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Safety Data Sheet (SDS) Alexa Fluor 647 Anti-mouse CD49d Antibody     Product Data Sheet (PDF)    
Alexa Fluor® 647 Anti-mouse CD49d Antibody
1118065 25 µg $90.00       
1118070 100 µg $190.00       
Clone: R1-2
Isotype: Rat IgG2b, κ
Reactivity: Mouse
Immunogen: AKR/Cum mouse spontaneous T lymphoma line TK1
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation: The antibody was purified by affinity chromatography, and conjugated with Alexa Fluor® 647 under optimal conditions.
Concentration: 0.5 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.

FC - Quality tested
IHC, IF - Reported in the literature

Application Notes:

The R1-2 antibody has been shown to partially block CD49d mediated interactions and, in combination with the 9C10 (MFR4.B) antibody, completely blocks VCAM-1 binding to VLA-4. Additional reported applications (for the relevant formats) include: in vitro and in vivo blocking of cell-cell adhesion and T cell costimulation1-4, immunoprecipitation1, and immunohistochemistry of frozen sections5.

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 ≤ 0.25 µg per 106 cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.

* Alexa Fluor® 647 has a maximum emission of 668 nm when it is excited at 633nm / 635nm.

Application References:

1. Holzmann B, et al. 1989. Cell 56:37. (IP, Block)
2. Ferguson TA, et al. 1993. J. Immunol. 150:1172. (Block)
3. Andrew DP, et al. 1994. J. Immunol. 153:3847. (Block)
4. Kilshaw PJ, et al. 1991. Eur. J. Immunol. 21:2591. (Block)
5. Jaspers M, et al. 1995. Differentiation 59:79. (IHC)
6. Lawson BR, et al. 2007. J. Immunol. 178:5366. (FC)

C57BL/6 mouse splenocytes stained with

C57BL/6 mouse splenocytes stained with R1-2 Alexa Fluor® 647


CD49d is a 150 kD glycoprotein, also known as α4 integrin or VLA-4 α chain. It is a member of the integrin family, expressed on T and B cells, monocytes, eosinophils, basophils, mast cells, thymocytes, NK cells, and dendritic cells. CD49d is a heterodimer expressed with either of two β chains, β1 (CD29) or β7, to form the VLA-4 (integrin α4β1) or LPAM-1 (integrin α4β7) complexes. CD49d plays a critical role in adhesion and T cell costimulation. The primary ligands for CD49d are VCAM-1, MAdCAM-1, and fibronectin.

Other Names: α4 integrin, VLA-4 α chain, integrin α4, ITGA4
Structure: Integrin family, associates with integrin β1 or β7, 150 kD
Distribution: T cells and B cells, monocytes, eosinophils, basophils, mast cells, thymocytes, NK cells, dendritic cells
Function: T cell costimulation, cell-cell and cell-matrix adhesion
Ligand Receptor: VCAM-1, MAdCAM-1, fibronectin
Antigen References:

1. Barclay AN, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Lobb RR, et al. 1994 J. Clin. Invest. 94:1722.
3. Berlin C, et al. 1993. Cell 74:185.
4. Maguire JE, et al. 1995. J. Exp. Med. 182:2079.

This product is provided under an agreement between Life Technologies Corporation and Sony Biotechnology Inc. and the manufacture, use, sale or import of this product may be subject to one or more U.S. patents, pending applications, and corresponding non-U.S. equivalents, owned by and/or licensed to Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product in research and/or development conducted by the buyer (whether the buyer is an academic or for profit entity). The buyer cannot sell or otherwise transfer (a) this product (b) its components or (c) materials made using this product or its components to a third party or otherwise use this product or its components or materials made using this product or its components for Commercial Purposes. Commercial Purposes means any activity by a party for consideration and may include, but is not limited to (1) use of the product or its components in manufacturing, (2) use of the product or its components for therapeutic, diagnostic or prophylactic purposes, or (3) resale of the product or its components, whether or not such product or its components are resold for use in research. For information on purchasing a license to this product for any other use, contact Life Technologies Corporation, Molecular Probes Detection Technologies, Attn: Business Development, 29851 Willow Creek Road, Eugene, OR 97402, USA, Tel: (541) 465-8300. Fax: (541) 335-0504.