Sanity check:
Please check that the number of the reflections in the .mtz file is the same as 
in the .sca file.
Please check that the cell dimensions in the MTZ file are the same as in the 
header of the .sca file

If that's true, and it probably is, then this is a general issue with SCALEPACK 
- it appears to apply the resolution cut on cell dimensions from the .x files 
(possibly the first one) that then can differ significantly from the 
post-refined cell dimensions.  Somewhat rarely it shows up as a large effect, 
as here,  but the major issue is that the resolution values in SCALEPACK are 
inaccurate.

Of course you still want scaling stats - perhaps try to integrate with the cell 
dimensions fixed to the post-refined values.  Or switch to XDS.

Phil Jeffrey
Princeton

________________________________
From: CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> on behalf of Vatsal Purohit 
<vpur...@purdue.edu>
Sent: Thursday, September 24, 2020 5:40 PM
To: CCP4BB@JISCMAIL.AC.UK <CCP4BB@JISCMAIL.AC.UK>
Subject: [ccp4bb] Resolution cutoff in CCP4


Hi everyone,



I’ve been having an issue with the CCP4 program scatomtz to convert .sca 
generated from HKL2000 into .mtz. While my resolution cutoff in HKL2000 is 
higher (~ 2.0 A), this program cuts it off at 2.2 A even if I set a higher 
resolution limit in this program. Has anyone else experienced this? Any ideas 
on how to deal with this issue would be appreciated!



Regards,

Vatsal



Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10



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