I was comparing the two most recent versions of PDB entry 1c75 today, namely version 3 and 4.
REVDAT 4 24-FEB-09 1C75 1 VERSN REVDAT 3 01-APR-03 1C75 1 JRNL REVDAT 2 14-FEB-01 1C75 1 JRNL REMARK REVDAT 1 22-MAR-00 1C75 0 I was puzzled to find that there are changes in the file that is not only the curation of data, error-fixing, etc, but also changes in the data itself. For example, residue GLU A24, atom N is partially occupied in sites A and B. In version 3 of the entry, those two atom positions have occupancies 0.63 and 0.37, respectively. In version 4 of the file, both occupancies have been changed to 0.5. Although I have not checked extensively, it seems as if all atoms with split positions have been assigned occupancy 0.5. How is that possible? Cheers, Morten -- Morten Kjeldgaard, asc. professor, MSc, PhD BiRC - Bioinformatics Research Center, Aarhus University C.F. Møllers Alle, Building 1110, DK-8000 Aarhus C, Denmark. Lab +45 8942 3130 * Fax +45 8942 3077 * Home +45 8618 8180
