Reflection cif files from the PDB do not always have cell and symmetry information in them, particularly the older ones, and it sounds like this is your case. In that case, you need to manually copy the cell information from the PDB web page into the ccp4i interface before running.
HTH Martyn From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Uma Ratu Sent: 17 May 2012 20:04 To: ccp4bb Subject: [ccp4bb] Covert Structure Factor to mtz Dear All: I try to convert the .cif files (the structure factor files from PDB) to mtz file. >From ccp4i, I chose "convert to/modify/extend mtz" for this purpose. But program keep complanining: "no cell information in keywords or files" I open the .cif file in text, and could not find any information about cell information. Is there a easy way to convert the .cif file from PDB to mtz? Thank you for advice Uma
