PE anti-human CD49a Antibody

Pricing & Availability
TS2/7 (See other available formats)
Regulatory Status
Other Names
α1 integrin, VLA-1 α chain, Integrin α1 chain, ITGA1
Mouse IgG1, κ
Ave. Rating
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Product Citations
Human cervical cancer cell line, Hela, stained with TS2/7 PE
  • 1_TS2slash7_PE_082808.jpg
    Human cervical cancer cell line, Hela, stained with TS2/7 PE
  • 2_18_Human_Liver_CD163_CD49a
    Confocal image of human liver sample acquired using the IBEX method of highly multiplexed antibody-based imaging: CD163 (yellow) in Cycle 2 and CD49a (blue) in Cycle 4. Tissues were prepared using ~1% (vol/vol) formaldehyde and a detergent. Following fixation, samples are immersed in 30% (wt/vol) sucrose for cryoprotection. Images are courtesy of Drs. Andrea J. Radtke and Ronald N. Germain of the Center for Advanced Tissue Imaging (CAT-I) in the National Institute of Allergy and Infectious Diseases (NIAID, NIH).
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328303 25 tests 105 CHF
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328304 100 tests 230 CHF
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CD49a is a 200 kD type I transmembrane glycoprotein also known as α1 integrin, VLA-1 α chain, or Integrin α1. It associates with CD29 (β1 integrin) to form VLA-1 complex, a collagen IV and alminin-1 receptor. It is expressed on activated T cells, monocytes, NK cells, smooth muscle cells, neuronal cells, fibroblasts, and mesenchymal cells. CD49a is an adhesion molecule and is involved in the regulation of leukocyte migration, T cell proliferation, and cytokine production.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Reported Reactivity
African Green, Baboon, Cynomolgus, Rhesus
Antibody Type
Host Species
Human CTL line
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
The antibody was purified by affinity chromatography, and conjugated with PE under optimal conditions.
Lot-specific (to obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.)
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.

FC - Quality tested
SB - Reported in the literature, not verified in house

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.

Excitation Laser
Blue Laser (488 nm)
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
Application Notes

Additional reported applications include: immunoprecipitation1, immunohistochemical staining1 of acetone-fixed frozen tissue sections, and spatial biology (IBEX)3,4.

Additional Product Notes

Iterative Bleaching Extended multi-pleXity (IBEX) is a fluorescent imaging technique capable of highly-multiplexed spatial analysis. The method relies on cyclical bleaching of panels of fluorescent antibodies in order to image and analyze many markers over multiple cycles of staining, imaging, and, bleaching. It is a community-developed open-access method developed by the Center for Advanced Tissue Imaging (CAT-I) in the National Institute of Allergy and Infectious Diseases (NIAID, NIH).

Application References

(PubMed link indicates BioLegend citation)
  1. Hemler ME, et al. 1984. J.Immunol. 132:3011
  2. Hemler ME, et al. 1985. J. Biol. Chem. 260:15246
  3. Radtke AJ, et al. 2020. Proc Natl Acad Sci USA. 117:33455-33465. (SB) PubMed
  4. Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
Product Citations
  1. Corleis B, et al. 2019. Cell Rep. 26:1409. PubMed
  2. Martrus G, et al. 2017. PLoS One.. 10.1371/journal.pone.0182532. PubMed
  3. Zhang Z, Shively J 2013. PLoS One. 8:67649. PubMed
  4. Qualai J, et al. 2016. PLoS One. 11: 0156605. PubMed
  5. Sandoval F, et al. 2013. Sci Transl Med. 13:172. PubMed
  6. Mastrogiovanni M, et al. 2022. Sci Adv. 8:eabl5942. PubMed
  7. Marquardt N, et al. 2015. J Immunol. 194:2467. PubMed
  8. Kawamoto E, et al. 2021. Biomedicines. 9:. PubMed
AB_1236441 (BioLegend Cat. No. 328303)
AB_1236407 (BioLegend Cat. No. 328304)

Antigen Details

Integrin alpha chain family, Type I membrane protein, alpha chain of heterodimeric integrin receptor, 200 kD. Associates with CD29 to form VLA-1 complex

Activated T cells, monocytes, NK cells, smooth muscle cells, neuronal cells, fibroblasts, and mesenchymal cells

Adhesion, leukocyte migration
With integrin β1 (CD29) forms receptor for laminin-1 and collagen IV
Cell Type
Fibroblasts, Mesenchymal cells, Mesenchymal Stem Cells, Monocytes, NK cells, T cells
Biology Area
Immunology, Stem Cells
Molecular Family
Adhesion Molecules, CD Molecules
Antigen References
  1. Zola H, et al. Eds. 2007. Leukocyte and Stromal Cell Molecules:The CD Markers. Wiley-Liss Press. p122
  2. Boiret N, et al. 2005. Exp. Hematol. 33:219
Gene ID
3672 View all products for this Gene ID
View information about CD49a on

Related FAQs

What type of PE do you use in your conjugates?
We use R-PE in our conjugates.
If an antibody clone has been previously successfully used in IBEX in one fluorescent format, will other antibody formats work as well?

It’s likely that other fluorophore conjugates to the same antibody clone will also be compatible with IBEX using the same sample fixation procedure. Ultimately a directly conjugated antibody’s utility in fluorescent imaging and IBEX may be specific to the sample and microscope being used in the experiment. Some antibody clone conjugates may perform better than others due to performance differences in non-specific binding, fluorophore brightness, and other biochemical properties unique to that conjugate.

Will antibodies my lab is already using for fluorescent or chromogenic IHC work in IBEX?

Fundamentally, IBEX as a technique that works much in the same way as single antibody panels or single marker IF/IHC. If you’re already successfully using an antibody clone on a sample of interest, it is likely that clone will have utility in IBEX. It is expected some optimization and testing of different antibody fluorophore conjugates will be required to find a suitable format; however, legacy microscopy techniques like chromogenic IHC on fixed or frozen tissue is an excellent place to start looking for useful antibodies.

Are other fluorophores compatible with IBEX?

Over 18 fluorescent formats have been screened for use in IBEX, however, it is likely that other fluorophores are able to be rapidly bleached in IBEX. If a fluorophore format is already suitable for your imaging platform it can be tested for compatibility in IBEX.

The same antibody works in one tissue type but not another. What is happening?

Differences in tissue properties may impact both the ability of an antibody to bind its target specifically and impact the ability of a specific fluorophore conjugate to overcome the background fluorescent signal in a given tissue. Secondary stains, as well as testing multiple fluorescent conjugates of the same clone, may help to troubleshoot challenging targets or tissues. Using a reference control tissue may also give confidence in the specificity of your staining.

How can I be sure the staining I’m seeing in my tissue is real?

In general, best practices for validating an antibody in traditional chromogenic or fluorescent IHC are applicable to IBEX. Please reference the Nature Methods review on antibody based multiplexed imaging for resources on validating antibodies for IBEX.

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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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