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Recombinant Human CTLA4/CD152

Recombinant Human CTLA4/CD152

Manufacturer	Cell Sciences
Category	Oncology By Cell Type Carcinoma Peptides & Proteins Recombinant Proteins
Type	Proteins
Specific against	Human
Amount	25 ug
Item no.	CS-CRC012B
Targets	CD152
eClass 6.1	34160400
eClass 9.0	42020190
Available
Description	Recombinant human CTLA-4/CD152 is a homodimeric, glycosylated polypeptide chain. Each subunit (40 kDa) is fused to a polypeptide linker to the Fc portion of human IgG1. CTLA-4 is expressed in low copy number by T-cells only after activation, but it binds CD28-ligand with approximately 20-fold higher affinity than CD28. A soluble form of the extracellular domain of CTLA-4 has been shown to bind CD28-ligand with high avidity and to suppress T-cell-dependent antibody responses, in vivo . Large doses of this soluble protein also suppress responses to a second immunization.
Endotoxin Level	< 0.1 ng/ug of CTLA4
Formulation	Lyophilized from a sterile filtered solution without additives
Molecular Weight	80.0 kDa
Reconstitution	Centrifuge vial prior to opening. First add sterile distilled water to the vial to fully solubilize the protein to a concentration not less than 100 ug/ml. After complete solubilization of the protein, it can be further diluted to other aqueous solutions.
Storage and Stability	Store lyophilized protein at -20C to -80C. Reconstituted protein is stable for 1 week in working aliquots. For long term storage, aliquot and store at -20C to -80C with a carrier protein (0.1% HSA or BSA) as a stabilizer. Please note that the addition of any carrier protein into this product may produce unwanted endotoxin. This depends upon the particular application employed. Avoid repeated freeze-thaw cycles.

Note: The presented information and documents (Manual, Product Datasheet, Safety Datasheet and Certificate of Analysis) correspond to our latest update and should serve for orientational purpose only. We do not guarantee the topicality. We would kindly ask you to make a request for specific requirements, if necessary.

All products are intended for research use only (RUO). Not for human, veterinary or therapeutic use.