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glam2-purge(1) [debian man page]

GLAM2-PURGE(1)							   glam2 Manual 						    GLAM2-PURGE(1)

NAME

       glam2-purge - Removes redundant sequences from a FASTA file

SYNOPSIS

       glam2-purge file score [options]

DESCRIPTION

       glam2-purge is a modified version of Andrew Neuwald's purge program that removes redundant sequences from a FASTA file. This is recommended
       in order to prevent highly similar sequences distorting the search for motifs. Purge works with either DNA or protein sequences and creates
       an output file such that no two sequences have a (gapless) local alignment score greater than a threshold specified by the user. The output
       file is named <file>.<score>. The alignment score is based on the BLOSUM62 matrix for proteins, and on a +5/-1 scoring scheme for DNA.
       Purge can also be used to mask tandem repeats. It uses the XNU program for this purpose.

OPTIONS

       -n
	   Sequences are DNA (default: protein).

       -b
	   Use blast heuristic method (default for protein).

       -e
	   Use an exhaustive method (default for DNA).

       -q
	   Keep first sequence in the set.

       -x
	   Use xnu to mask protein tandem repeats.

SEE ALSO

       glam2(1), glam2format(1), glam2mask(1), glam2scan(1), xnu(1)

       The full Hypertext documentation of GLAM2 is available online at http://bioinformatics.org.au/glam2/ or on this computer in
       /usr/share/doc/glam2/.

REFERENCES

       Purge was written by Andy Neuwald and is described in more detail in Neuwald et al., "Gibbs motif sampling: detection of bacterial outer
       membrane protein repeats", Protein Science, 4:1618-1632, 1995. Please cite it if you use Purge.

       If you use GLAM2, please cite: MC Frith, NFW Saunders, B Kobe, TL Bailey (2008) Discovering sequence motifs with arbitrary insertions and
       deletions, PLoS Computational Biology (in press).

AUTHORS

       Andrew Neuwald
	   Author of purge, renamed glam2-purge in Debian.

       Martin Frith
	   Modified purge to be ANSI standard C and improved the user interface.

       Timothy Bailey
	   Modified purge to be ANSI standard C and improved the user interface.

       Charles Plessy <plessy@debian.org>
	   Formatted this manpage in DocBook XML for the Debian distribution.

COPYRIGHT

       The source code and the documentation of Purge and GLAM2 are released in the public domain.

GLAM2 1056							    05/19/2008							    GLAM2-PURGE(1)

Check Out this Related Man Page

BLASTCLUST(1)						     NCBI Tools User's Manual						     BLASTCLUST(1)

NAME

       blastclust - BLAST score-based single-linkage clustering

SYNOPSIS

       blastclust  [-] [-C] [-L X] [-S X] [-W N] [-a N] [-b F] [-c filename] [-d filename] [-e F] [-i filename] [-l filename] [-o filename] [-p F]
       [-r filename] [-s filename] [-v [filename]]

DESCRIPTION

       blastclust automatically and systematically clusters protein or DNA sequences based on pairwise matches found using the BLAST algorithm	in
       case of proteins or Mega BLAST algorithm for DNA. In the latter case a single Mega BLAST search is performed for all the sequences combined
       against a database created from the same sequences. blastclust finds pairs of sequences that have  statistically  significant  matches  and
       clusters them using single-linkage clustering.

OPTIONS

       A summary of options is included below.

       -      Print usage message

       -C     Complete unfinished clustering

       -L X   Length coverage threshold (default = 0.9)

       -S X   Score coverage threshold (bit score / length if < 3.0, percentage of identities otherwise; default = 1.75)

       -W N   Use words of size N (length of best perfect match; zero invokes default behavior: 3 for proteins, 32 for nucleotides)

       -a N   Number of CPU's to use (default = 1)

       -b F   Do not require coverage on both neighbours

       -c filename
	      Read advanced options from configuration file filename

       -d filename
	      Input as a database

       -e F   Disable id parsing in database formatting

       -i filename
	      FASTA input file (program will format the database and remove files in the end; default = stdin)

       -l filename
	      Restrict reclustering to id list in filename

       -o filename
	      Output file for list of clusters (default = stdout)

       -p F   Input is nucleotides, not proteins.

       -r filename
	      Restore neighbors for reclustering from filename

       -s filename
	      Save all neighbours to filename

       -v [filename]
	      Print verbose progress messages (to filename)

AUTHOR

       The National Center for Biotechnology Information.

SEE ALSO

       blast(1), formatdb(1), /usr/share/doc/blast2/blastclust.html, <http://www.ncbi.nlm.nih.gov/BLAST/>

NCBI
								    2004-06-25							     BLASTCLUST(1)
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