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Biotinylated Mouse CD28 Protein, His,Avitag™, active dimer (MALS verified)

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分子别名(Synonym)

CD28,Tp44

表达区间及表达系统(Source)

Biotinylated Mouse CD28, His,Avitag (CD8-M82E3) is expressed from human 293 cells (HEK293). It contains AA Asn 20 - Lys 149 (Accession # P31041-1).

Predicted N-terminus: Asn 20

Request for sequence

蛋白结构(Molecular Characterization)

Online(Asn 20 - Lys 149) P31041-1

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).

The protein has a calculated MW of 18.6 kDa. As a result of glycosylation, the protein migrates as 34-42 kDa under reducing (R) condition, and 60-70 kDa under non-reducing (NR) condition (SDS-PAGE).

标记(Biotinylation)

Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

蛋白标记度(Biotin:Protein Ratio)

Passed as determined by the HABA assay / binding ELISA.

内毒素(Endotoxin)

Less than 1.0 EU per μg by the LAL method.

纯度(Purity)

>90% as determined by SDS-PAGE.

>90% as determined by SEC-MALS.

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

Contact us for customized product form or formulation.

重构方法(Reconstitution)

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存储(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:

  1. -20°C to -70°C for 12 months in lyophilized state;
  2. -70°C for 3 months under sterile conditions after reconstitution.
 

电泳(SDS-PAGE)

Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) SDS-PAGE gel

Biotinylated Mouse CD28, His,Avitag on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.

SEC-MALS

Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) MALS images

The purity of Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) is more than 90% and the molecular weight of this protein is around 57-69 kDa verified by SEC-MALS.

Report

 

活性(Bioactivity)-ELISA

Biotinylated Human ELISA

Immobilized Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) at 1 μg/mL (100 μL/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate, can bind Mouse B7-1, Fc Tag (Cat. No. CD0-M5259) with a linear range of 0.6-10 ng/mL (QC tested).

Protocol

Biotinylated Human  ELISA

Immobilized Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) at 1 μg/mL (100 μL/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate, can bind Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) with a linear range of 0.2-5 ng/mL (Routinely tested).

Protocol

Biotinylated Human ELISA

Immobilized Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) at 1 μg/mL (100 μL/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate, can bind Human B7-1, Fc Tag (Cat. No. B71-H5259) with a linear range of 0.2-2 ng/mL (Routinely tested).

Protocol

背景(Background)

T-cell-specific surface glycoprotein CD28 is also known as TP44, is a single-pass type I membrane protein which contains one Ig-like V-type (immunoglobulin-like) domain. is one of the molecules expressed on T cells that provide co-stimulatory signals, which are required for T cell activation. CD28 is the receptor for CD80 (B7.1) and CD86 (B7.2). When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells.

 

 

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CD28靶点信息
英文全称:T-cell-specific surface glycoprotein CD28
中文全称:T细胞特异性表面糖蛋白CD28
种类:Homo sapiens
上市药物数量:0详情
临床药物数量:23详情
最高研发阶段:临床三期
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