[ccp4bb] RNAse A inhibitors?

Hello! I am having a difficult time locating a supplier for RNAse A inhibitors: 2'-CMP, 3'-CMP, 2'-UMP, 3'-UMP. Any suggestions would be very much appreciated! Kateryna -- ExchangeDefender Message Security: Click below to verify authenticity

[ccp4bb] Refinement of covalent ligand in Refmac5

Hello! I have an FAD cofactor that appears to be covalently bound to the Asp side chain (~1.6 A away). I was told that I need to refine the structure after indicating the covalent linkage in the pdb. If I add a line in the pdb LINK and then refine in Refmac5, FAD gets all messed up