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Active Recombinant Human CTLA4, Fc-tagged

Cat.No. : CTLA4-160H
Product Overview : The extracellular domain of human CD152 [CTLA-4] (aa 37-160) is fused to the N-terminus of the Fc region of human IgG1.
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Description : CD152 [CTLA-4] and CD28, together with their ligands B7-1 and B7-2, constitute one of the dominant costimulatory pathways that regulate T and B cell responses. CD152 and CD28 are structurally homologous molecules that are members of the immunoglobulin (Ig) gene superfamily. Both CD152 and CD28 are composed of a single Ig V-like extracellular domain, a transmembrane domain and an intracellular domain. CD152 and CD28 are both expressed on the cell surface as disulfide-linked homodimers or as monomers. CD152 was originally identified as a gene that was specifically expressed by cytotoxic T lymphocytes. However, CD152 transcripts have since been found in both Th1 and Th2, and CD4+ and CD8+ T cell clones. Whereas, CD28 expression is constitutive on the surfaces of 95% of CD4+ T cells and 50% of CD8+ T cells and is down regulated upon T cell activation, CD152 expression is upregulated rapidly following T cell activation and peaks approximately 24 hours following activation. Although both CD152 and CD28 can bind to the same ligands, CD152 binds to B71 and B72 with 20-100-fold higher affinity than CD28.
Source : CHO Cells
Species : Human
Tag : Fc
Form : Lyophilized from 0.2μm-filtered solution in PBS.
Bio-activity : Binds both CD80 (B7-1) and CD86 (B7-2) with high affinity and inhibits CD28 signaling competitively. Kills the target cell completely.
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 : CTLA4 cytotoxic T-lymphocyte-associated protein 4 [ Homo sapiens ]
Official Symbol : CTLA4
Synonyms : CTLA4; cytotoxic T-lymphocyte-associated protein 4; celiac disease 3 , CELIAC3; cytotoxic T-lymphocyte protein 4; CD; CD28; CD152; GSE; ICOS; CD152 isoform; celiac disease 3; cytotoxic T-lymphocyte antigen 4; cytotoxic T-lymphocyte-associated antigen 4; cytotoxic T-lymphocyte-associated serine esterase-4; cytotoxic T lymphocyte associated antigen 4 short spliced form; ligand and transmembrane spliced cytotoxic T lymphocyte associated antigen 4; GRD4; CTLA-4; IDDM12; CELIAC3;
Gene ID : 1493
mRNA Refseq : NM_001037631
Protein Refseq : NP_001032720
UniProt ID : P16410
Chromosome Location : 2q33
Pathway : Adaptive Immune System, organism-specific biosystem; Autoimmune thyroid disease, organism-specific biosystem; Autoimmune thyroid disease, conserved biosystem; CTLA4 inhibitory signaling, organism-specific biosystem; Calcineurin-regulated NFAT-dependent transcription in lymphocytes, organism-specific biosystem; Cell adhesion molecules (CAMs), organism-specific biosystem; Cell adhesion molecules (CAMs), conserved biosystem;
Function : protein binding;

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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Are there ongoing clinical trials exploring CTLA-4 inhibitors in combination with other immunotherapies? 05/16/2020

Yes, several clinical trials are investigating the combination of CTLA-4 inhibitors with PD-1 inhibitors and other immunotherapies to improve the overall effectiveness of cancer treatment.

How does the expression of CTLA-4 vary in different types of immune cells? 10/17/2019

CTLA-4 is expressed on various immune cells, including T cells, regulatory T cells (Tregs), and some B cells, contributing to its diverse immunoregulatory functions.

In what ways can CTLA-4 be utilized in organ transplantation? 01/11/2017

Modulating CTLA-4 may have applications in organ transplantation by suppressing the immune response against transplanted tissues and reducing the risk of rejection.

How does CTLA-4 contribute to the maintenance of immune tolerance? 04/30/2016

CTLA-4 is involved in the suppression of autoreactive T cells, contributing to the prevention of autoimmune responses by maintaining immune tolerance.

How does CTLA-4 blockade differ from PD-1/PD-L1 blockade in cancer immunotherapy? 03/18/2016

While both CTLA-4 and PD-1/PD-L1 inhibitors enhance anti-tumor immune responses, they target different checkpoints in the immune system. CTLA-4 primarily regulates T-cell activation in the early stages, whereas PD-1/PD-L1 acts later in the immune response.

Customer Reviews (3)

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Reviews
04/17/2019

    It has become an indispensable tool in my experiments, consistently meeting my needs and providing valuable insights.

    11/25/2018

      The CTLA4 protein is a top-quality product that is sure to fulfill my experimental requirements.

      01/28/2017

        the ease of use and compatibility of the CTLA4 protein with various techniques further enhances its appeal.

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