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Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free, produced by co-expression of ITGA4 and ITGB7, has a calculated MW of 111.4 kDa (ITGA4) & 83.7 kDa (ITGB7). Subunit ITGA4 is fused with an acidic tail at the C-terminus and followed by a polyhistidine tag and subunit ITGB7 contains no tag but a basic tail at the C-terminus. The protein migrates as 55 kDa, 80 kDa, 100-120 kDa and 130-150 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under non-reducing (NR) condition (SDS-PAGE) due to glycosylation.
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 150 mM NaCl, pH7.5 with trehalose as protectant.
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Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
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:
Human ITGA4&ITGB7 Heterodimer Protein, His Tag&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% (With Star Ribbon Pre-stained Protein Marker).
The purity of Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free (Cat. No. IT7-H52W4) is more than 85% and the molecular weight of this protein is around 210-250 kDa verified by SEC-MALS.
Immobilized Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free (Cat. No. IT7-H52W4) at 2 μg/mL (100 μL/well) can bind Monoclonal Anti-Human ITGA4&ITGB7 Antibody, Human IgG4 with a linear range of 0.1-2 ng/mL (Routinely tested).
Immobilized Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free (Cat. No. IT7-H52W4) at 1 μg/mL (100 μL/well) can bind Human MAdCAM-1, Fc Tag (Cat. No. MAM-H5253) with a linear range of 0.2-4 ng/mL (Routinely tested).
Immobilized Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free (Cat. No. IT7-H52W4) at 2 μg/mL (100 μL/well) can bind Anti-Human Integrin α 4 β 7 MAb, Human IgG1(ADCC Disable) with a linear range of 0.06-2 ng/mL (Routinely tested).
Anti-Human Integrin α 4 β 7 MAb, Human IgG1 (ADCC Disable) captured on Protein A Chip can bind Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free (IT7-H52W4) with an affinity constant of 1.37 nM as determined in a SPR assay (Biacore 8K) (QC tested).
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