[ccp4bb] Rfree continues to decrease while Rcrys is more or less static

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

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From: Tommi Kajander tommi {- dot -} kajander {- at -} HELSINKI {- dot -} FI
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Subject: truncate ref
From: Bernhard Rupp bernhardrupp {- at -} SBCGLOBAL {- dot -} NET
Date: 2007-04-23

Subject: Rfree continues to decrease while Rcrys is more or less static
From: Vineet Gaur vineetgaur1982 {- at -} GMAIL {- dot -} COM
Date: 2007-04-21

Hi all

i m trying to solve a structure at 2.2A using MIR.
i obtained phases using solve. density modification n model building was
carried out using phenix. i m solving structure in p212121 space group, with
4 fold NCS. i got almost 80% model built using phenix, rest of the model was
built using coot.
Right now i am refining the structure at 2.2 Presently Rfree is 36.31% n
Rcrys is 35.77%.

Now whatever changes i made, Rfree continues to decrease while Rcryst is
more or less stable.

what could be the possible reasons for such a condition. it would be a great
help if i can get few tips to overcome this problem.

Thanx in advance
Vineet Gaur

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Next message:
Subject: truncate ref
From: Bernhard Rupp bernhardrupp {- at -} SBCGLOBAL {- dot -} NET
Date: 2007-04-23