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Spark YG™ 581 anti-human CD45 (Flexi-Fluor™) Antibody

Pricing & Availability
Clone
HI30 (See other available formats)
Regulatory Status
RUO
Workshop
IV N816
Other Names
LCA, T200
Isotype
Mouse IgG1, κ
Ave. Rating
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Product Citations
publications
Compare all formats See Spark YG™ 581 spectral data
Cat # Size Price Quantity Save
285397 50 µg 316€
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Description

CD45 is a 180-240 kD single chain type I membrane glycoprotein also known as leukocyte common antigen (LCA) and T200. It is a tyrosine phosphatase expressed on the plasma membrane of all hematopoietic cells, except erythrocytes and platelets. CD45 is a signaling molecule that regulates a variety of cellular processes including cell growth, differentiation, cell cycle, and oncogenic transformation. CD45 plays a critical role in T and B cell antigen receptor-mediated activation by dephosphorylating substrates including p56Lck, p59Fyn, and other Src family kinases. CD45 non-covalently associates with lymphocyte phosphatase-associated phosphoprotein (LPAP) on T and B lymphocytes. CD45 has been reported to bind galectin-1 and to be associated with several other cell surface antigens including CD1, CD2, CD3, and CD4.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Human
Reported Reactivity
Chimpanzee
Antibody Type
Monoclonal
Host Species
Mouse
Formulation
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide
Preparation
The antibody was purified by affinity chromatography and conjugated with Spark YG™ 581 under optimal conditions.
Concentration
0.2 mg/mL
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
Application

FC
Recommended Usage

Flexi-Fluors™ are provided at a standard 0.2 mg/mL concentration. We recommend titrating this reagent to determine the optimal concentration for each application. For many flow cytometry applications, conjugated antibodies perform well at concentrations ranging from 0.03 to 1.0 µg per million cells in 100 µL. We recommend testing a range of concentrations starting from 10 µg/mL.

For example, make five 1:1 serial dilutions of the 0.2 mg/mL antibody. Add 5 µL of each dilution (including the undiluted antibody) to 100 µL of cells (at 107 cells/mL) to test six concentrations -- 1.0, 0.5, 0.25, 0.125, 0.06, and 0.03 µg per million cells in 100 µL volume. Compare staining patterns or create a titration curve using the MFI or staining index to determine the optimal concentration.

* Spark YG™ 581 has a maximum excitation of 562 nm and a maximum emission of 581 nm.

Excitation Laser
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
Application Notes

Additional reported applications (for the relevant formats) include: immunohistochemical staining of acetone-fixed frozen tissue sections and formalin-fixed paraffin-embedded tissue sections9, inhibition of CD45 functions4, immunofluorescence11, Western blotting3, and spatial biology (IBEX)16,17.

It was found that the HI30 clone and the 2D1 clone can cross block each other's binding.

Additional Product Notes

For more information about Flexi-Fluors™, visit our Flexi-Fluor™ page and review FAQs associated with this product line.

Application References
  1. Knapp W, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York.
  2. Kishihara K, et al. 1993. Cell 74:143.
  3. Esser M, et al. 2001. J. Virol. 75:6173. (WB)
  4. Yamada T, et al. 2002. J. Biol. Chem. 277:28830.
  5. Nagano M, et al. 2007. Blood 110:151.
  6. Jiang Q, et al. 2008. Blood 112:2858. PubMed
  7. Morozov A, et al. 2010. Clin Cancer Res. 16:5630. PubMed
  8. Yoshino N, et al. 2000. Exp. Anim. (Tokyo) 49:97. (FC)
  9. Friedman T, et al. 1999. J. Immunol. 162:5256. (IHC)
  10. Oeztuerk-Winder F, et al. 2012. EMBO J. 31:3431. (FC) PubMed
  11. Rees LE, et al. 2003. Clin. Exp. Immunol. 134:497. (IF)
  12. Lee J, et al. 2015. J Exp Med. 212:385. PubMed
  13. Breton G, et al. 2015. J Exp Med. 212:401. PubMed
  14. Marquardt N, et al. 2015. J Immunol. 6:2467. PubMed
  15. Bushway ME, et al. 2014. Biol Reprod. 90(5): 110. (IF) PubMed
  16. Radtke AJ, et al. 2020. Proc Natl Acad Sci USA. 117:33455-33465. (SB) PubMed
  17. Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed

Antigen Details

Structure
Tyrosine phosphatases, type I transmembrane protein, 180-240 kD (multiple isoforms)
Distribution

Hematopoietic cells, not expressed in circulating erythrocytes or platelets

Function
TCR and BCR mediated activation
Ligand/Receptor
Galectin-1, CD2, CD3, CD4
Cell Type
Hematopoietic stem and progenitors, Mesenchymal Stem Cells
Biology Area
Cell Biology, Immunology, Inhibitory Molecules, Innate Immunity, Neuroscience, Neuroscience Cell Markers, Stem Cells
Molecular Family
CD Molecules
Antigen References
  1. Thomas M. 1989. Annu. Rev. Immunol. 7:339.
  2. Trowbridge I, et al. 1994. Annu. Rev. Immunol.12:85.
Gene ID
NA
UniProt
View information about CD45 on UniProt.org

Related FAQs

What are Flexi-Fluors?

Flexi-Fluors are rapidly made-to-order conjugated antibodies. The technology, manufacturing processes, and specifications used to create Flexi-Fluors are the same as our regular catalog products. However, the optimal concentration and performance of each Flexi-Fluor must be determined by the customer. 

How quickly will I receive my order?

We aim to ship Flexi-Fluors within 2-3 weeks of receipt of your order. However, depending on your location, shipping times may vary. 

How are Flexi-Fluors different from regular catalog products?

Flexi-Fluors are made on demand, specifically for you. Flexi-Fluors are manufactured using the same high-quality standards, and specifications as other catalog products. For faster delivery, Flexi-Fluors are not tested by flow cytometry to determine optimal concentrations or evaluate performance. This testing needs to be performed by the customer.

How do I determine the optimal concentration for using my Flexi-Fluor? How should I titrate my antibody?

Flexi-Fluors are provided at a standard 0.2 mg/mL concentration. We recommend that you titrate your antibody to determine the optimal concentration to use for your application. For many flow cytometry applications, conjugated antibodies perform well at concentrations ranging from 0.03 to 1.0 µg per million cells in 100 µL volume. We recommend that you test a range of concentrations starting from 10 µg/mL. 

 

For example, make five 1:1 serial dilutions of your 0.2 mg/mL antibody.  Add 5 µL of each dilution (including the undiluted antibody) to 100 µL of cells (at 107 cells/ml) to test six concentrations - 1.0, 0.5, 0.25, 0.125, 0.06, and 0.03 µg per million cells in 100 µL volume. Compare staining patterns or create a titration curve using the MFI or staining index to determine the optimal concentration. 

I can’t find the antibody-dye combination that I need. When will it be available?

We continuously update our catalog, introducing scores of new products every month. Please get in touch with our Technical Service team for an update on new products or recommendations for suitable alternatives to complete your panel. Or contact Custom Solutions to inquire about our affordable custom conjugation services. 

I need help to validate the performance of my Flexi-Fluor. Who should I contact?

Please get in touch with Technical Service for assistance. 

Can I order more than 50 μg of a Flexi-Fluor?

Yes, you can order multiple vials of the same Flexi-Fluor products.  We cannot guarantee, however, that these vials will be bottled from the same lot. For bulk single-lot orders, contact our Custom Solutions team.

What is the expiration date of my Flexi-Fluor?

Expiration dates can be found on the vial label or by using our CoA lookup tool. 

Other Formats

View All CD45 Reagents Request Custom Conjugation
Description Clone Applications
APC anti-human CD45 HI30 FC
Biotin anti-human CD45 HI30 FC
FITC anti-human CD45 HI30 FC
PE anti-human CD45 HI30 FC
PE/Cyanine5 anti-human CD45 HI30 FC
Purified anti-human CD45 HI30 FC,CyTOF®,IHC-P,WB,IHC-F,ICC
APC/Cyanine7 anti-human CD45 HI30 FC
PE/Cyanine7 anti-human CD45 HI30 FC
Alexa Fluor® 488 anti-human CD45 HI30 FC
Alexa Fluor® 647 anti-human CD45 HI30 FC
Pacific Blue™ anti-human CD45 HI30 FC
Alexa Fluor® 700 anti-human CD45 HI30 FC
PerCP anti-human CD45 HI30 FC
PerCP/Cyanine5.5 anti-human CD45 HI30 FC,SB
Brilliant Violet 421™ anti-human CD45 HI30 FC
Brilliant Violet 570™ anti-human CD45 HI30 FC
Brilliant Violet 510™ anti-human CD45 HI30 FC
Brilliant Violet 605™ anti-human CD45 HI30 FC
Brilliant Violet 650™ anti-human CD45 HI30 FC
Purified anti-human CD45 (Maxpar® Ready) HI30 FC,CyTOF®
Brilliant Violet 785™ anti-human CD45 HI30 FC
Brilliant Violet 711™ anti-human CD45 HI30 FC
PE/Dazzle™ 594 anti-human CD45 HI30 FC
Alexa Fluor® 594 anti-human CD45 HI30 IHC-P,SB
APC/Fire™ 750 anti-human CD45 HI30 FC
Pacific Blue™ anti-human CD45 HI30 FC
APC anti-human CD45 HI30 FC
PE/Cyanine7 anti-human CD45 HI30 FC
PE/Dazzle™ 594 anti-human CD45 HI30 FC
TotalSeq™-A0391 anti-human CD45 HI30 PG
TotalSeq™-B0391 anti-human CD45 HI30 PG
TotalSeq™-C0391 anti-human CD45 HI30 PG
PerCP/Cyanine5.5 anti-human CD45 HI30 FC
APC/Fire™ 750 anti-human CD45 HI30 FC
PE/Fire™ 640 anti-human CD45 HI30 FC
APC/Fire™ 810 anti-human CD45 HI30 FC
Spark YG™ 570 anti-human CD45 HI30 IHC-P
PE/Fire™ 700 anti-human CD45 HI30 FC
FITC anti-human CD45 HI30 FC
PerCP anti-human CD45 HI30 FC
Alexa Fluor® 660 anti-human CD45 Antibody HI30 FC
Spark Violet™ 538 anti-human CD45 HI30 FC
Spark YG™ 593 anti-human CD45 HI30 FC
GMP APC/Fire™ 750 anti-human CD45 HI30 FC
Spark Violet™ 538 anti-human CD45 HI30 FC
GMP APC anti-human CD45 HI30 FC
Spark UV™ 387 anti-human CD45 HI30 FC
GMP Pacific Blue™ anti-human CD45 HI30 FC
GMP PerCP anti-human CD45 HI30 FC
GMP FITC anti-human CD45 HI30 FC
PE anti-human CD45 HI30 FC
GMP PE/Dazzle™ 594 anti-human CD45 HI30 FC
GMP PerCP/Cyanine5.5 anti-human CD45 HI30 FC
Spark Blue™ 515 anti-human CD45 HI30 FC
TotalSeq™-D0391 anti-human CD45 HI30 PG
GMP PE/Cyanine7 anti-human CD45 HI30 FC
Spark Violet™ 500 anti-human CD45 HI30 FC
GMP PE anti-human CD45 HI30 FC
PE/Fire™ 810 anti-human CD45 HI30 FC
Spark PLUS UV395™ anti-human CD45 HI30 FC
Spark NIR™ 685 anti-human CD45 HI30 FC
Spark Violet™ 423 anti-human CD45 HI30 FC
GMP Spark Violet™ 538 anti-human CD45 HI30 FC
PE/Cyanine5 anti-human CD45 HI30 FC
Spark YG™ 581 anti-human CD45 (Flexi-Fluor™) HI30 FC
Go To Top Version: 1    Revision Date: 05/21/2025

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

BioLegend, the BioLegend logo, and all other trademarks are property of BioLegend, Inc. or their respective owners, and all rights are reserved.

 

8999 BioLegend Way, San Diego, CA 92121 www.biolegend.com
Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

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