Biaffin - Service für Biomolekulare Interaktionsanalyse

Protein/protein interactions

1. QUALITATIVE Interaction Analysis :

  • Determine qualitatively the interaction of given binding partners for estimation of the KD-value and of the expected kinetic of the interaction
  • Optimise buffer conditions to reduce unspecific binding
  • Determine the influence of pH, ionic strength and ligands on the given interaction
  • Optimise regeneration conditions including tests of functionality of the immobilised ligand after regeneration
  • Investigate mass transfer effects

2. QUANTITATIVE Interaction Analysis :

  • Determine concentration series of analytes, the basis for determining association rate constants
  • Calculate association and dissociation rate constants (kass, kdiss) by determining a row of concentrations
  • Evaluation of binding data including blank subtraction
  • Calculation of KD-values using different algorithms depending on the binding kinetics
  • Determination of the formation of multiple protein complexes

Four parallel flow cells permit simultaneous interaction analysis of several interaction partners (e.g. four isoforms, deletion mutants or modifications of the same protein as shown below in the figure).

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