Login Register
icon_bulk_orderBulk order Acrobiosystems for English
0
There is no goods in the shopping cart !
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9
Your Position: Home > Immune Checkpoint Proteins > CTLA-4 > CT4-H5255

Human CTLA-4 / CD152 Protein, Fc Tag (MALS verified)

  • Synonym
    CTLA4,CD152
  • Source
    Human CTLA-4, Fc Tag (CT4-H5255) is expressed from human 293 cells (HEK293). It contains AA Ala 37 - Ser 160 (Accession # NP_005205.2).
    Predicted N-terminus: Ala 37
  • Molecular Characterization
    Online(Ala 37 -  Ser 160) NP_005205.2

    This protein carries a human IgG1 Fc tag at the C-terminus.

    The protein has a calculated MW of 39.9 kDa. As a result of glycosylation, the protein migrates as 45-55 kDa under reducing (R) condition, and 90 kDa under non-reducing (NR) condition (SDS-PAGE).

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >98% as determined by SDS-PAGE.

    >90% as determined by SEC-MALS.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
Human CTLA-4, Fc Tag (Cat. No. CT4-H5255) SDS-PAGE gel

Human CTLA-4, Fc Tag on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 98%.

SEC-MALS
Human CTLA-4, Fc Tag (Cat. No. ) MALS images

The purity of Human CTLA-4, Fc Tag (Cat. No. CT4-H5255) is more than 90% and the molecular weight of this protein is around 82-100 kDa verified by SEC-MALS.

Bioactivity-ELISA
Human CTLA-4, Fc TagHuman CTLA-4, Fc Tag (Cat. No. CT4-H5255) ELISA bioactivity

Immobilized Human B7-2, His Tag (Cat. No. CD6-H5223) at 10 μg/mL (100 μL/well) can bind Human CTLA-4, Fc Tag (Cat. No. CT4-H5255) with a linear range of 2-78 ng/mL (QC tested).

Human CTLA-4, Fc TagHuman CTLA-4, Fc Tag (Cat. No. CT4-H5255) ELISA bioactivity

Immobilized Human CTLA-4, Fc Tag (Cat. No. CT4-H5255) at 10 μg/mL (100 μL/well) can bind Human B7-1, His Tag (Cat. No. B71-H5228) with a linear range of 0.156-1.25 μg/mL (Routinely tested).

Human CTLA-4, Fc TagHuman CTLA-4, Fc Tag (Cat. No. CT4-H5255) ELISA bioactivity

Serial dilutions of Ipilimumab were added into Human CTLA-4, Fc Tag (Cat. No. CT4-H5255): Biotinylated Human B7-1, Fc,Avitag (Cat. No. B71-H82F2) binding reactions. The half maximal inhibitory concentration (IC50) is 0.8260 μg/mL (Routinely tested).

Human CTLA-4, Fc TagHuman CTLA-4, Fc Tag (Cat. No. CT4-H5255) ELISA bioactivity

Serial dilutions of Ipilimumab were added into Human CTLA-4, Fc Tag (Cat. No. CT4-H5255): Biotinylated Human B7-2, Fc,Avitag (Cat. No. CD6-H82F5) binding reactions. The half maximal inhibitory concentration (IC50) is 0.1701 μg/mL (Routinely tested).

Bioactivity-BLI
Human_FcRn_Heterodimer_Protein_Bli

Loaded Human CTLA-4, Fc Tag (Cat. No. CT4-H5255) on Protein A Biosensor, can bind Human B7-1, His Tag (Cat. No. B71-H5228) with an affinity constant of 0.52 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Human_FcRn_Heterodimer_Protein_Bli

Loaded Human CTLA-4, Fc Tag (Cat. No. CT4-H5255) on Protein A Biosensor, can bind Human B7-2, His Tag (Cat. No. CD6-H5223) with an affinity constant of 1.9 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

  • Citations
  • Background
    CTLA-4 (Cytotoxic T-Lymphocyte Antigen 4) is also known as CD152 (Cluster of differentiation 152), is a protein receptor that downregulates the immune system. CTLA4 is a member of the immunoglobulin superfamily, which is expressed on the surface of Helper T cells and transmits an inhibitory signal to T cells. The protein contains an extracellular V domain, a transmembrane domain, and a cytoplasmic tail. Alternate splice variants, encoding different isoforms. CTLA4 is similar to the T-cell co-stimulatory protein, CD28, and both molecules bind to CD80 and CD86, also called B7-1 and B7-2 respectively, on antigen-presenting cells. CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Intracellular CTLA4 is also found in regulatory T cells and may be important to their function. Fusion proteins of CTLA4 and antibodies (CTLA4-Ig) have been used in clinical trials for rheumatoid arthritis.
  • Clinical and Translational Updates
      
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

Comments (0)


ETD of in-stock products: 2 business days

Price(USD) : $180.00

Price(USD) : $820.00

Promotion & Exhibitions



Drug Development Status

  • Number of Launched Drugs:1 Details
  • Number of Drugs in Clinical Trials:48 Details
  • Latest Research Phase:Approved

Datasheet & Documentation

Request for DMF
DMF (Drug Master File)

Contact Us

+1  800-810-0816 (US)
+86 400-682-2521 (AP)

New Product Launch

Questions & Comments

This web search service is supported by Google Inc.

totop
Call us
Call us
North America: +1 800-810-0816 (Toll Free)
Asia & Pacific: +86 400-682-2521
Fax
Fax
+1 888-377-6111
Address
Address
1 Innovation Way, Newark, DE 19711, USA

Leave a message