From 29407cf146e2484d7663f6448943c7294f7a477e Mon Sep 17 00:00:00 2001
From: Bryan White <bpcwhite@gmail.com>
Date: Tue, 30 Dec 2014 17:13:50 -0800
Subject: [PATCH] added protein conversion script

---
 src/seq_convert_protein.pl | 223 +++++++++++++++++++++++++++++++++++++
 1 file changed, 223 insertions(+)
 create mode 100755 src/seq_convert_protein.pl

diff --git a/src/seq_convert_protein.pl b/src/seq_convert_protein.pl
new file mode 100755
index 0000000..7f9e89e
--- /dev/null
+++ b/src/seq_convert_protein.pl
@@ -0,0 +1,223 @@
+#!/usr/bin/env perl
+# This script converts DNA sequences to Amino Acid sequences.
+
+# Copyright (c) 2013, 2014 Bryan White, bpcwhite@gmail.com
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+use FindBin;
+use lib "$FindBin::Bin/libs/Sequence"; 
+use lib "$FindBin::Bin/libs/";
+
+# Import sequence libs
+use Sequence::Fasta;
+use Sequence::Kimura_Distance;
+use General::Arguments;
+use Sequence::Bootstrap;
+use Sequence::Garli;
+
+# BioPerl libs
+use Bio::Align::AlignI;
+use Bio::AlignIO::fasta;
+use Bio::SimpleAlign;
+use Bio::Seq;
+use Bio::SeqIO;
+use Bio::SeqIO::fasta;
+
+# Non-bio modules
+use Statistics::Descriptive;
+use Benchmark qw(:all);
+use POSIX qw(ceil);
+use Math::Random::MT::Perl qw(srand rand irand);
+use Data::Dumper;
+use Storable qw(dclone);
+use File::Copy;
+
+# Non-bio modules
+use Benchmark qw(:all);
+use Getopt::Long;
+use String::Random;
+
+my $query_aln_file 	= '';
+
+GetOptions ("aln=s" 			=> \$query_aln_file,)
+or die("Error in command line arguments\n");
+
+##################################################################
+# Import alignment
+print "Importing alignment file ".$query_aln_file."...\n";
+my $query_aln = Bio::AlignIO->new(-format => 'fasta',
+								-file   => $query_aln_file );
+my $query_aln_obj = $query_aln->next_aln;
+##################################################################
+
+my @query_sequence_array = ();
+foreach my $seq ($query_aln_obj->each_seq) {
+	push(@query_sequence_array,$seq);
+}
+
+my $outp = '_AA.fas';
+
+open (OUTP, '>'.$outp);
+print "Translating proteins...\n\n";
+foreach my $query_seq (@query_sequence_array) {
+	
+	my $seq_id = $query_seq->id;
+	my $seq_string = $query_seq->seq;
+	
+	print $seq_string."\n\n";
+
+	my $rev_complement = reverse_complement($seq_string);
+	#print $rev_complement."\n\n";
+
+	my $orf1 = translate_protein($seq_string,1);
+	print $orf1."\n";
+
+	my $orf4 = translate_protein($rev_complement,1);
+	print $orf4."\n";
+
+	#exit;
+
+	# open (QUERY, '>'.$temp_query);
+	# foreach my $match_seq (@match_aln_array) {
+	# 	print QUERY '>Match|'.$match_seq->id."\n";
+	# 	print QUERY $match_seq->seq."\n";
+	# }
+	# print QUERY ">".$seq_id."\n";
+	# print QUERY $seq_string."\n";
+	# close (QUERY);
+	
+	
+}
+print "Done!\n";
+
+close(OUTP);
+
+sub translate_protein {
+
+	my $seq 	= shift;
+	my $orfnum 	= shift;
+
+	if ($orfnum > 6 || $orfnum < 1) {
+		die("Invalid reading frame");
+	}
+
+	my %codons = (
+		TTT => 'F',
+		TTC => 'F',
+		TTA => 'L',
+		TTG => 'L',
+		CTT => 'L',
+		CTC => 'L',
+		CTA => 'L',
+		CTG => 'L',
+		ATT => 'I',
+		ATC => 'I',
+		ATA => 'I',
+		ATG => 'M',
+		GTT => 'V',
+		GTC => 'V',
+		GTA => 'V',
+		GTG => 'V',
+		TCT => 'S',
+		TCC => 'S',
+		TCA => 'S',
+		TCG => 'S',
+		CCT => 'P',
+		CCC => 'P',
+		CCA => 'P',
+		CCG => 'P',
+		ACT => 'T',
+		ACC => 'T',
+		ACA => 'T',
+		ACG => 'T',
+		GCT => 'A',
+		GCC => 'A',
+		GCA => 'A',
+		GCG => 'A',
+		TAT => 'Y',
+		TAC => 'Y',
+		TAA => '*',
+		TAG => '*',
+		CAT => 'H',
+		CAC => 'H',
+		CAA => 'Q',
+		CAG => 'Q',
+		AAT => 'N',
+		AAC => 'N',
+		AAA => 'K',
+		AAG => 'K',
+		GAT => 'D',
+		GAC => 'D',
+		GAA => 'E',
+		GAG => 'E',
+		TGT => 'C',
+		TGC => 'C',
+		TGA => '*',
+		TGG => 'W',
+		CGT => 'R',
+		CGC => 'R',
+		CGA => 'R',
+		CGG => 'R',
+		AGT => 'S',
+		AGC => 'S',
+		AGA => 'R',
+		AGG => 'R',
+		GGT => 'G',
+		GGC => 'G',
+		GGA => 'G',
+		GGG => 'G'
+	);
+
+	my $length = length($seq);
+	my $amino_acid_seq = '';
+	for (my $i = $orfnum-1; $i < $length; $i+=3) {
+		
+		#print substr $seq, $i, $codon_end;
+		my $codon = substr $seq, $i, 3;
+		#print $codon."\n";
+		#exit;
+		my $amino_acid = $codons{$codon} or "\?";
+		#print $amino_acid;
+
+		$amino_acid_seq .= $amino_acid;
+	}
+
+	return $amino_acid_seq;
+}
+
+sub reverse_complement {
+	my $seq = shift;
+
+	%complementary_bases = (
+		A => 'T',
+		T => 'A',
+		G => 'C',
+		C => 'G'
+	);
+
+	my $reverse = reverse $seq;
+	my $length = length($reverse);
+	#print $reverse."\n";
+
+	my @rev_split = split(//,$reverse);
+	#print $rev_split[0]."\n";
+
+	my $rev_complement = '';
+	for (my $i = 0; $i < $length; $i++) {
+		my $base = $rev_split[$i];
+		$rev_complement .= $complementary_bases{$base};
+	}
+
+	return $rev_complement;
+}
\ No newline at end of file