Difference between revisions of "Blast"

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   blastall blastclust blastdb_aliastool blastdbcheck blastdbcmd blast_formatter blastn blastp blastpgp blastx             
 
   blastall blastclust blastdb_aliastool blastdbcheck blastdbcmd blast_formatter blastn blastp blastpgp blastx             
  
There are several ncbi databases installed on the HPC;
+
'''An example blast'''
 +
 
 +
  blastall -p blastn -d /ibers/ernie/scratch/databases/blast/nt -i myfile.fasta -o myfile.blast -m 8
  
  16SMicrobial env_nt nt refseq_protein refseq_rna nr
+
For some advice about running BLAST, take a look at [[[[Running BLAST optimally]]]]
  
These are automatically checked every two weeks and updated if the blast update script finds newer versions.
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'''NCBI Databases'''
  
 
The database directory is located;
 
The database directory is located;
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   /ibers/ernie/scratch/databases/blast
 
   /ibers/ernie/scratch/databases/blast
  
For more databases to be added, simply email the HPC Systems Administrator.
+
The following NCBI Databases are available;
 
 
'''An example blast'''
 
  
   blastall -p blastn -d /ibers/ernie/scratch/databases/blast/nt -i myfile.fasta -o myfile.blast -m 8
+
   16SMicrobial env_nt nt refseq_protein refseq_rna nr
  
For some advice about running BLAST, take a look at [[[[Running BLAST optimally]]]]
+
These are updated at midnight on the first day of the month. It is advisable NOT to be running a blast using these databases on at midnight on the first day of the month. It is possible that something odd things may happen if a database is updated while the job is running.

Revision as of 15:46, 30 October 2013

BLAST can be loaded using the following command;

 [user@ernie ]# module load BLAST/blast-2.2.26

This loads both blast-2.2.26 and ncbi-blast-2.2.26+, giving you access to commands such as;

 blastall blastclust blastdb_aliastool blastdbcheck blastdbcmd blast_formatter blastn blastp blastpgp blastx             

An example blast

 blastall -p blastn -d /ibers/ernie/scratch/databases/blast/nt -i myfile.fasta -o myfile.blast -m 8

For some advice about running BLAST, take a look at [[Running BLAST optimally]]

NCBI Databases

The database directory is located;

 /ibers/ernie/scratch/databases/blast

The following NCBI Databases are available;

 16SMicrobial env_nt nt refseq_protein refseq_rna nr

These are updated at midnight on the first day of the month. It is advisable NOT to be running a blast using these databases on at midnight on the first day of the month. It is possible that something odd things may happen if a database is updated while the job is running.