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| | Inhibit Human Recombinant Assay |
| Description: | SSAO/VAP-1: Human recombinant SSAO/VAP-1 amine oxidase activity was determined using the coupled colorimetric method as described for monoamine oxidase, copper-containing amine oxidases and related enzymes (Holt A. and Palcic M., A peroxidase-coupled continuous absorbance plate-reader assay for flavin monoamine oxidases, copper-containing amine oxidases and related enzymes. Nat Protoc 2006; 1: 2498-2505). Briefly, a cloned cDNA template corresponding to residues 34-763 of human SSAO/VAP-1, and incorporating a mouse Ig kappa (κ) signal sequence, N-terminal flag epitope tag and tobacco etch virus (TEV) cleavage site, was assembled in a mammalian expression vector (pLO-CMV) by Geneart AG. This vector containing human SSAO/VAP-1 residues was transfected into CHO-K1 glycosylation mutant cell line, Lec 8. A clone stably expressing human SSAO/VAP-1 was isolated and cultured in large scale. Active human SSAO/VAP-1 was purified and recovered using immunoaffinity chromatography. This was used as the source for SSAO/VAP-1 activity. A high-throughput colorimetric assay was developed using either 96 or 384 well format. Briefly, in a standard 96 well plate assay 50 μL of purified human SSAO/VAP-1 (0.25 μg/mL) in 0.1 M sodium phosphate buffer (pH 7.4) was added into each well. Test compounds were dissolved in DMSO and tested in a Concentration Response Curve (CRC) with 4-11 data points, typically in the micromolar or nanomolar range after incubation with human SSAO/VAP-1 for 30 min at 37° C. |
| Affinity data for this assay | |
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