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© Oxford University Press

OMEGA: a three-dimensional databank for protein structures (a complement to PDB)

Michel T. Semertzidis , Sylvia Deplanque and Jean-Paul Mornon

Département des Macromolecules Biologiques, CNRS URA 09, Tour 16, 4 place Jussieu, CASE 115, F–75252 Paris Cedex 05, France
Laboratoire de Minéralogie- Cristallographie, CNRS URA 09, Tour 16, 4 place Jussieu, CASE 115, F–75252 Paris Cedex 05, France
Université Pierre et Marie Curie (Paris 6) et Denis Diderot (Paris 7), CNRS URA 09, Tour 16, 4 place Jussieu, CASE 115, F–75252 Paris Cedex 05, France

OMEGA is a compilation of recent structural information on proteins derived from X-ray crystallography or NMR and published in journals referenced by Current Contents. To date, 401 entries have been included (334 X-ray, 28 NMR, 5 NMR + X-ray, S electron microscopy, 3 neutron scattering, 2 neutron diffraction, 1 electron microscopy + X-ray, 12 model, 11 miscellaneous), with 5–10 new proteins being added each week. OMEGA can be accessed on Macintosh and is interrog ated through 32 key words (space group, resolution, secondary structure, number of residues, etc). This pool of proteins could be used for various purposes, including searches for proteins with a particular set of secondary structures. OMEGA will be continuously updated (every 6 months) and may later include all proteins already reported in the PDB, as well as structures reported in journals with smaller readerships.

Received on January 27, 1993; accepted on May 31, 1993

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