Re: [ccp4bb] Cut ligand or keep in whole piece when only part of it can be resolved

2010-05-18 Thread SIPPEL,KATHERINE H
Hi Jay, Are you sure the missing part of the ligand is disordered and not cleaved? Depending on how precious the enzyme and the ligand are, it might be worth denaturing the crystals, centrifugally filtering the unfolded protein and running mass spec on the flow-through. My vote is build what

[ccp4bb] Cut ligand or keep in whole piece when only part of it can be resolved

2010-05-18 Thread Jay Pan
Hi everyone, I have two types of ligands cocrystallized with my protein, ligand 1 and ligand 2. I am only interested in resolving ligand 2. In my electron density map, only part of ligand 1 can be identified. Is it ok for me to cut ligand 1 so only the identifiable part is left or should I keep