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Recombinant Human CD28, Fc-tagged

Cat.No. : CD28-142H
Product Overview : The extracellular domain of human CD28 (aa 19-152) is fused to the N-terminus of the Fc region of human IgG1.
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Description : CD28 and CTLA-4 together with their ligands, CD80 (B7-1) and CD86 (B7-2), constitute one of the dominant costimulatory pathways that regulate T and B cell responses. CD28 and CTLA-4 are structurally homologous molecules that are members of the immunoglobulin (Ig) gene superfamily. Both CD28 and CTLA-4 are composed of a single Ig V-like extracellular domain, a transmembrane domain and an intracellular domain. CD28 and CTLA-4 are both expressed on the cell surface as disulfide-linked homodimers or as monomers. The genes encoding these two molecules are closely linked on human chromosome 2 and mouse chromosome 1. Mouse CD28 is expressed constitutively on virtually 100% of mouse T cells and on developing thymocytes. Cell surface expression of mouse CD28 is downregulated upon ligation of CD28 in the presence of PMA or PHA. In contrast, CTLA-4 is not expressed constitutively but is upregulated rapidly following T cell activation and CD28 ligation. Cell surface expression of mouse CTLA-4 peaks approx.y 48 hours after activation. Although both CTLA-4 and CD28 can bind to the same ligands, CTLA-4 binds to B7-1 and B7-2 with a 20-100 fold higher affinity than CD28. CD28/B7 interaction has been shown to prevent apoptosis of activated T cells via the upregulation of bcl-XL. CD28 ligation has also been shown to regulate Th1/Th2 differentiation.
Source : CHO Cells
Species : Human
Tag : Fc
Form : Lyophilized from 0.2μm-filtered solution in PBS.
Purity : ≥98% (SDS-PAGE)
Stability : Stable for at least 1 year after receipt when stored at -20°C. Working aliquots are stable for up to 3 months when stored at -20°C.
Storage : Short Term Storage: +4°C; Long Term Storage: -20°C. Avoid freeze/thaw cycles.
Gene Name : CD28 CD28 molecule [ Homo sapiens ]
Official Symbol : CD28
Synonyms : CD28; CD28 molecule; CD28 antigen (Tp44); T-cell-specific surface glycoprotein CD28; T cell specific surface glycoprotein; CD28 antigen; Tp44; MGC138290;
Gene ID : 940
mRNA Refseq : NM_001243077
Protein Refseq : NP_001230006
MIM : 186760
UniProt ID : P10747
Chromosome Location : 2q33
Pathway : Adaptive Immune System, organism-specific biosystem; Allograft rejection, organism-specific biosystem; Allograft rejection, conserved biosystem; Autoimmune thyroid disease, organism-specific biosystem; Autoimmune thyroid disease, conserved biosystem; CD28 co-stimulation, organism-specific biosystem; CD28 dependent PI3K/Akt signaling, organism-specific biosystem;
Function : SH3/SH2 adaptor activity; coreceptor activity; identical protein binding; protease binding; protein binding; protein homodimerization activity;

For Research Use Only. Not intended for any clinical use. No products from Creative BioMart may be resold, modified for resale or used to manufacture commercial products without prior written approval from Creative BioMart.

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Q&As (5)

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Can CD28 protein be used for personalized medicine? 01/13/2023

CD28 protein expression and function may be relevant for personalized treatment strategies in autoimmune diseases and cancer.

What are the potential clinical applications of targeting CD28 protein? 05/18/2021

Targeting CD28 protein may have therapeutic potential in treating autoimmune diseases, cancer immunotherapy, and organ transplantation.

How does CD28 protein impact regulatory T cells (Tregs)? 06/21/2019

CD28 signaling is important for the function and maintenance of regulatory T cells, which play a role in immune tolerance and suppression of autoimmunity.

How does CD28 protein impact cancer immunotherapy? 11/26/2018

CD28 protein is involved in enhancing the anti-tumor immune response, making it a potential target for cancer immunotherapy.

Are there any approved therapies targeting CD28 protein? 05/27/2017

Currently, there are no FDA-approved therapies specifically targeting CD28 protein, but research is ongoing in this area.

Customer Reviews (3)

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Reviews
08/24/2021

    Its unique characteristics contribute to obtaining clear and detailed structural information, enabling researchers to unravel the intricate complexities of protein interactions and conformational changes.

    08/24/2021

      Researchers can confidently rely on its capabilities to generate precise and significant results, enhancing the understanding of protein function and dynamics.

      08/06/2021

        the CD28 protein's outstanding performance in ELISA and its utility in protein electron microscopy structure analysis make it a highly recommended tool for researchers.

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