Difference between revisions of "Sequence-based mutation analysis TSD Journal"

From Bioinformatikpedia
(SNAP)
(SNAP)
Line 35: Line 35:
 
snap2 -i P06865.fasta -o snap.out -m all --tolerate
 
snap2 -i P06865.fasta -o snap.out -m all --tolerate
 
or respectively
 
or respectively
snapfun -i P06865.fasta -o snap.out -m muts.txt
+
snapfun -i P06865.fasta -o snap.out -m [https://gist.github.com/2944236 mutation file]
   
   

Revision as of 21:54, 18 June 2012

Back to results.

To improve on the readability of the journal, only the basic steps and program calls are outlined here, while the full source code of self-written scripts is linked to like this.

Substitution matrices

Quantiles can be easily calculated in R, using <source lang="bash"> quantile(m) #Where m is a matrix </source>

To create the PSSM, PSI-Blast was called as follows, using the parameters from Task 2, if not already given by the Task description (number of iterations): <source lang="bash"> wget http://www.uniprot.org/uniprot/P06865.fasta PAT=`pwd` blastpgp -m 8 -Q $PAT/blastpgp_pssm -d /mnt/project/pracstrucfunc12/data/big/big -i $PAT/P06865.fasta -v 3800 -b 3800 -j 5 > $PAT/lastpgp.out </source>

MSA

Structural visualisation

Pymol, see Mutagenesis.

Prediction

PolyPhen2

PolyPhen 2 predictions were done using the webserver's batch mode. All settings were left at default values. Here are batch file and query sequence.

SIFT

SIFT predictions were performed using the webserver at default values (database: UniRef90 2011 Apr). Here is the input mutation file.

SNAP

snap2 -i P06865.fasta -o snap.out -m all --tolerate

or respectively

snapfun -i P06865.fasta -o snap.out -m mutation file


egrep "(M1|L39|C58|L127|R170|R178|S210|D258|L451|E482)[A-Z]+" snap.out > filteredsnap.out
egrep "M1V|L39R|C58Y|L127R|R170W|R178H|S210F|D258H|L451V|E482K" snap.out > onlyRealSNPsnap.out