Recombinant Human CTLA4 protein, C-His Tag, low endotoxin
Product Description
Cat
IMP-144
Official Symbol
CTLA4
Product Overview
Recombinant Human CTLA4 protein(AA Ala 37-Phe 162)(Accession # NP_005205.2) is expressed from human 293 cells (HEK293). This protein carries a polyhistidine tag at the C-terminus.
Expression System
HEK293
Species
Human
Tag
C-His Tag
Form
Lyophilized from sterile PBS, pH7.4, 10% trehalose.
Molecular Mass
This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 15.4 kDa. The protein migrates as 25-30 kDa under reducing (R) condition (SDS-PAGE) due to different extent glycosylation.
Protein length
Ala 37-Phe 162
Endotoxin
Less than 0.01 EU per ug by the LAL method.
Purity
>95% as determined by SDS-PAGE.
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: -20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution.
Reconstitution
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 mg/ml. Centrifuge the vial at 4ºC before opening to recover the entire contents.
SDS-PAGE
SDS-PAGE

Human CTLA-4, His Tag, low endotoxin on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA 1
Bioactivity-ELISA

Immobilized Human B7-1, Fc Tag at 2 ug/mL (100 uL/well) can bind Human CTLA-4, His Tag, low endotoxin with a linear range of 0.2-3 ng/mL (QC tested).

Bioactivity-ELISA 2
Bioactivity-ELISA

Immobilized Human B7-2, Fc Tag at 2 ug/mL (100 uL/well) can bind Human CTLA-4, His Tag, low endotoxin with a linear range of 1-6 ng/mL (Routinely tested).

Data Sheet MSDS
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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