CTL-HM141-100μg / 询价
CTL-HM141-500μg / 询价
CTL-HM141-500μgx2 / 询价
Human CTLA-4/CD152 Protein
Recombinant Human CTLA-4/CD152 Protein is expressed from HEK293 with His tag at the C-Terminus.It contains Lys36-Asp161 [Accession | P16410-1].
The protein has a predicted MW of 14.3 kDa. Due to glycosylation, the protein migrates to 28-35 kDa based on Bis-Tris PAGE result.
> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC
Less than 1EU per μg by the LAL method.
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
-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.
Human CTLA-4 on Bis-Tris PAGE under reduced condition. The purity is greater than 95%..
The purity of Human CTLA-4 is greater than 95% as determined by SEC-HPLC.
Immobilized Human CTLA-4, His Tag at 1μg/ml (100μl/well) on the plate. Dose response curve for Human B7-1, hFc Tag with the EC50 of 6.5ng/ml determined by ELISA (QC Test).
Immobilized Human CTLA-4, His Tag at 5μg/ml (100μl/well) on the plate. Dose response curve for Human B7-2, hFc Tag with the EC50 of 125.7ng/ml determined by ELISA.
Immobilized Human CTLA-4, His Tag at 0.5μg/ml (100μl/Well) on the plate. Dose response curve for Anti-CTLA-4 Antibody, hFc Tag with the EC50 of 12.1ng/ml determined by ELISA.
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.
CTLA4; CD152; ICOS; CELIAC3; GRD4; GSE; ALPS5; IDDM12
(1)Merwe V D , P. A. CD80 (B7-1) Binds Both CD28 and CTLA-4 with a Low Affinity and Very Fast Kinetics[J]. Journal of Experimental Medicine, 1997, 185(3):393-404.
