Analysis Affinity and Kinetics of Axl Receptor Tyrosine Kinase with Ligand Gas6 by KinExA (CAT#: STEM-MB-0063-CJ)

Introduction

Aberrant signaling through the Axl receptor tyrosine kinase has been associated with a myriad of human diseases, most notably metastatic cancer, identifying Axl and its ligand Gas6 as important therapeutic targets. And increased Gas6 binding affinity was critical and correlative with the ability of decoy receptors to potently inhibit metastasis and disease progression in vivo.The KinExA instrument can be used to measure equilibrium binding and association rate constants for the Gas6-Axl interactions.

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Principle Applications Procedure Materials Notes Related Products

Principle

KinExA is a two-stage analysis system. In the first stage, a number of solutions are prepared, where one partner remains constant (constant binding partner, or CBP) and the other (titrant) is variable, usually serially diluted. As the titrant is added, the free CBP decreases and is analysed by a sophisticated and precise microfluorescence measurement device. The signal generated can be mathematically related to the affinity (KD) of the two molecules for each other, as well as the kinetic parameters of binding (kon) and dissociation (koff).

Applications

Immunology/Inflammation, Toxicology

Procedure

1. preparation of the functionalized beads which will capture the analyte for measuremen.
2. preparation of a series of solutions consisting of a constant initial concentration of one component of the binary reaction and serial dilutions of the other reactant. The component that is kept constant is the constant binding partner (CBP) , and is the one which will be analyzed.
3. each reaction mixture is sampled and the fluorescence of free CBP bound to the capture beads is obtained for subsequent numerical analysis.

Materials

• Sample Type: Antibodies, Cells, Small Molecules, Proteins, DNA, Lipids, Viruses, Serum, & More
• Equipment: Kinetic Exclusion Assay (KinExA)

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