[ccp4bb] NCS-related: Parameter for map/structure quality?

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From: Chavas Leo ccp4hnaalas {- at -} GMAIL {- dot -} COM
Date: 2008-02-07

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Subject: NCS-related: Parameter for map/structure quality?
From: Jacob Keller j-keller2 {- at -} MD {- dot -} NORTHWESTERN {- dot -} EDU
Date: 2008-02-07

Dear Crystallographers,

The recent conversation about NCS got me thinking about something I have been wondering about for a while.

Imagine a structure with twenty-fold NCS which diffracts to 2A versus a no-NCS structure of the same resolution--obviously the first model will be better than the other, because there are about twenty times the number of reflections to describe the same underlying structure, all other things (e.g., solvent content) being equal. Is there a indication of this in the statistical measures usually reported in Tables I*, or anywhere else?

Regards,

Jacob Keller

(*there's the old "plural of Table I" problem)

*******************************************
Jacob Pearson Keller
Northwestern University
Medical Scientist Training Program
Dallos Laboratory
F. Searle 1-240
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email: j-keller2@northwestern.edu
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CCP4bb navigation

CCP4bb <-- 2008 <-- February 2008 <-- 07 February 2008

Previous message:
Subject: Re: Different chains in the dimer
From: Chavas Leo ccp4hnaalas {- at -} GMAIL {- dot -} COM
Date: 2008-02-07

Next message:
Subject: Re: an over refined structure
From: Dean Madden drm0001 {- at -} DARTMOUTH {- dot -} EDU
Date: 2008-02-07