Render Target: STATIC
Render Timestamp: 2024-12-20T11:58:07.943Z
Commit: f2d32940205a64f990b886d724ccee2c9935daff
XML generation date: 2024-10-31 19:07:10.419
Product last modified at: 2024-12-17T20:15:08.821Z
Cell Signaling Technology Logo
View Featured Offers >>
1% for the planet logo
PDP - Template Name: Monoclonal Antibody
PDP - Template ID: *******c5e4b77
  1. Products /
  2. Primary Antibodies /
  3. Human CD28 Activating (CD28.2) Mouse mAb (Low Endotoxin, Azide-free)

Human CD28 Activating (CD28.2) Mouse mAb (Low Endotoxin, Azide-free) #91920

    Supporting Data

    REACTIVITY H
    SENSITIVITY Endogenous
    MW (kDa)
    Source/Isotype Mouse IgG1 kappa
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Description

    Endotoxin Less than or equal to 0.01 EU/μg, as determined by the LaL assay.

    Formulation

    Supplied in 10 mM NaH2PO4, 150 mM NaCl, pH7.2, Low Endotoxin, Azide-free.

    Storage

    Stable for 12 months when stored at 4°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    Human CD28 Activating (CD28.2) Mouse mAb (Low Endotoxin, Azide-free) recognizes endogenous levels of CD28 protein.

    Species Reactivity:

    Human

    Source / Purification

    Monoclonal antibody is produced using cells transfected with human CD28 and purified via affinity chromatography.

    Background

    CD28 is a transmembrane glycoprotein expressed by T cells as well as some other hematopoietic cells (1, 2). T cell activation requires T cell receptor (TCR) recognition of antigen presented in the context of MHC molecules. CD28 acts as a T cell costimulatory receptor, and interaction of CD28 with its ligands CD80 or CD86 provides the second signal required for naïve T cell activation (3-5). Activation of naïve T cells in the absence of CD28 stimulation can result in a state of T cell anergy, or unresponsiveness (3). CD28 signals through cytoplasmic phospho-tyrosine motifs that bind several SH2 or SH3 domain-containing proteins involved in T cell activation (2). Recently, CD28 was demonstrated to be a preferred target of PD-1-mediated dephosphorylation. Consistently, CD28 expression was required for T cell proliferation following PD-1 blockade and CD28 stimulation was required for effective anti-PD-1 cancer immunotherapy in mice (6, 7). Several CD28 isoforms are produced by alternative splicing (8).

    Database Links

    UniProt ID: P10747


    Entrez-Gene Id: 940


    Limited Uses

    Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

    Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

    For Research Use Only. Not For Use In Diagnostic Procedures.
    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    Alexa Fluor is a registered trademark of Life Technologies Corporation.
    All other trademarks are the property of their respective owners. Visit our Trademark Information page.