Mt. Semertzidis et al., OMEGA - A 3-DIMENSIONAL DATA-BANK FOR PROTEIN STRUCTURES (A COMPLEMENT TO PDB), Computer applications in the biosciences, 9(6), 1993, pp. 667-670
OMEGA is a compilation of recent structural information on proteins de
rived from X-ray crystallography or NMR and published in journals refe
renced by Current Contents. To date, 401 entries have been included (3
34 X-ray, 28 MMR, 5 NMR + X-ray, 5 electron microscopy, 3 neutron scat
tering, 2 neutron diffraction, 1 electron microscopy + X-ray, 12 model
, 11 miscellaneous), with 5-10 new proteins being added each week. OME
GA can be accessed on Macintosh and is interrogated through 32 key wor
ds (space group, resolution, secondary structure, number of residues,
etc). This pool of proteins could be used for various purposes, includ
ing searches for proteins with a particular set of secondary structure
s. OMEGA will be continuously updated (every 6 months) and may later i
nclude all proteins already reported in the PDB, as well as structures
reported in journals with smaller readerships.