For example, to add preformatted nr protein database from NCBI to a wwwblast setup to make it available under blast.html, we will need to:
1. ftp all volumes of nr.##.tar.gz from ftp.ncbi.nlm.nih.gov/blast/db/
2. place the download archives under /db/ directory
3. exact the archive using tar zxvpf nr.##.tar.gz
4. since the multiple volumes are tied together through the nr.pal, we just need to add this alias, without its .pal extension, to blast.rc:
blastp test_aa_db nr
blastx test_aa_db nr
5. add this db to the blast.html and/or blast_cs.html page to make it visible through the pulldown menu:
<select name =" DATALIB">
<option VALUE =" nr"> nr
<option VALUE =" test_na_db"> test_na_db
<option VALUE =" test_aa_db"> test_aa_db
</select>
Note: A formatted BLAST database has mutiple files with the same name but different extensions. The database is called through the base database name without the file extension.