SWISS-PROT protein sequence database
Release 2018_05, May 18
Swiss Institute of Bioinformatics; European Bioinformatics Institute
557,491 entries, 199,978,344 residues

TrEMBL protein sequence database
Release 2018_05, May 18
European Bioinformatics Institute; Swiss Institute of Bioinformatics
115,678,811 entries, 38,982,680,753 residues

Re-organized Protein Data Bank
Release 18-06-16, Jun 18
Kyoto University Bioinformatics Center
385,201 entries, 97,571,489 residues