1. EMBL Nucleotide Sequence Database, EMBL–European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom.
2. DNA Data Bank of Japan, CIB-DDBJ, National Institute of Genetics, Mishima, Shizuoka, Japan.
3. GenBank, National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland.