Hello,
I want to ask you all for suggestion of any assay of equipment which would require low concentration of ligand to study interaction with protein(K_on and K_off). I understand that ITC require milli-molar concentrations which i cannot afford and MST also requires low milli molar concentrations. Is there any other alternatives, i would like to co crystallize this protein and ligands but, do to this peptides(as short as they may be are part of an Intrinsically disordered protein). I wish to study the interactions prior to attempting to co-crystallize. The peptide fragments were synthesized based on binding studies performed with the full protein with the interaction partner(which was in the micromolar cocentrations). Let me know your opinions.