Dear Bernhard, structure factor files deposited by the users (xxx-sf.cif) may or may not contain amplitudes and map coefficients. But the PDB provides also files with names such as xxxx_validation_2fo-fc_map_coef.cif that can be converted either to MTZ files or to maps, as documented here: https://www.rcsb.org/docs/general-help/electron-density-maps-and-coefficient-files There is also https://pdb-redo.eu where you can find re-refined MTZ files.
Best wishes, Marcin On Mon, Sep 15, 2025 at 9:47 PM Bernhard Spingler <[email protected]> wrote: > > Dear all, > Sorry for this basic question: As there are no more mtz files to be > downloaded from the Protein Database as of June 2024 and generating a map > from name-sf.cif does not work either ("WARNING:: Ooops - all the structure > factor amplitudes appear to be zero - or missing. > WARNING:: Are you sure this file (name-sf.cif) contains calculated structure > factors? > WARNING:: No map calculated."): > How do I easily generate a map in Coot without using CCP4? > Thanks a lot for your help! > Best regards > Bernhard > PS: I use WinCoot 1.1.18, but I had the same problem in WinCoot 0.9.8.7 > > ######################################################################## > > To unsubscribe from the COOT list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=COOT&A=1 > > This message was issued to members of www.jiscmail.ac.uk/COOT, a mailing list > hosted by www.jiscmail.ac.uk, terms & conditions are available at > https://www.jiscmail.ac.uk/policyandsecurity/ ######################################################################## To unsubscribe from the COOT list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=COOT&A=1 This message was issued to members of www.jiscmail.ac.uk/COOT, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
