use strict; use warnings; my $amino_acid=''; my $s1 = 'ATGCCCGTAC'; ## Sequence 1 my $s2 = 'GCTTCCCAGCGC'; ## Sequence 2 print "Sequence 1 Translation:"; OneFrameTranslation ($s1); ## Calls subroutine print "$amino_acid\n"; print "Sequence 2 Translation:"; OneFrameTranslation ($s2); ## Calls subroutine print "$amino_acid\n"; ### Subroutine ### sub OneFrameTranslation { my ($seq) = shift; my $amino_acid=''; my $seqarray=''; my %genetic_code = ( 'TTT' => 'F', 'TTC' => 'F', 'TTA' => 'L', 'TTG' => 'L', 'CTT' => 'L', 'CTC' => 'L', 'CTA' => 'L', 'CTG' => 'L', 'ATT' => 'I', 'ATC' => 'I', 'ATA' => 'I', 'ATG' => 'M', 'GTT' => 'V', 'GTC' => 'V', 'GTA' => 'V', 'GTG' => 'V', 'TCT' => 'S', 'TCC' => 'S', 'TCA' => 'S', 'TCG' => 'S', 'CCT' => 'P', 'CCC' => 'P', 'CCA' => 'P', 'CCG' => 'P', 'ACT' => 'T', 'ACC' => 'T', 'ACA' => 'T', 'ACG' => 'T', 'GCT' => 'A', 'GCC' => 'A', 'GCA' => 'A', 'GCG' => 'A', 'TAT' => 'Y', 'TAC' => 'Y', 'TAA' => '*', 'TAG' => '*', 'CAT' => 'H', 'CAC' => 'H', 'CAA' => 'Q', 'CAG' => 'Q', 'AAT' => 'N', 'AAC' => 'N', 'AAA' => 'K', 'AAG' => 'K', 'GAT' => 'D', 'GAC' => 'D', 'GAA' => 'E', 'GAG' => 'E', 'TGT' => 'C', 'TGC' => 'C', 'TGA' => '*', 'TGG' => 'W', 'CGT' => 'R', 'CGC' => 'R', 'CGA' => 'R', 'CGG' => 'R', 'AGT' => 'S', 'AGC' => 'S', 'AGA' => 'R', 'AGG' => 'R', 'GGT' => 'G', 'GGC' => 'G', 'GGA' => 'G', 'GGG' => 'G' ); ## '---' = 3 character codon in hash above ## '-' = one letter amino acid abbreviation in hash above my @seqarray = split(//,$seq); ## Explodes the string for (my $i=0; $i<=$#seqarray-2; $i=$i+3) { my $codon = substr($seqarray,$i,3); $amino_acid = $genetic_code{$codon}; } return ($amino_acid); }