[1
]European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI),
Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
[2
]SIB Swiss Institute of Bioinformatics, Centre Medical Universitaire, 1 rue Michel
Servet, 1211 Geneva 4, Switzerland
[3
]Protein Information Resource, Georgetown University Medical Center, 3300 Whitehaven
Street NW, Suite 1200, WA 20007, USA
[4
]Protein Information Resource, University of Delaware, 15 Innovation Way, Suite 205,
Newark DE 19711, USA