TABLE 1.
Databases used for computational search
| Database | Source | URL | Upload date |
| Viruses | DNA Data Bank of Japan | http://www.ddbj.nig.ac.jp/ | September 2003 |
| Drosophila melanogaster | Berkeley Drosophila Genome Project | http://www.fruitfly.org/ | January 2003 |
| Caenorhabditis elegans | WormBase | http://www.wormbase.org/ | December 2002 |
| Arabidopsis thaliana | The Arabidopsis Information Resource | http://www.arabidopsis.org/info/agi.jsp | March 2003 |
| Homo sapiens | Human Genome Resources | http://www.ncbi.nlm.nih.gov/genome/guide/human/ | April 2003 |
| Full-length human cDNA sequencing project | http://cdna.ims.u-tokyo.ac.jp/ | April 2000 | |
| Mus musculus | Mouse Genome Resources | http://www.ncbi.nlm.nih.gov/genome/guide/mouse/ | February 2003 |
| Functional Annotation of Mouse | http://www.gsc.riken.go.jp/e/FANTOM/ | December 2002 | |
| Oryza sativa | Knowledge-based Oryza Molecular biological Encyclopedia | http://cdna01.dna.affrc.go.jp/cDNA | July 2003 |
| Saccharomyces cerevisiae | Comprehensive Yeast Genome Database | http://mips.gsf.de/genre/proj/yeast/index.jsp | February 2002 |
| 5′ UTR | UTR Database | http://bighost.area.ba.cnr.it/BIG/UTRHome/ | February 2003 |