[ccp4bb] unique reflections vs unique observations

2012-04-15 Thread Naveed A Nadvi
Dear CCP4 users, I am a bit confused about the use of these terms in regards to structure refinement statistics. When I process my data with SCALA, the program outputs statistics in terms of total and unique numbers of observations. However, when I use the MTZ files with REFMAC, the final PDB

Re: [ccp4bb] unique reflections vs unique observations

2012-04-15 Thread Andrew Leslie
Dear Naveed, The situation can indeed be a bit confusing. The term observations is actually used with two different senses in SCALA. The first is in text such as the following: Number of observations read :62154 Number of unique reflections read

Re: [ccp4bb] unique reflections vs unique observations

2012-04-15 Thread Jim Pflugrath
I am aware that some programs report interesting numbers. In addition to what Andrew wrote about resolution cutoffs and truncated reflections, I'd like to mention another issue with systematically absent reflections. The number of observations or reflections that come from an integration

[ccp4bb] fwd:

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[ccp4bb] fwd:

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[ccp4bb] Real Space Refine Zone for Ligand

2012-04-15 Thread Dipankar Manna
Dear Crystallographers, After one round of refinement (restrained refinement) with ligand, I inport the .cif file through '-Import CIF Dictionary' into Coot. But when I am going for '-Real Space Refine Zone' for the ligand, its showing Refinement set up failure. Failed to find restrained for:

Re: [ccp4bb] software to generate protein topology diagram like those available at PDBsum webserver

2012-04-15 Thread Parthasarathy Sampathkumar
Dear All, Thanks to Herb, John, Simanshu, and Anu for link: http://www.ebi.ac.uk/thornton-srv/databases/pdbsum/Generate.html to generate PDBsum like topology diagrams. Partha On Sun, Apr 15, 2012 at 8:08 PM, Parthasarathy Sampathkumar spart...@gmail.com wrote: Dear All, I would like to