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Titration ELISA as a Method to Determine the Dissociation Constant of Receptor Ligand Interaction
JoVE Journal
Biochemistry
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JoVE Journal Biochemistry
Titration ELISA as a Method to Determine the Dissociation Constant of Receptor Ligand Interaction
DOI:

12:38 min

February 15, 2018

Chapters

  • 00:04Title
  • 00:45Immobilization of the Receptor (Integrin α2A-domain) to a Microtiter Plate
  • 02:09Preparation of a Serial Dilution Row of the Ligand (Rhodocetin)
  • 03:25Binding of Ligand at Different Concentrations to Immobilized Receptor
  • 05:03Quantification of Receptor-bound Ligand by ELISA
  • 07:06Evaluation of the Titration Signals
  • 09:30Results: Rhodocetin Binds with Lower Affinity to Mutant Integrin α2A-domain
  • 10:58Conclusion

Summary

Automatic Translation

A detailed protocol to perform a titration ELISA is described. Moreover, a novel algorithm is presented to evaluate titration ELISAs and to obtain a dissociation constant of binding of a soluble ligand to a microtiter plate-immobilized receptor.

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