B7-1 Protein, Human, Recombinant (His & Avi)

Cluster of differentiation 80 (also CD80 and B7-1) is a protein found on dendritic cells, activated B cells and monocytes that provides a costimulatory signal necessary for T cell activation and survival. It is the ligand for two different proteins on the T cell surface: CD28 and CTLA-4. B7-1 Protein, Human, Recombinant (His & Avi) is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 26.8 kDa and the accession number is P33681-1.

B7-1 Protein, Human, Recombinant (His & Avi)

パッケージサイズ	在庫状況	単価(税別)
100 μg	約5 days	￥ 80,000
500 μg	約5 days	￥ 321,500
1 mg	約5 days	￥ 535,000

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説明

Species	Human
Expression Host	HEK293 Cells
Tag	C-His-Avi
Accession Number	P33681-1
別名	B71, CD80, BB1, LAB7, B7-1, B7.1, B7, CD28LG1, CD80 molecule
Construction	Val35-Asn242
Protein Purity	> 95% as determined by Tris-Bis PAGE; > 95% as determined by HPLC
分子量	26.8 kDa (predicted). Due to glycosylation, the protein migrates to 50-70 kDa based on Tris-Bis PAGE result.

Endotoxin	< 1 EU/μg by the LAL method.
Formulation	Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS (pH 7.4). Typically, 8% trehalose is incorporated as a protective agent before lyophilization.
Reconstitution	Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing.
Stability & Storage	It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at-80℃. For reconstituted proteinsolutions, the solution can be stored at -20°c to -80'c for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
Shipping	In general, Lyophilized powders are shipping with blue ice.
Research Background	Cluster of differentiation 80 (also CD80 and B7-1) is a protein found on dendritic cells, activated B cells and monocytes that provides a costimulatory signal necessary for T cell activation and survival. It is the ligand for two different proteins on the T cell surface: CD28 and CTLA-4.

参考文献

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.

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B7-1 Protein, Human, Recombinant (His & Avi)

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