[ccp4bb] off-topic: negative thermal shift upon ligand binding

2017-07-08 Thread megha abbey
Hello, I am working on DSF to verify if some compounds bind to my protein. I see a negative shift of about 3-4 degrees upon ligand addition (dose-response) in comparison to the protein alone. I assume that this might be due to the binding of compound to the unfolded stated rather than folded

[ccp4bb] off-topic:fluorescence polarization displacement assay

2017-06-21 Thread megha abbey
Hello All, This is an off-topic question. I have some issues regarding Fluorescence Polarization competitive displacement assay and would need some advice. I have developed an in vitro fluorescence polarization based assay using a N-terminus labelled FITC peptide. The peptide is 21 amino acids