PDB CD-ROM Issue 99 Released

The latest PDB CD-ROM (release #99) set is currently being distributed. This release contains the macromolecular structure entries for the 16,972 structures available as of January 1, 2002. The CD-ROMs are produced quarterly as of the last update of the PDB Web site for March, June, September and December. The experimental data (X-ray structure factors and NMR constraints) are also included, if available. Further information is available at http://www.rcsb.org/pdb/cdrom.html.