Re: [ccp4bb] Refinement in half occupancy

2008-06-10 Thread Matthew Chu
Hi Bithika, Basically, I combined the coordinates of the two different conformations of the ligand (e.g. *ZZZ*), which modeled in Coot individually, in one pdb, and then put A/B label in front of the residue code and set the occupancy to 0.5, e.g. ATOM 4052 O2A*AZZZ* X1234 -42.055 -10.565

[ccp4bb] Refinement in half occupancy

2008-06-09 Thread Matthew Chu
Dear All, Can anyone teach me how to refine a ligand in a protein structure with half occupancy in refmac? I have tried to combine the coordinates of the two different conformations of that particular ligand in one pdb, after modeling in Coot individually, and then changed the occupancy to 0.5

Re: [ccp4bb] Refinement in half occupancy

2008-06-09 Thread Nian Huang
It should be straight forward. A good example you can use is to make an alternate conformation of a residue in coot. Then you can follow the generated pdb to modify your ligand. Are you sure refmac won't run? What is the error message from refmac? Nian Huang, Ph.D. Dept. of Biochemistry UT