In the first quarter of 2000, more than 500 structures were deposited to the PDB using the AutoDep Input Tool (ADIT) -- 208 in January, 137 in February, and 185 in March. Depositions came from all around the globe, including Asia, Australia, Europe, and North America.
61% of these structures were deposited with a HOLD UNTIL PUBLICATION status; 20% were deposited with a HOLD status, and 19% were deposited with an immediate release status.
While proteins were the predominant type of structure deposited, 38 nucleic acids and 26 protein-nucleic acid complexes were also submitted to the PDB. In addition to the more than 400 structures determined by X-ray crystallography, first quarter depositions included 83 NMR-determined structures, 10 theoretical models, and two EM structures.
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