According to "Nicholas keep" <[email protected]>: > Does anyone have a good estimate of the proportion of molecular > replacement structures in the PDB?
This is what OCA has: From un total of 64,623 PDB structure files, 30,784 have 'MOLECULAR REPLACEMENT' as Method for Structure Determination. However, you must remember that we have a large number of false negatives Several reasons: - Only 47,557 structure files from the total of 64,623 report which method was used for structure determination. For example, 1CRY whose title reports using the MR method does not include the info in the proper REMARK. - Users are allowed to write almost anything as the METHOD USED TO DETERMINE THE STRUCTURE, making it difficult an accurate report. OCA found PDB italian speaking structure files reporting 'MOLECULARE REPLACEMENT' ... This and other problems are being reported to RCSB. OCA makes public some of its internal statistics on PDB, like http://oca.weizmann.ac.il/oca-docs/PDBSizeDistribution.html, http://bip.weizmann.ac.il/oca-bin/pdbRecNames and http://proteopedia.org/wiki/index.php/Believe_It_or_Not Regards, Jaim -- Dr Jaime Prilusky | [email protected] Head Bioinformatics | R&D Bioinformatics and Data Management | Department of Biological Services | Weizmann Institute of Science | fax: 972-8-9344113 76100 Rehovot - Israel | tel: 972-8-9344959 OCA, http://oca.weizmann.ac.il (the protein structure/function database) Proteopedia, http://proteopedia.org (because life has more than 2D) ------------------------------------------------------------------------
