Mater Res A. 2014 Apr;102(4):1092-101. Doi: 10.1002/Jbm.A.34774. Epub 2013 Jun 11. Effect Of Substrate Stiffness On The Functions Of Rat Bone Marrow And Adipose Tissue Derived ...

Customer Q&As

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at for more information about BSA-free antibodies and availability. The new BSA-free formula uses trehalose as a replacement to BSA. We have tested many alternative chemicals and found that trehalose protects the antibodies the best.
Q: Is your western blot protocol provided from the website applicable for all your antibodies? Keyword: applications, WB
A: The protocol is applicable for all our antibodies in WB, the NC Membrane(0.45μm or 0.22μm) and transfer time(70 mins or 50 mins) depends on the protein molecular weight, details can be found in included protocol.
Q: Can I conjugate markers to this antibody? Can I link custom conjugates to this antibody? Keyword: conjugation
A: The antibody is stored with BSA and cannot be conjugated with markers. Carrier free antibodies are available upon request. Please contact
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the immunogen sequence of this antibody? Is this antibody polyclonal or monoclonal?
A: You can find the immunogen sequence under "Immunogen" and clonality in the product name.
Q: What is the expected band size? Why is it different than the observed band size?
A: The expected band size is predicted on the size of the protein. The actual band size may be affected by a few other factors including but not limited to:
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands

3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.

4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,
Q: What is the suggested dilution ratio for Western Blot (WB), Immunohistochemistry (IHC) and or ELISA standards? What is the optimal pH for the sample?
A: Check the datasheet for the product for details on dilution ratios for different experiments. You can find the datasheet button on the right side of the product page.
Q: What is the protocol you used for your Western blotting (WB) and Immunohistochemistry (IHC)?
A: Check our protocols under the tech support tab.
Q: What are some alternative names that could be used to describe this product?
A: Some common names include but are not limited to cd45 antibody, b220 antibody, cd 45 antibody, cd45r antibody, lca antibody