Brilliant Violet 421™ anti-mouse CD28 Antibody, CD28, E18

Clone: E18 (See other available formats)
Regulatory Status: RUO
Other Names: Tp44, T44
Isotype: Mouse IgG2b, κ
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E18_BV-421_CD28_FC_062424 — C57BL/6 splenocytes were stained with anti-mouse CD3 (clone 145-2C11) PE and anti-mouse CD28 (clone E18) Brilliant Violet 421™ (left) or mouse IgG2b, κ Brilliant Violet 421™ isotype control (right).

Compare all formats See Brilliant Violet 421™ spectral data

Cat #	Size	Price	Save
122023	50 µg	¥52,800

Description

CD28 is a 44 kD glycoprotein, also known as Tp44 or T44. It is a member of the Ig superfamily, expressed on thymocytes, most peripheral T cells, and NK cells. In association with CD80 (B7-1) and CD86 (B7-2), CD28 acts as the second signal for T and NK cell activation and proliferation. The E18 antibody blocks the binding of 37.51 antibody to CD28 and costimulates T cell activation and proliferation.

Product Details

Technical data sheet

Product Details

Verified Reactivity: Mouse
Antibody Type: Monoclonal
Host Species: Mouse
Immunogen: A20 cells and recombinant mCD28Ig
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
Preparation: The antibody was purified by affinity chromatography and conjugated with Brilliant Violet 421™ 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 - Quality tested
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 million cells in 100 µL volume. It is recommended that the reagent be titrated for optimal performance for each application.

Brilliant Violet 421™ excites at 405 nm and emits at 421 nm. The standard bandpass filter 450/50 nm is recommended for detection. Brilliant Violet 421™ is a trademark of Sirigen Group Ltd.

Learn more about Brilliant Violet™.

This product is subject to proprietary rights of Sirigen Inc. and is made and sold under license from Sirigen Inc. The purchase of this product conveys to the buyer a non-transferable right to use the purchased product for research purposes only. This product may not be resold or incorporated in any manner into another product for resale. Any use for therapeutics or diagnostics is strictly prohibited. This product is covered by U.S. Patent(s), pending patent applications and foreign equivalents.
Excitation Laser: Violet Laser (405 nm)
Application Notes: Additional reported applications (for the relevant formats) include: in vitro costimulation of T and NK cells¹, in vitro blocking of allogeneic mixed leukocyte response and inhibition of MHC-unrestricted CTL cytotoxicity, and in vitro induction of thymocyte differentiation. The LEAF™ purified antibody (Endotoxin <0.1 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 122004).

Antigen Details

Structure: Ig superfamily, 44 kD
Distribution: Thymocytes, CD4⁺, CD8⁺ peripheral T cells, NK cells
Function: Costimulates T and NK cells
Ligand/Receptor: CD80 (B7-1), CD86 (B7-2)
Cell Type: NK cells, T cells, Thymocytes, Tregs
Biology Area: Costimulatory Molecules, Immunology
Molecular Family: CD Molecules
Antigen References: 1. Barclay AN, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Lenschow DJ, et al. 1996. Annu. Rev. Immunol. 14:233.
3. Gross JA, et al. 1992. J. Immunol. 149:380.
Gene ID: 12487 View all products for this Gene ID
UniProt: View information about CD28 on UniProt.org

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Cell Surface Flow Cytometry Staining Protocol

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Pathways

Related FAQs

What is the F/P ratio range of our BV421™ format antibody reagents?: It is lot-specific. On average it ranges between 2-4.

Other Formats

View All CD28 Reagents Request Custom Conjugation

Description	Clone	Applications
Purified anti-mouse CD28	E18	FC
FITC anti-mouse CD28	E18	FC
PE anti-mouse CD28	E18	FC
PE/Cyanine7 anti-mouse CD28	E18	FC
APC anti-mouse CD28	E18	FC
Alexa Fluor® 488 anti-mouse CD28	E18	FC
Ultra-LEAF™ Purified anti-mouse CD28	E18	FC,Block,Costim
Brilliant Violet 421™ anti-mouse CD28	E18	FC

Certificate of Analysis

Go To Top Version: 1 Revision Date: 06/24/2024

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.

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Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
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