[ccp4bb] oligomer ligand building

2010-10-28 Thread Changyi Xue
Hi, all I am trying to build an oligomer ligand. I have obtained all the cif files for the monomers from HIC-UP. I tried to build several monomers in using coot. Then I modified the pdb file and stated the link in the pdb head (LINKR X ABC 1 Y ABC 2X-Y). However, when using re

[ccp4bb]

2010-08-04 Thread Changyi Xue
Dear all, In my structure, there is a ligand, which contains a sugar ring. In the process of refinement, refmac always tried to distort the sugar ring to fit into the density. Is there any way to fix or restrain the ring conformation more tightly? I know CNS has such function, just wanderi