Well REFMAC tells you how many reflections are used.. And if you do mtzdmp data.mtz
that will tell you too.. With such low completeness R factors are pretty meaningless - you must have many more parameters than observations so that does often give low Rfactors.. On Wed, 28 Feb 2024 at 16:21, Justin Cruite <[email protected]> wrote: > Thanks everyone, > > I agree, 18.4% Rwork and Rfree is too good to be true for a 3.4 Å dataset. > The data was processed using autoProc and the staranisano mtz was used for > MR. The completeness is only 38%. It could be that the Rfree and Rwork > reflection sets are small because of this? What is the best way to check > the number of reflections used for Rwork and Rfree? Is this dataset usable > at all? > > Thanks! > > Justin > > On Wed, Feb 28, 2024 at 10:21 AM nicfoos <[email protected]> wrote: > >> Hello Justin, >> >> There is something weird in your results. You mention Rwork/Rfree of >> 0.1837. >> This means a pretty good refinement and also is very unusual to be >> obtain for a resolution of 3.37. >> Additionally you should not have Rfree = Rwork. >> I suspect something wrong with you Rfree reflections sets. What size is >> it ? Is your dataset complet ? >> How did you cut the res. ? >> >> I hope this may help you. >> >> Nicolas >> >> >> >> On 2024-02-28 16:10, Justin Cruite wrote: >> > Hi everyone, >> > >> > What does it mean if your Rwork and Rfree are exactly the same? >> > >> > I solved a 3.37 Å structure with Phaser-MR and immediately ran 10 >> > cycles of refinement with wxc = 0.1. Everything else at default. The >> > Rwork and Rfree are both 0.1837. Is this bad? >> > >> > Thank you! >> > >> > Justin >> > >> > ------------------------- >> > >> > To unsubscribe from the CCP4BB list, click the following link: >> > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 >> > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
