>Integrin alpha 4 beta 1
>Human Integrin alpha 4 beta 1 (ITGA4&ITGB1) Heterodimer Protein
Human ITGA4 & ITGB1 Heterodimer Protein, produced by co-expression of ITGA4 and ITGB1, has a calculated MW of 111.4 kDa (ITGA4) & 83.7 kDa (ITGB1). Subunit ITGA4 is fused with an acidic tail at the C-terminus and followed by a polyhistidine tag and subunit ITGB1 contains no tag but a basic tail at the C-terminus. The predicted N-terminus is Tyr 34 (ITGA4) & Gln 21 (ITGB1). The reducing (R) protein migrates as 60-70 kDa and 80-85 kDa (ITGA4) and 100-133 kDa and 135-150 kDa (ITGB1) respectively due to glycosylation.
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
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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.
No activity loss is observed after storage at:
4-8°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
Human ITGA4 & ITGB1 on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.
Immobilized Natalizumab at 1 μg/mL (100 μL/well) can bind Human ITGA4 & ITGB1 (Cat. No. IT1-H52W1) with a linear range of 1-16 ng/mL (QC tested).
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