Biotinylated Human CTLA-4/CD152 Protein (CTL-HM401B) Summary
Product Description |
Recombinant Biotinylated Human CTLA-4 Protein is expressed from HEK293 with His tag and Avi tag at the C-Terminus.It contains Lys36-Asp161. |
Product Background |
CTLA-4 (cytotoxic T-lymphocyte-associated protein 4), also known as CD152, is a protein receptor that, functioning as an immune checkpoint, downregulates immune responses.CTLA4 is constitutively expressed in regulatory T cells but only upregulated in conventional T cells after activation – a phenomenon which is particularly notable in cancers. It acts as an "off" switch when bound to CD80 or CD86 on the surface of antigen-presenting cells. |
Product Category |
Recombinant Protein / Antibody discovery / Immune checkpoint proteins |
Biotinylated Human CTLA-4/CD152 Protein (CTL-HM401B) Specifications/Details
Protein |
CTLA-4/CD152 |
Synonyms |
CTLA4; CD152; ICOS; CELIAC3; GRD4; GSE; ALPS5; IDDM12 |
Accession |
|
Species |
Human |
Biotinylated |
yes |
Amino Acid Range |
Lys36-Asp161 |
Molecular Weight |
The protein has a predicted MW of 16.3 kDa. Due to glycosylation, the protein migrates to 25-30 kDa based on Bis-Tris PAGE result. |
Activity |
Immobilized Biotinylated Human CTLA-4, His Tag at 1ug/ml (100ul/well) on the streptavidin precoated plate (5ug/ml). Dose response curve for Human B7-1, hFc Tag with the EC50 of 2.4ng/ml determined by ELISA (QC Test). See testing image for detail. |
Product Tag |
C-His-Avi |
Expression System |
HEK293 |
Purity |
> 95% as determined by Bis-Tris PAGE;> 95% as determined by HPLC |
Endotoxin |
Less than 1 EU per ug by the LAL method. |
Shipping, Reconstitution, & Storage
Form |
Lyophilized |
Shipping |
Shipped at ambient temperature. |
Formulation |
Lyophilized from 0.22um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization. |
Reconstitution |
Dissolve the lyophilized protein in distilled water. It is recommended to resuspend at 0.5 mg/mL if the lyophilized powder is 100 ug or less, at 1mg/ml for 500ug or 1mg lyophilized powder. Do not mix by vortex or vigorous shaking. |
Stability And Storage |
-20 to -80°C for 12 months as supplied from date of receipt.;-80°C for 3 months after reconstitution.;Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles. |
Validation Images
Related Products
Have more questions?
Check out our Frequently Asked Questions page for more details about product specifications, ordering, and shipments.
Contact Us
More from ADC Target Proteins
Recently viewed