root/galaxy-central/tool-data/blastdb.loc.sample

#This is a sample file distributed with Galaxy that is used to define a
#list of nucelotide BLAST databases, using two columns tab separated:
#
#<database caption>     <path to base name>
#
#The captions typically contain spaces and might end with the build date.
#It is important that the actual database name does not have a space in it,
#and that the first tab that appears in the line is right before the path.
#
#So, for example, if your database is nt and the path to your base name 
#is /depot/data2/galaxy/blastdb/nt/nt.chunk, then the blastdb.loc entry 
#would look like this:
#
#nt 02 Dec 2009      /depot/data2/galaxy/blastdb/nt/nt.chunk
#
#and your /depot/data2/galaxy/blastdb/nt directory would contain all of 
#your "base names" (e.g.):
#
#-rw-r--r--  1 wychung galaxy  23437408 2008-04-09 11:26 nt.chunk.00.nhr
#-rw-r--r--  1 wychung galaxy   3689920 2008-04-09 11:26 nt.chunk.00.nin
#-rw-r--r--  1 wychung galaxy 251215198 2008-04-09 11:26 nt.chunk.00.nsq
#...etc...
#
#Your blastdb.loc file should include an entry per line for each "base name" 
#you have stored.  For example:
#
#nt 02 Dec 2009 /depot/data2/galaxy/blastdb/nt/nt.chunk
#wgs 30 Nov 2009        /depot/data2/galaxy/blastdb/wgs/wgs.chunk
#test 20 Sep 2008       /depot/data2/galaxy/blastdb/test/test
#...etc...
#
#See also blastdb_p.loc which is for any protein BLAST database.