膜杰作
Star Staining
分子别名（Synonym）
Integrin alpha 5 beta 1,ITGA5&ITGB1
表达区间及表达系统（Source）
Biotinylated Human ITGA5&ITGB1 Heterodimer Protein, His,Avitag&Tag Free (IT1-H82Wa) is expressed from human 293 cells (HEK293). It contains AA Phe 42 - Tyr 995 (ITGA5) & Gln 21 - Asp 728 (ITGB1) (Accession # P08648-1(ITGA5) & P05556-1(ITGB1)).
Predicted N-terminus: Phe 42 (ITGA5) & Gln 21 (ITGB1)
Request for sequence
蛋白结构（Molecular Characterization）
Biotinylated Human ITGA5&ITGB1 Heterodimer Protein, His,Avitag&Tag Free, produced by co-expression of ITGA5 and ITGB1, has a calculated MW of 112.4 kDa (ITGA5) and 83.7 kDa (ITGB1). Subunit ITGA5 is fused with an acidic tail at the C-terminus and followed by a polyhistidine tag and an Avi tag (Avitag™) and subunit ITGB1 contains no tag but a basic tail at the C-terminus. The non-reducing (NR) protein migrates as 100-115 kDa (ITGA5) and 135-150 kDa (ITGB1) respectively due to glycosylation.
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.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 150 mM NaCl, pH7.5. 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:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
电泳（SDS-PAGE）
Biotinylated Human ITGA5&ITGB1 Heterodimer Protein, His,Avitag&Tag Free on SDS-PAGE under non-reducing (NR) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.
活性（Bioactivity）-ELISA
Immobilized Recombinant Human Fibronectin at 2 μg/mL (100 μL/well) can bind Biotinylated Human ITGA5&ITGB1 Heterodimer Protein, His,Avitag&Tag Free (Cat. No. IT1-H82Wa) with a linear range of 1-16 ng/mL (QC tested).
Protocol
活性（Bioactivity）-SPR
Biotinylated Human ITGA5&ITGB1 Heterodimer Protein, His,Avitag&Tag Free (Cat. No. IT1-H82Wa) captured on Biotin CAP-Series S Sensor Chip can bind Human Fibronectin with an affinity constant of 4.4 nM as determined in a SPR assay (Biacore T200) (Routinely tested).
Protocol
背景（Background）
Integrin alpha 5 beta 1 / Integrin α5β1, which is a major cellular receptor for the extracellular matrix protein fibronectin and plays a fundamental role during mammalian development., is composed of α5 (ITGA5/CD49e) and β1 (ITGB1/CD29) subunits. Integrins are adhesion receptors that transmit bidirectional signals across the plasma membrane. The Integrin alpha 5 beta 1 and its primary extracellular matrix ligand fibronectin (Fn) are of great biological importance.
