Name: Human ICOS/CD278 Protein (ICO-HM201)
Brand: KactusBio
SKU: ICO-HM201-100UG
Price: 346.5 USD
Availability: InStock

Express System: HEK293
Product Tag: C-hFc
Purity: > 95% as determined by Bis-Tris PAGE;> 90% as determined by HPLC
Activity: Immobilized Human B7-H2, His Tag at 1ug/ml (100ul/Well) on the plate. Dose response curve for Human ICOS, hFc Tag with the EC50 of 15.2ng/ml determined by ELISA (QC Test). The affinity constant of 5.42 nM as determined in SPR assay (Biacore T200). See testing image for detail.
Amino Acid Range: Glu21-Phe141

Catalog #ICO-HM201

Size

100UG

500UG

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Product Description	Recombinant Human ICOS/CD278 Protein is expressed from HEK293 with hFc tag at the C-Terminus.It contains Glu21-Phe141.
Product Background	Inducible co-stimulator (ICOS), also called AILIM (activiation-inducible lymphocyte immunomediatory molecule) and CRP-1 (CD28-related protein-1), is a member of the growing CD28 family of immune costimulatory receptors. Other family members are CD28, CTLA-4 and PD-1. Human ICOS is a homodimeric type I transmembrane protein consisting of 199 amino acids (aa) with a putative 20 aa signal sequence, a 121 aa extracellular domain, a 23 aa transmembrane region, and a 35 aa cytoplasmic domain.
Product Category	Recombinant Protein / Antibody discovery

Protein	ICOS/CD278
Synonyms	AILIM; CD278; CRP-1; CVID1; ICOS; MGC39850
Accession	Q9Y6W8-1
Species	Human
Biotinylated	no
Amino Acid Range	Glu21-Phe141
Molecular Weight	The protein has a predicted MW of 40.5 kDa. Due to glycosylation, the protein migrates to 52-60 kDa based on Bis-Tris PAGE result.
Activity	Immobilized Human B7-H2, His Tag at 1ug/ml (100ul/Well) on the plate. Dose response curve for Human ICOS, hFc Tag with the EC50 of 15.2ng/ml determined by ELISA (QC Test). The affinity constant of 5.42 nM as determined in SPR assay (Biacore T200). See testing image for detail.
Product Tag	C-hFc
Expression System	HEK293
Purity	> 95% as determined by Bis-Tris PAGE;> 90% as determined by HPLC
Endotoxin	Less than 1EU per ug by the LAL method.

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	Centrifuge the tube before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water.
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.

	Human ICOS, hFc Tag captured on CM5 Chip via Protein A can bind Cynomolgus B7-H2, His Tag with an affinity constant of 5.42 nM as determined in SPR assay (Biacore T200).
	Immobilized Human B7-H2, His Tag at 1ug/ml (100ul/Well) on the plate. Dose response curve for Human ICOS, hFc Tag with the EC50 of 15.2ng/ml determined by ELISA (QC Test).
	Human ICOS on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.
	The purity of Human ICOS is greater than 90% as determined by SEC-HPLC.