Rolf, three questions:

1) Can you run the same analysis, restricting your search to ATOM 
records? I'm guessing (hoping) that a lot of these are HETATM.

2) Is there a way to detect that a file is remediated? For example, in a 
remark?

3) Can I do this sort of search myself online?

Bob

Rolf Huehne wrote:

>Bob Hanson wrote:
>  
>
>>Angel, we need to know of any more renaming of backbone groups and what 
>>we would refer to as "key atoms" that tell us if something is a 
>>carbohydrate, for instance. So a list of all the old/new atom names 
>>would be wonderful. Maybe Rolf can help us find that.
>>
>>    
>>
>There are now (temporarily) 3 lists available at the JenaLib server
>containing atom name changes between pre-remediated and remediated PDB
>files in PDB format. The comparison is based on atom coordinates of the
>first model. (Identical coordinates in the old and new file  should
>represent the same atom.) Since there were also coordinate changes the
>results might not be absolutely complete.
>
>The first list contains all unique atom name changes that were detected
>(5475), sorted by "ATOM_NAME_OLD, ATOM_NAME_NEW".
>
>The second list provides the changes residue name specific (27443),
>sorted by "RES_NAME_OLD, ATOM_NAME_OLD,ATOM_NAME".
>In order to allow searching for new residue names the same atom name
>change is reported several times if the old residue name was changed
>into different new names. (This is for example the case for the modified
>nucleic acid residues. They were formerly just named e.g. "+A" but now
>got specific 3-letter names e.g. "A2M, EDA, A44 ...".)
>
>The third list contains the raw data with all atom name changes detected
>(9327946), sorted by "PDB_ID, RES_NAME_OLD, ATOM_NAME_OLD,
>ATOM_NUMBER_OLD, ATOM_NAME_NEW".
>This allows to find examples.
>
>In all lists the columns are separated with tabulators and the first
>line contains the column names (TSV/CSV format).
>
>Since the second and third list are quite large (436 KB, 383 MB) they
>are available as compressed "zip" archives (121 KB, 92 MB).
>
>1)
>http://www.fli-leibniz.de/ImgLibPDB/tmp/pdb_remediation-atom_name_changes-unique.txt
>
>2)
>http://www.fli-leibniz.de/ImgLibPDB/tmp/pdb_remediation-atom_name_changes-residue_specific.zip
>
>3)
>http://www.fli-leibniz.de/ImgLibPDB/tmp/pdb_remediation-atom_name_changes-full.zip
>
>
>Although the documentation at the remediation project site states that
>all atom names now start with the element symbol, there are still a lot
>of hydrogen atom names starting with a number).
>
>("Atoms names uniformly begin with their atom type symbol, including
>hydrogen atoms. Names beginning with numbers and unusual atom names have
>been changed accordingly.", cited from
>"http://www.wwpdb.org/documentation/remediation-impacts.pdf";)
>
>
>Regards,
>Rolf
>
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-- 
Robert M. Hanson
Professor of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr


If nature does not answer first what we want,
it is better to take what answer we get. 

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900



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