Re: [ccp4bb] poll: cutoff for "high resolution"

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Subject: Re: poll: cutoff for "high resolution"
From: William Scott wgscott {- at -} CHEMISTRY {- dot -} UCSC {- dot -} EDU
Date: 2008-05-15

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Subject: Position available in High Throughput Crystallization
From: Steve Almo almo {- at -} MEDUSA {- dot -} BIOC {- dot -} AECOM {- dot -} YU {- dot -} EDU
Date: 2008-05-15

Subject: Re: poll: cutoff for "high resolution"
From: "Meyer, Peter" pameyer {- at -} MCW {- dot -} EDU
Date: 2008-05-15

Doesn't this just change the question to "what observation:parameter ratio is needed for my structure to be over-determined?"?
As near as I'm aware, the answer to that one seems to be "as many observations as you get".

Pete

-----Original Message-----
From: CCP4 bulletin board on behalf of proclus@GNU-DARWIN.ORG
Sent: Thu 5/15/2008 11:11 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] poll: cutoff for "high resolution"

On 14 May, Mark Del Campo wrote:
> At what refinement resolution or resolution ranges would you call a structure "high resolution" vs.
> "low resolution"? I realize that this may boil down to semantics (e.g. some may classify structures as
> "medium resolution"), but I wanted to get an opinion from the pros.

A sensible definition of high resolution would be that resolution at
which the structure is computationally over-determined, which is about
2 angstroms or better for a complete data set. This would also be a
sensible definition for what is called atomic resolution, because the
atoms are resolved as spheres or better, so that the position is
over-determined.

Regards,

--
Michael L. Love Ph.D
Department of Biophysics and Biophysical Chemistry
School of Medicine
Johns Hopkins University
725 N. Wolfe Street
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Baltimore MD 21205-2185

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CCP4bb <-- 2008 <-- May 2008 <-- 15 May 2008

Previous message:
Subject: Re: poll: cutoff for "high resolution"
From: William Scott wgscott {- at -} CHEMISTRY {- dot -} UCSC {- dot -} EDU
Date: 2008-05-15

Next message:
Subject: Position available in High Throughput Crystallization
From: Steve Almo almo {- at -} MEDUSA {- dot -} BIOC {- dot -} AECOM {- dot -} YU {- dot -} EDU
Date: 2008-05-15