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
|