Mercurial > repos > xuebing > splicesite_max_entropy
diff splicesite/splicesitescore/score3.pl~ @ 4:cf2c4930dc9c
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author | xuebing |
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date | Sun, 01 Apr 2012 01:48:03 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/splicesite/splicesitescore/score3.pl~ Sun Apr 01 01:48:03 2012 -0400 @@ -0,0 +1,166 @@ +use strict; + + +my $inputfile = $ARGV[0]; +my $usemaxent = 1; + + +my @metables = &makemaxentscores; + +open (FILE,"<$inputfile") || die "can't open!\n"; + +while(<FILE>) { + chomp; + if (/^\s*$/) { #discard blank lines; + next; + } + elsif (/^>/) { #discard comment lines; + print $_."\t"; + next; + } + elsif (/[NQWERYUIOPLKJHFDSZXVBM]/) { + next; + } + else { + $_ =~ s/\cM//g; #gets rid of carriage return + my $str = $_; + print $str."\t"; + $str = uc($str); + if ($usemaxent) { + print sprintf("%.2f",&log2(&scoreconsensus($str)*&maxentscore(&getrest($str),\@metables)))."\n"; + } + } +} + +sub hashseq{ + #returns hash of sequence in base 4 + # &hashseq('CAGAAGT') returns 4619 + my $seq = shift; + $seq = uc($seq); + $seq =~ tr/ACGT/0123/; + my @seqa = split(//,$seq); + my $sum = 0; + my $len = length($seq); + my @four = (1,4,16,64,256,1024,4096,16384); + my $i=0; + while ($i<$len) { + $sum+= $seqa[$i] * $four[$len - $i -1] ; + $i++; + } + return $sum; +} + +sub makemaxentscores{ + my $dir = "/Users/xuebing/galaxy-dist/tools/mytools/splicesitescore/splicemodels/"; + my @list = ('me2x3acc1','me2x3acc2','me2x3acc3','me2x3acc4', + 'me2x3acc5','me2x3acc6','me2x3acc7','me2x3acc8','me2x3acc9'); + my @metables; + my $num = 0 ; + foreach my $file (@list) { + my $n = 0; + open (SCOREF,"<".$dir.$file) || die "Can't open $file!\n"; + while(<SCOREF>) { + chomp; + $_=~ s/\s//; + $metables[$num]{$n} = $_; + $n++; + } + close(SCOREF); + #print STDERR $file."\t".$num."\t".$n."\n"; + $num++; + } + return @metables; +} +sub makewmmscores{ + my $dir = "/bionet/geneyeo_essentials/MaxEntropy/webserver/splicemodels/"; + my @list = ('me1s0acc1','me1s0acc2','me1s0acc3','me1s0acc4', + 'me1s0acc5','me1s0acc6','me1s0acc7','me1s0acc8','me1s0acc9'); + my @metables; + my $num = 0 ; + foreach my $file (@list) { + my $n = 0; + open (SCOREF,"<".$dir.$file) || die "Can't open $file!\n"; + while(<SCOREF>) { + chomp; + $_=~ s/\s//; + $metables[$num]{$n} = $_; + $n++; + } + close(SCOREF); + #print STDERR $file."\t".$num."\t".$n."\n"; + $num++; + } + return @metables; +} +sub makemmscores{ + my $dir = "/bionet/geneyeo_essentials/MaxEntropy/webserver/splicemodels/"; + my @list = ('me2s0acc1','me2s0acc2','me2s0acc3','me2s0acc4', + 'me2s0acc5','me2s0acc6','me2s0acc7','me2s0acc8','me2s0acc9'); + my @metables; + my $num = 0 ; + foreach my $file (@list) { + my $n = 0; + open (SCOREF,"<".$dir.$file) || die "Can't open $file!\n"; + while(<SCOREF>) { + chomp; + $_=~ s/\s//; + $metables[$num]{$n} = $_; + $n++; + } + close(SCOREF); + #print STDERR $file."\t".$num."\t".$n."\n"; + $num++; + } + return @metables; +} +sub maxentscore{ + my $seq = shift; + my $table_ref = shift; + my @metables = @$table_ref; + my @sc; + $sc[0] = $metables[0]{&hashseq(substr($seq,0,7))}; + $sc[1] = $metables[1]{&hashseq(substr($seq,7,7))}; + $sc[2] = $metables[2]{&hashseq(substr($seq,14,7))}; + $sc[3] = $metables[3]{&hashseq(substr($seq,4,7))}; + $sc[4] = $metables[4]{&hashseq(substr($seq,11,7))}; + $sc[5] = $metables[5]{&hashseq(substr($seq,4,3))}; + $sc[6] = $metables[6]{&hashseq(substr($seq,7,4))}; + $sc[7] = $metables[7]{&hashseq(substr($seq,11,3))}; + $sc[8] = $metables[8]{&hashseq(substr($seq,14,4))}; + my $finalscore = $sc[0] * $sc[1] * $sc[2] * $sc[3] * $sc[4] / ($sc[5] * $sc[6] * $sc[7] * $sc[8]); + return $finalscore; +} + + + +sub getrest{ + my $seq = shift; + my $seq_noconsensus = substr($seq,0,18).substr($seq,20,3); + return $seq_noconsensus; +} + +sub scoreconsensus{ + my $seq = shift; + my @seqa = split(//,uc($seq)); + my %bgd; + $bgd{'A'} = 0.27; + $bgd{'C'} = 0.23; + $bgd{'G'} = 0.23; + $bgd{'T'} = 0.27; + my %cons1; + $cons1{'A'} = 0.9903; + $cons1{'C'} = 0.0032; + $cons1{'G'} = 0.0034; + $cons1{'T'} = 0.0030; + my %cons2; + $cons2{'A'} = 0.0027; + $cons2{'C'} = 0.0037; + $cons2{'G'} = 0.9905; + $cons2{'T'} = 0.0030; + my $addscore = $cons1{$seqa[18]} * $cons2{$seqa[19]}/ ($bgd{$seqa[18]} * $bgd{$seqa[19]}); + return $addscore; +} +sub log2{ + my ($val) = @_; + return log($val)/log(2); +}