1. GenBank;Benson;Nucleic Acids Res.,2007
2. The Swiss-Prot Protein Knowledgebase and its supplement TrEMBL in 2003;Boeckmann;Nucleic Acids Res.,2003
3. The Protein Data Bank;Berman;Nucleic Acids Res.,2000
4. MMDB: Entrez's 3D-structure database;Chen;Nucleic Acids Res.,2003
5. OEChem, version 1.5.1, OpenEye Scientific Software, Inc., Santa Fe, NM, USA, http://www.eyesopen.com, 2007