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Re: [ccp4bb] poll: cutoff for "high resolution" |
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CCP4bb navigationCCP4bb <-- 2008 <-- May 2008 <-- 15 May 2008Subject: Re: poll: cutoff for "high resolution" From: William Scott wgscott {- at -} CHEMISTRY {- dot -} UCSC {- dot -} EDU Date: 2008-05-15 nucleus, so if you want to resolve that as anything more than a bump, you will need a lot better than 1 Å (or neutrons). But in fairness the original question asked what you can call "high" resolution, not what you can call atomic resolution. I think anything better than ~3 Å should allow unambiguous definition of nucleotide and amino acid positions. On May 15, 2008, at 11:28 AM, Ed Pozharski wrote: > Of course. However, C=0 bond is ~1.2A, and bonds made by those pesky > hydrogens are ~1A. And I would think (it is semantics again) that to > reach atomic resolution you have to resolve all atoms, otherwise > > "All atoms are equal, but some (non-hydrogens) are more equal than > others." > > Cheers, > > Ed. > > On Thu, 2008-05-15 at 10:08 -0700, William Scott wrote: >> On May 15, 2008, at 10:01 AM, Ed Pozharski wrote: >> >>> 1.2A (not surprisingly since this is about the length of covalent >>> bond). >> >> A carbon-carbon single bond is about 1.55 Å. > -- > Edwin Pozharski, PhD, Assistant Professor > University of Maryland, Baltimore > ---------------------------------------------- > When the Way is forgotten duty and justice appear; > Then knowledge and wisdom are born along with hypocrisy. > When harmonious relationships dissolve then respect and devotion > arise; > When a nation falls to chaos then loyalty and patriotism are born. > ------------------------------ / Lao Tse / > > > CCP4bb navigationCCP4bb <-- 2008 <-- May 2008 <-- 15 May 2008 |
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