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Arrays Perl：跨数组元素搜索模式

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Arrays Perl：跨数组元素搜索模式,arrays,perl,bioinformatics,Arrays,Perl,Bioinformatics,我是一个Perl新手，遇到了另一个需要帮助和输入的生物信息学问题 问题简介： 我有一个文件，有超过40000个独特的DNA序列。我所说的唯一，是指唯一的序列id。我在我的帖子末尾附上了它的一部分，以帮助你展示它的样子 我需要将40000个序列分为3部分。因此，如果一个特定序列的长度为999个字符，那么这3个部分中的每个部分都有333个字符 我需要通过3个单独的部分中的每个部分寻找以下模式： $gpat=[G]{3,5}； $npat=[A-Z]{1,25} $pattern=$gpat.$n

我是一个Perl新手，遇到了另一个需要帮助和输入的生物信息学问题

问题简介：

  • 我有一个文件，有超过40000个独特的DNA序列。我所说的唯一，是指唯一的序列id。我在我的帖子末尾附上了它的一部分，以帮助你展示它的样子

  • 我需要将40000个序列分为3部分。因此，如果一个特定序列的长度为999个字符，那么这3个部分中的每个部分都有333个字符

  • 我需要通过3个单独的部分中的每个部分寻找以下模式：

    $gpat=[G]{3,5}； $npat=[A-Z]{1,25}
    $pattern=$gpat.$npat.$gpat.$npat.$gpat.$npat.$npat.$gpat

  • 如果$pattern出现在3个部分的第一部分，则增加“开始”的计数器；如果$pattern出现在3个部分的第二部分，则增加“中间”的计数器；最后，如果$pattern出现在第三部分，则增加“结束”的计数器

  • 打印“开始”、“中间”和“结束”的计数器，即每个序列的“开始”、“中间”和“结束”的总和

    假设在第一个序列中，值分别为'2'，'5'，'3'，在第二个序列中，值为'4'，'1'，'6'，最终计数应为'7,6,9'

    • 我遇到的问题：

  • 如果一个特定的序列被分成3部分，潜在的$pattern就会丢失。例如，按如下顺序说：
    • GGGATGTGATGCATGGGGATGCATCGATGCGGGGACTAGTCAGCGGGATGCTACGATGGATGATTAATATCCGGCGCATATAGATGCTATCATATATATATAGCGGCGCATATAGATGCTATCATATATATATATATATATATAGTATCTATTA

    拆分为3个部分将生成以下3个子部分，每个子部分的长度为35个字符：

    gggatgtcgatgcatggggatgcatcgatgcgggg
    ACTAGCTAGCGGGATGCTACGATGGATGAT
    AATATCGCGCATATATGCTAGTCTATATATA

    因此，$pattern被分为前两部分。有并没有说“若$pattern在第一部分开始，在第二部分结束”，增加“开始”的计数

    ######由于Cupidvogel建议的代码，以下问题已得到解决

    2.如果一个序列的长度不能被3整除，我如何将它分成3部分？我尝试使用
    int
    ，但最后一部分是1-2 字符短

    #Take Filename from user
print "Please enter file name : ";
$in =<>;
chomp $in;
        
        
open (FASTA,"$in") or die ;
while (<FASTA>)
{
$/=">";
@array = split '\n', $_;
$header=shift @array; # Header of the fasta sequence
print "\n\nNext sequence: \n";
print $header,"\n";
            
            
$seq= join '', @array; # sequence
$seq=~s/\s//g;
$seq=~s/\*//g;
$seq=~s/>//g;
print $seq,"\n\n";

$num = int(length($seq)/3);
@arr = unpack("A$num A$num A*",$seq);
print " New method gives this :", @arr;
print "\nThe first element is :", $arr[0]; 
print "\nThe second element is :",$arr[1]; 
print "\nThe third element is :",$arr[2] ;

            
            
#The following lines of code were originally written to split...
#...the sequence into 3 parts, albeit unsuccessfully                    
#my $split = (length $seq)/3;
#print $split,"\n\n";
         
#my $int = int $split;
#print $int,"\n\n";
         
         
#my @array2 = $seq =~ /(.{$int})/g;
#print join (" ", @array2),"\n\n";
        
#print $array2[0],"\n",$array2[1],"\n",$array2[2];
        
            
}
        
        
exit;
    以下是到目前为止我编写的代码

    它读入文件，显示标题名和序列，每个序列将被分割的长度，最后将序列分割为3个部分，如果序列长度可以被3整除，则效果很好，对于那些不能被3整除的序列，最后的第3部分短1-2个字符

    #Take Filename from user
print "Please enter file name : ";
$in =<>;
chomp $in;
        
        
open (FASTA,"$in") or die ;
while (<FASTA>)
{
$/=">";
@array = split '\n', $_;
$header=shift @array; # Header of the fasta sequence
print "\n\nNext sequence: \n";
print $header,"\n";
            
            
$seq= join '', @array; # sequence
$seq=~s/\s//g;
$seq=~s/\*//g;
$seq=~s/>//g;
print $seq,"\n\n";

$num = int(length($seq)/3);
@arr = unpack("A$num A$num A*",$seq);
print " New method gives this :", @arr;
print "\nThe first element is :", $arr[0]; 
print "\nThe second element is :",$arr[1]; 
print "\nThe third element is :",$arr[2] ;

            
            
#The following lines of code were originally written to split...
#...the sequence into 3 parts, albeit unsuccessfully                    
#my $split = (length $seq)/3;
#print $split,"\n\n";
         
#my $int = int $split;
#print $int,"\n\n";
         
         
#my @array2 = $seq =~ /(.{$int})/g;
#print join (" ", @array2),"\n\n";
        
#print $array2[0],"\n",$array2[1],"\n",$array2[2];
        
            
}
        
        
exit;
    实际输入文件如下所示：

    >NR_037701 1
aggagctatgaatattaatgaaagtggtcctgatgcatgcatattaaaca
tgcatcttacatatgacacatgttcaccttggggtggagacttaatattt
aaatattgcaatcaggccctatacatcaaaaggtctattcaggacatgaa
ggcactcaagtatgcaatctctgtaaacccgctagaaccagtcatggtcg
gtgggctccttaccaggagaaaattaccgaaatcactcttgtccaatcaa
agctgtagttatggctggtggagttcagttagtcagcatctggtggagct
gcaagtgttttagtattgtttatttagaggccagtgcttatttagctgct
agagaaaaggaaaacttgtggcagttagaacatagtttattcttttaagt
gtagggctgcatgacttaacccttgtttggcatggccttaggtcctgttt
gtaatttggtatcttgttgccacaaagagtgtgtttggtcagtcttatga
cctctattttgacattaatgctggttggttgtgtctaaaccataaaaggg
aggggagtataatgaggtgtgtctgacctcttgtcctgtcatggctggga
actcagtttctaaggtttttctggggtcctctttgccaagagcgtttcta
ttcagttggtggaggggacttaggattttatttttagtttgcagccaggg
tcagtacatttcagtcacccccgcccagccctcctgatcctcctgtcatt
cctcacatcctgtcattgtcagagattttacagatatagagctgaatcat
ttcctgccatctcttttaacacacaggcctcccagatctttctaacccag
gacctacttggaaaggcatgctgggtctcttccacagactttaagctctc
cctacaccagaatttaggtgagtgctttgaggacatgaagctattcctcc
caccaccagtagccttgggctggcccacgccaactgtggagctggagcgg
gagggaggagtacagacatggaattttaattctgtaatccagggcttcag
ttatgtacaacatccatgccatttgatgattccaccactccttttccatc
tcccagaagcctgctttttaatgcccgcttaatattatcagagccgagcc
tggaatcaaactgcctctttcaaaacctgccactatatcctggctttgtg
acctcagccaagttgcttgactattctcagtctcagtttctgcacctgtc
aaatagggtttatgttaacctaactttcagggctgtcaggattaaatgag
catgaaccacataaaatgtttggtgtatagtaagtgtacagtaaatactt
ccattatcagtccctgcaattctatttttcttccttctctacacagcccc
tgtctggctttaaaatgtcctgccctgctttttatgagtggataccccca
gccctatgtggattagcaagttaagtaatgacactcagagacagttccat
ctttgtccataacttgctctgtgatccagtgtgcatcactcaaacagact
atctcttttctcctacaaaacagacagctgcctctcagataatgttgggg
gcataggaggaatgggaagcccgctaagagaacagaagtcaaaaacagtt
gggttctagatgggaggaggtgtgcgtgcacatgtatgtttgtgtttcag
gtcttggaatctcagcaggtcagtcacattgcagtgtgtcgcttcacctg
gctccctcttttaaagattttccttccctctttccaactccctgggtcct
ggatcctccaacagtgtcagggttagatgccttttatgggccacttgcat
tagtgtcctgatagaggcttaatcactgctcagaaactgccttctgccca
ctggcaaagggaggcaggggaaatacatgattctaattaatggtccaggc
agagaggacactcagaatttcaggactgaagagtatacatgtgtgtgatg
gtaaatgggcaaaaatcatcccttggcttctcatgcataatgcatgggca
cacagactcaaaccctctctcacacacatacacatatacattgttattcc
acacacaaggcataatcccagtgtccagtgcacatgcatacacgcacaca
ttcccttcctaggccactgtattgctttcctagggcatcttcttataaga
caccagtcgtataaggagcccaccccactcatctgagcttatcaaccaat
tacattaggaaagactgtatttcctagtaaggtcacattcagtagtactg
agggttgggacttcaacacagctttttgggggatcataattcaacccatg
acagccactgagattattatatctccagagaataaatgtgtggagttaaa
aggaagatacatgtggtacaaggggtggtaaggcaagggtaaaaggggag
ggaggggattgaactagacacagacacatgagcaggactttggggagtgt
gttttatatctgtcagatgcctagaacagcacctgaaatatgggactcaa
tcattttagtccccttctttctataagtgtgtgtgtgcggatatgtgtgc
tagatgttcttgctgtgttaggaggtgataaacatttgtccatgttatat
aggtggaaagggtcagactactaaattgtgaagacatcatctgtctgcat
ttattgagaatgtgaatatgaaacaagctgcaagtattctataaatgttc
actgttattagatattgtatgtctttgtgtccttttattcatgaattctt
gcacattatgaagaaagagtccatgtggtcagtgtcttacccggtgtagg
gtaaatgcacctgatagcaataacttaagcacacctttataatgacccta
tatggcagatgctcctgaatgtgtgtttcgagctagaaaatccgggagtg
gccaatcggagattcgtttcttatctataatagacatctgagcccctggc
ccatcccatgaaacccaggctgtagagaggattgaggccttaagttttgg
gttaaatgacagttgccaggtgtcgctcattagggaaaggggttaagtga
aaatgctgtataaactgcatgatgtttgcaggcagttgtggttttcctgc
ccagcctgccaccaccgggccatgcggatatgttgtccagcccaacacca
caggaccatttctgtatgtaagacaattctatccagcccgccacctctgg
actccctcccctgtatgtaagccctcaataaaaccccacgtctcttttgc
tggcaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaa
>NM_198399 1
aacagattttaactctgaaaagccatttccagtgtctatagactattgtg
agcctggagaagtagcatttagttgggatagcttcactagagctgcctgc
caaagacttccttccacaggatcttgtcgcaccagcaactgacaggagct
tgggagctcgggagcttgggagagggcttatgtttttaataatgtagctg
tcagttcgaagcctggaaatgttgaccctcaaagggcataaaatcttgtt
attttaatttgcatctgggagaatgtctgagcaaggagacctgaatcagg
caatagcagaggaaggagggactgagcaggagacggccactccagagaac
ggcattgttaaatcagaaagtctggatgaagaggagaaactggaactgca
gaggcggctggaggctcagaatcaagaaagaagaaaatccaagtcaggag
caggaaaaggtaaactgactcgcagccttgctgtctgtgaggaatcttct
gccagaccaggaggtgaaagtcttcaggatcagactctctgaaaactgca
aatggaaaggaattcaaaagaatttagattaaaagttaaataaaaagtag
gcacagtagtgctgaattttcctcaaaggctctcttttgataaggctgaa
ccaaatataatcccaagtatcctctctccttccttgttggagatgtctta
cctctcagctccccaaaatgcacttgcctataagaaacacaattgctggt
tcatatgaaacttaggaaatagtgaataaggtgcatttaactttggagaa
atacttttatggctttggtggagatttctcaatactgcaaaagttgtcca
gaaatgaatctgagctgatggtgactttaagttaatattattaatatatc
actgcatatttttacccttatttttgctccttacagcaagattagtaggt
tataaaaatttaaatttaaacaaaattatttcatgacaaaatgggaaact
tcacatcatacttatttttgtttgcctttcaggcatcatattagctttta
taaaaaatggtcttgctgctgaaattgtacttattttatcagaggctggg
tgcagtcaagacaaaagtaaaatggtttacctgagcccaggggagggaaa
attgattaagatatcattatttttgtttggtttggttttgcttttttcct
cttactttaattgaaatactctgaattcccctcatggaaacagagagcat
tgagagcactttctttaaaaggaccaaaaataaattcctaatagattttg
tcctaagagagtgtttttttttctagcatcattttctttacatgccactc
atgtcataaggcatggacaggctatctttcagtggccattactatgtttc
gtacacatgctttattttacttgggctctgagaaatgtgtggctttcctt
cagcattttatttgtgcttctctttttaatggagattgaaaagggagaat
aatgtgaatatcacggcttatattattaaatgttgattgatggcttgtaa
tgtactgcacacaatatatgttaactctgcagaatgacagaccctgggag
aagtaatgccccagttgtcccccactcctaatgccaggcagagaaggaca
gcctttatagacttaatctgctttttgtcccatttgacaaggtaccagga
ggaaattttttaagggatcaactgtatcacagtgcccactctggacctaa
gtctagtgtatccatacaattggtgcagagaaataaggtgtaaatggtgc
tttgttcctgctggttccaagctcagaaaccaagactagctttgtaggag
agaatgagagcctgcaagcctctctttggattggctgaggagtggtggga
gcagggggttgatagaaaacatccagacacacatataagcaagtggccgt
gctacctttttagagaataaagaaacagacttttgagtttatatgcaatg
ccttcattaggtaccaccggcacttacaaaatgtgcggactgaatcccag
agaacactggcagatgtatacagtatatggattgtatcgcttccccaatg
tttgtaaattcacagtatttggaaaactgccttcattttccagtgtggga
aaaactcttgctacctgtattacttgatctcagacccatacctgatggtt
cagtctgtccttaagttaaaagaattttgcttttctaatgttatactatt
tacctgtcagtgtattactgcaacttgaatcactcttttactgttgttgg
atataaacttatcctgtaccaatgtatttattaacacttgtattttatta
ttgagcatatcaataaaaatattaaaaaataacagattgttttttaccaa
aaaaaaaaaaaaa
>NR_026816 1
caacccactctctgtgctatgacttcattactctttcccagcccagccct
gggcaagccccttacgaagtctcaggctacctggatgaccaccctttctt
atgatgctgcaaggagggcaggtgggcagagccccgtgcatcctgggctc
aggccagggacccaagagcttgggagaagctggttctcagactgaaggcc
agagcccagcaccttgtcaccatcccggggagcatcatggcacacaacaa
ccagagccaaggctacagctagagagttgactcctctatttgagattgac
aggcctcggaagtcaaaataagtggtttcctagaccgggtcgagagcaag
tctctattggtcccaactgagttttttcagctggtttttcaaccaaacag
cacctcatctcccagtgaggggaagggaaggctgggctgagagcagcaag
gctgctcatctcacctctccccacccagccatgccagccgcctcacctgg
tggggagaggtgggcctcacctgggtcccctggcagtgctctgtgaaggg
tcttgacattgcactgtaataataaaggtgtgtgtgaagtatcaaaaaaa
>NR_027917 1
atgaagatgattgagcagcacaatcaggaatacagggaagggaaacacag
cttcacaatggccatgaacgcctttggagaaatgaccagtgaagaattca
ggcaggtggtgaatggctttcaaaaccagaagcacaggaaggggaaagtg
ctccaggaacctctgcttcatgacatccgcaaatctgtggattggagaga
gaaaggctacgtgactcctgtgaaggatcagtgcagctggggctctgtaa
ggacagatgttaggaaaactgagaaactagtttcactgagtgtgcagacc
tggtggactgctctaggcttcaaggcaatgttggctgcatttttggagaa
ccattattttgcttccagtatgttgccgacaatggaggcctggactctga
ggaatccttttcatatgaagaaaagctctggagactggaaagtccaaggt
cacagaggtgcatctggtgagagccttcttgctagtggggaatctcagca
gagtcctgaggtggcacagtattctgggaagcatcaagtgcagtgtcatc
ttatcgaggaggctctgcagatgctaagtggtggggatgaggatcacgat
gaagacaaatggccccatgacatgaggaatcatctggctggagaggccca
ggtgtag
>NR_002777 3
cttgtcctttcagaagatcagagacaagtgatatctgtgccaatttggcc
ttttcagtgttataattatggtgtcttgggatcccaatatttctcctaat
gtttccctgatgtgatactttgagagcccaggatgccagtacaataattg
aaattcacaaatgtctggtatcttgtccctcgtgccccatatattatctg
tggtttcggagagctcacttgtctcttatcttcagaaatgacagcacatg
aaatgttgtttggagccactgtcacatcaactgtagaaaaattaacaggt
cagctaagggatataatgtaactttatttgtgatatgagagaaatcttga
taaagacttgagagaaaactgggaggaaccttgtttagaagttataagga
ggggtaagttatgtgtgtcttggaaggagaatcataaatcttaaaacatg
agcctaatagagaacataaaattctaaaagataaagataataataatgat
aagccgcagggtggcttatgataatgtgacttctccttaccccagtagcg
tcggacatctgtcagctctgaaatgataaaaatgcacaatattgaataca
aacaaaggagtcagcactgaaattcattttctctccagattagggaaaga
gtaggtatgccctatggtagggcagtaaattgctgaatgatgagatgaaa
cagccacctagccatttcccattaaatataatcccatcagcagcagacaa
tatctatcctcccctatcccctctatccatatttggaaactgcaccctct
tccctatttagcaccctaacaccacttgaattccataaccctgttgttga
tctagctctcctcacctctaaacacttctagcattcctttcagatcagga
gctcgaaacactctcctttgattttttggaaaagtttctggcttcttcaa
ggtcacgttctccgtcctaagaattaaaaaaaaaaaaaaaaacttccaaa
cctttgaccttgtgtccgtggaacacccctgacttcctatcatttcaacc
cattgaggcacttgaactctcttcttggggatcctgagaagggagagtgc
aaactcttgaccctggaggcaaacaaaatgttctcatgtttgccttccca
cttactttctgtgagaacgtgggaagatcttaacctctcagaagcacagt
ttcttccttctaaaatgaaataattaacctctccctgtctacattcttaa
actcataggacataaaaaaaaaaaaaa
>NR_033769 1
ggcctctggcgggcctccagccagttagaccatttgactaggacgtgtgc
agctcagccagccacagaactggaatttttcaggagcagggggagcatgg
agtttggactttgctgagcaactgaagtggagcgcagagcttgctcgctt
aggagagggcagcatggatggcaaacaagggggcatggatgggagcaagc
ccacggggccaagagactctcctgacaccaggcttctttcaaacccattg
atgggtgattctgtgtctgattggtctcctatgcctgaagctgcaatcta
cggacatcagctgtctctgaggaacctcatcagccacgggtggcttgtga
acatcatcatggcagatcatgtttccccactccatgaagcctgtctcaga
ggtcatccctctcgtgtaaagattttattaaagcatggagctcaggtgaa
tggcgtgacaacagactggcacactccactgtttaatgtttgtatcagca
gcagctgggattatgcttctgcagcatggagccagcgttcaacctgagag
tgatctggcatcccccgtccatgaagctgctaggagaggccacgtggagt
gtgtcgactctcttacagcttataggggcaaaaatgaccataacatcagc
cacgtgggcacttcactgtatttggcttgtgaaaaccagcagatagcctg
tgtcaagaagcttctggagtcaggagcagacctgaacccagggagaggtt
ccccacttcatgcagtggccttcatgaaggccctcatgaaggattcccca
cttcatgcagtggccaggacagccagtgaagagctggcctgcctgctcat
ggattttggagcagacacccaggccaagaatgctgaaggcaaatgtcatg
tggagctggtgcctccagagagccctttgatccagctcttcttggagaga
gaagggcccccttcttttgatgcagttatgcctagaaatcagaagggctt
tggaatccagcagcatcataagataaccaaagtcgtcctcccagaggatc
tgaaatggtttctcctacatctttgtatgtatcaatggaatggattcaca
aacaatgtgaaaacattattgagtgttgtagccactagaattttaaaatc
aagttaggtttatagagtttgactagttttttcgattagatttgtattag
ttataaatttgttcatagagtttgactaattttttcgattagatttgtat
ttgttaaactctgaagccagagtttaaacacactgcatacgtttgtatga
ttagttagaaggcatgaagacttttttccctgcttggagactgtctaaaa
taacagctattgttttgcatatccactgcaggccaagcactttcagcatc
atctaattcagccctcacagcaactgggtcaatctgtccaatttcccagg
gcaaggatagaggagtcagattcaaatacaggttttctgacgttaactta
tgtgatgatttgatcaaagcaggattttccagcatcactatccttgttcc
atctctgctatatgggaatgaaaataaagaaatgtatttcaaaaaaataa
aaagaaaagaaaaacagagacggtc
>NM_016326 3
atgcgcgcaagagagcgggaagccgagctgggcgagaagtaggggagggc
ggtgctccgccgcggtggcggttgctatcgcttcgcagaacctactcagg
cagccagctgagaagagttgagggaaagtgctgctgctgggtctgcagac
gcgatggataacgtgcagccgaaaataaaacatcgccccttctgcttcag
tgtgaaaggccacgtgaagatgctgcggctggtgtttgcacttgtgacag
cagtatgctgtcttgccgacggggcccttatttaccggaagcttctgttc
aatcccagcggtccttaccagaaaaagcctgtgcatgaaaaaaaagaagt
tttgtaattttatattactttttagtttgatactaagtattaaacatatt
tctgtattcttccacatattttctgcagttattttaactcagtataggag
ctagaggaagagatttccgaagtctgcaccccgcgcagagcactactgta
acttccaagggagcgctgggagcagcgggatcgggttttccggcacccgg
gcctgggtggcagggaagaatgtgccgggatccgcctcagggatctttga
atctctttactgcctggctggccggcagctccg
>NM_181641 2
atgcgcgcaagagagcgggaagccgagctgggcgagaagtaggggagggc
ggtgctccgccgcggtggcggttgctatcgcttcgcagaacctactcagg
cagccagctgagaagagttgagggaaagtgctgctgctgggtctgcagac
gcgatggataacgtgcagccgaaaataaaacatcgccccttctgcttcag
tgtgaaaggccacgtgaagatgctgcggctggcactaactgtgacatcta
tgaccttttttatcatcgcacaagcccctgaaccatatattgttatcact
ggatttgaagtcaccgttatcttatttttcatacttttatatgtactcag
acttgatcgattaatgaagtggttattttggcctttgcttgtgtttgcac
ttgtgacagcagtatgctgtcttgccgacggggcccttatttaccggaag
cttctgttcaatcccagcggtccttaccagaaaaagcctgtgcatgaaaa
aaaagaagttttgtaattttatattactttttagtttgatactaagtatt
aaacatatttctgtattcttccacatattttctgcagttattttaactca
gtataggagctagaggaagagatttccgaagtctgcaccccgcgcagagc
actactgtaacttccaagggagcgctgggagcagcgggatcgggttttcc
ggcacccgggcctgggtggcagggaagaatgtgccgggatccgcctcagg
gatctttgaatctctttactgcctggctggccggcagctccg
>NM_001144931 1
gtttccgttcctctgcccgccatgccgttcctagagctgcacacgaattt
ccccgccaaccgagtgcccgcggggctggagaaacggctgtgcgccgtcg
ctgcctccatcttgggcaaacctgcagaccttgtgaacgtgacggtacgg
ccgggcctggccagggcgctgagcgggtccaccgagccctgcgcgcagct
gtccatctcctccatcggcgtagtgggcaccgccgaggacaaccgcagcc
acagtgcccacttctttgagtttctcaccaaggagctagccctgggccag
gaccggtgcgcaggggtagtaggcccggaatattattctaaaacacaatc
agagtactccattcctgctaacagtttaaagccaaacacctaggcaggcc
atttaggcttctgaatgactgggtcttgaccaggagagctgctgtctagg
ttttctcttcctgaccagttcctcaagagaaatgcaaaactagtgattaa
cagtaagagtcaggcagggcgcggtggctcacgcctgtaatcccagcact
ttgggaggccgag
>NR_029429 1
ggacaccaccccaaaatttcctagtcctctttgatacgggttcctccaat
ctgtagctgccctccatctactgccagagccaagtctgctccaatcacaa
caggttcaatcccagcctgtcctccaccttcagaaacgatggacaaacct
atggactatcctatgggagtggcagcctgagtgtgttcctgggctatgac
actgtgactgttcataacatcgttgtcaataaccaggagtttggcctgag
tgagaatgagcccagcgaccccttttactattcagactttgacgggatcc
tgggaatggcctacccaaacatggcagaggggaattcccctacagtaatg
caggggatgctgcagcagagccagcttactcagcccgtcttcagcttcta
cttcacctgccagccaacccgccagtattgtggagagctcatccttggag
gtgtggaccccaactttattctggtcagatcatctggacccctgtcagcc
cgtaactgtactggcagattgccatcgaggaatttgccatcggtaaccag
gccactggcttgtgctctgagggttgccaggccattgtggataccgagac
cttcctgc
>NR_026551 1
tgtggcctgagaggacggccaggactggccagaaaagagagggacgtggc
taaacgtgagggggcgtggccaagatggccgcgtgcgggatcctcgggta
ccgggagcgaacgaggaggttctggctcagtgcatccactctgggagagc
gtggacctggttcctgggggcgatcgccagtcacccatcaacattcggtg
gagggacagtgtttatgatcccggcttaaaaccactgaccatctcttatg
acccagccacctgcctccacgtctggaataatgggtactctttcctcgtg
gaatttgaagattctacagataaatcagctgcacttagtgcattggaacg
cagtcaaatttgaaaactttgaggatgcagcactggaagaaaatggtttg
gctgtgataggagtatttttaaagatttcggaaacttctggcagcccagt
gtctactggaaggcccaagccgcttgccagaaagctgcgccccgcccaaa
agcactgggttctgcagtccaggcccttcctcagctcccaggtccaggag
aactgcaaggtcacctacttccacaggaagcactgggtccgcatccggcc
cctccgcaccactcctcccagctgggactacacccgcatctgcatccaga
gagagatggtccccgcccgcatccgcgtcctgagagagatggtccccgag
gcctggaggtgctttcccaacaggctgccgctgctgagcaacatcaggcc
tgatttctccaaggctcccctggcctacgtgaagcggtggctttggaccg
cccgccacccccacagcctgtccgcagcctggtgaccgtgaaaatcgccc
cgccagagagcagaggaagcccgacgcccaggccatctgccttcaggtct
gtgatgagaaacggagtggcctgttccgttgtgcccaggtctaggccgct
gagcagagccctcactcccaggcagagttgtctgaatccttcct
>NM_181640 2
atgcgcgcaagagagcgggaagccgagctgggcgagaagtaggggagggc
ggtgctccgccgcggtggcggttgctatcgcttcgcagaacctactcagg
cagccagctgagaagagttgagggaaagtgctgctgctgggtctgcagac
gcgatggataacgtgcagccgaaaataaaacatcgccccttctgcttcag
tgtgaaaggccacgtgaagatgctgcggctggatattatcaactcactgg
taacaacagtattcatgctcatcgtatctgtgttggcactgataccagaa
accacaacattgacagttggtggaggggtgtttgcacttgtgacagcagt
atgctgtcttgccgacggggcccttatttaccggaagcttctgttcaatc
ccagcggtccttaccagaaaaagcctgtgcatgaaaaaaaagaagttttg
taattttatattactttttagtttgatactaagtattaaacatatttctg
tattcttccacatattttctgcagttattttaactcagtataggagctag
aggaagagatttccgaagtctgcaccccgcgcagagcactactgtaactt
ccaagggagcgctgggagcagcgggatcgggttttccggcacccgggcct
gggtggcagggaagaatgtgccgggatccgcctcagggatctttgaatct
ctttactgcctggctggccggcagctccg
>NM_016951 3
atgcgcgcaagagagcgggaagccgagctgggcgagaagtaggggagggc
ggtgctccgccgcggtggcggttgctatcgcttcgcagaacctactcagg
cagccagctgagaagagttgagggaaagtgctgctgctgggtctgcagac
gcgatggataacgtgcagccgaaaataaaacatcgccccttctgcttcag
tgtgaaaggccacgtgaagatgctgcggctggcactaactgtgacatcta
tgaccttttttatcatcgcacaagcccctgaaccatatattgttatcact
ggatttgaagtcaccgttatcttatttttcatacttttatatgtactcag
acttgatcgattaatgaagtggttattttggcctttgcttgatattatca
actcactggtaacaacagtattcatgctcatcgtatctgtgttggcactg
ataccagaaaccacaacattgacagttggtggaggggtgtttgcacttgt
gacagcagtatgctgtcttgccgacggggcccttatttaccggaagcttc
tgttcaatcccagcggtccttaccagaaaaagcctgtgcatgaaaaaaaa
gaagttttgtaattttatattactttttagtttgatactaagtattaaac
atatttctgtattcttccacatattttctgcagttattttaactcagtat
aggagctagaggaagagatttccgaagtctgcaccccgcgcagagcacta
ctgtaacttccaagggagcgctgggagcagcgggatcgggttttccggca
cccgggcctgggtggcagggaagaatgtgccgggatccgcctcagggatc
tttgaatctctttactgcctggctggccggcagctccg
>NR_002773 1
cagcaccacaccaggaccctccagaggctgtgagaaacatcctgcaccca
ggtcctctctatctgtttatcattgtctattttgtattctgcattcagaa
ccaagagcctgaagacgacccaggagctttagctatggctgtcttcatta
ttttgtccctgtttagtgttctggtgacaggcatgggtgaaggtggggct
gggagtgagaaaggaggtgagagggaatgtaagctgaaccagcttcccca
ttgcccctccgtatctcccagtgcccagccttggacacaccctggccaga
gccagctgtttgcagacctgagccgagaggagctgacggctgtgatgcgc
tttctgacccagcagctggggccagggctggtggatgcagcccaggccca
gccctcggacaactgtgtcttctcagtggagttgcagctgcctcccaagg
ctgcagccctggctcacttggacagggggagccccccacctgcccgggag
gcactggccatcgtcttctttggcaggcaaccccagcccaacgtgagtga
gctggtggtggggccactgcctcacccctcctacatgcgggacgtgactg
tggagcgtcatggaggccccctgccctatcaccgacgccccatgttgttc
caagagtacctggacatagaccagatgatcttcgacagagagctgcccca
ggcttctgggcttctccatcactgttgcttctacaagcgccggggacgga
acctggtgacaatgaccacggctccccgtggtctgcaatcaggggaccgg
gccacctagtttggcctctactacaacatctcgggcgctgggttcttcct
gcaccacgtgggcttggagctgctagtgaaccacaaggcccttgaccctg
cccgctggactatccagaaggtgttctatcaaggccgctactatgacagc
ctggcccagctggaggcccagtttgaggccggcctggtgaatgtggtgct
gatcccagacaatggcacaggtgggtcctggtccctgaagtcccctgtgc
ccccgggtccagctccccctctgcagttccatccccaaggcccccgcttc
agtgtccagggaagtcgagtggcctcctcactgtggactttctcctttgg
cctcggagcattcagtggcccaaggatctttgacgttcccttccaagggg
agagggtggcctatgaagtcagtgtccaggcggccttggccatctatgga
ggcaattctccttctgctctacgaagccggtacatagatagtggctttgg
cttgggccacttctccacgcccctgacccatggggtggactgcccctacc
tggccacctacgtggactggcacttcctttttgagtcccaggccgccaag
acaatacgcgatgccttttgtatatttgaacagaaccagggcctccccct
gcggcgacaccactcagatctctactcccactactttgggggccttgcgg
aaacggtgctggtcatcagatctgtgtctactatgctcaactatgactat
gtgtgggatatggtcttccaccctaatggggccatagaaatcagactcca
caccaccggctacatcagctcagcattcccctttggtgctgcccagaggt
atggaaacaaagtttcagagcacaccctgggcacggtccacacccacagc
gcccacttcaaggtggacctggatgtagcaggtaaggcatcctggcagag
gcaaaagtgctggaggggtgagctgaagtctccatgcctagctttaaaag
ttttcgttgggctgggagcagtagcttatgcctgtaagcccaacactttg
ggagactgaggggggtggatcacttgaggtcaggagttcaaaaccagcct
ggccaacatggcgaaatcctgtctgtactaaaaatacaaaaattagctgg
gcatgggtatgctgtaatcctagctactcgggaggctgaggcaggagaat
cacttgaatctgggagtcagaggttgcagtgagctgagattgagccactg
cactccatcctgcgtgactgaac
>NR_037806 1
attcccagtcacccactcactcagaaagccgggagtcatcggacaccttg
ctggtcagaggtcctgggggtggttttgaaccatcagagcttggactttt
ctgacttccccagcaaggatcttcccacttcctgctccctgtgttcccac
cctccagtgttggcacaggcccacccctggctccaccagagccagaagca
gaggtagaatcaggcgggccccgggctgcactccgagcagtgttcctggc
catctttgctactttcctagagaacccggctgttgccttaaatgtgtgag
agggacttggccaaggcaaaagctggggagatgccagtgacaacatacag
ttcatgactaggtttaggaattgggcactgagaaaattctcaatatttca
gagagtccttcccttatttgggactcttaacacggtatcctcgctagttg
gttttaagggaaacactctgctcctgggtgtgagcagaggctctggtctt
gccctgtggtttgactctccttagaaccaccgcccaccagaaacataaag
gattaaaatcacactaataacccctggatggtcaatctgataataggatc
agatttacgtctaccctaattcttaacattgcagctttctctccatctgc
agattattcccagtctcccagtaacacgtttctacccagatcctttttca
tttccttaagttttgatctccgtcttcctgatgaagcaggcagagctcag
aggatcttggcatcacccaccaaagttagctgaaagcagggcactcctgg
ataaagcagcttcactcaactctggggaatgctaccattttttttccaaa
gtagaaaggaagcacttctgagccagtgaccactgaaagatgaacactct
tcctgatcctctcctctagaattcatctcctcctgctagcagccgcgtcc
tggaggagcagcggatggggaatccattctgtttcttcctggtgtttagg
aagttgccccacacacagattgccccgatgtccaaccagaagaagtgaaa
ctgctgctgggtctggagaggtgaagacccgtggccagcttctgttgttg
ccatcggccattgctttttgttcgcttgcttttggttttgcaagaagagc
ggcctctgtctctgatctgcttcaaatcatcattccatcagtgacagaag
tggctgttccatcagtggtcgcagccagttcagctcctgcatccatcccc
aagtgttctgagtggaatttgaggcctccccaaccacctaccaaaaaagg
agggtgaaatgaaaggaagaagaaaaactcagcattctttcctctgacaa
agagtaaaacgacaaggaatatcggcctgaattctcttcccaagaagaaa
gaaagcacaccaacgcaggcatttgtcttctgtccatggtgctgaagttt
attcactttcaaaccactttcagtaacagcaaattctttagaaaaggaaa
atacagggaaagggataaacctcactgacttggaggaaatcaagaggagt
gagcacagcatcagaaagccccctggccccagactgcacccgctttcctg
gccctaccttgaaatccatcaggtctgcgttggacacggcattgtacatg
ggattagctctg
    任何帮助和投入都将不胜感激

    谢谢你花时间来解决我的问题

    我认为这项工作的方式不是将序列分成三部分，而是查找完整序列中出现的所有
    $pattern
    ，并确定模式从哪三部分开始

    内置变量
    $-[0]
    包含最近一次成功匹配开始的偏移量

    下面的代码符合我的要求。它通过累加每个序列（在找到新序列ID或到达文件末尾时结束）并将其传递给
    进程_seq
    子例程来工作

    子例程获取序列的长度，并计算字符串每三分之一末端的偏移量。惯用的
    sprintf'%.0f'，$value
    用于将分数值舍入到最近的字符位置

    序列中每次出现
    $regex
    ，都会调整
    @counts
    数组。要增加的
    @counts
    元素是通过比较
    $-[0]
    中匹配的起始位置与序列三个段中每个段的结束偏移量来确定的

    处理每个序列后，
    @计数
    中的值将累加到
    @总计
    中，以给出所有序列的总体数字

    显示使用示例数据时程序的输出。总计为
    （9,1,6）

    我认为这项工作的方式不是将序列分为三个部分，而是查找完整序列中出现的所有
    $pattern
    ，并确定模式从哪三个部分开始

    内置变量
    $-[0]
    包含最近一次成功匹配开始的偏移量

    下面的代码符合我的要求。它通过累加每个序列（在找到新序列ID或到达文件末尾时结束）并将其传递给
    进程_seq
    子例程来工作

    子例程获取序列的长度，并计算字符串每三分之一末端的偏移量。惯用的
    sprintf'%.0f'，$value
    用于将分数值舍入到最近的字符位置

    序列中每次出现
    $regex
    ，都会调整
    @counts
    数组。要增加的
    @counts
    元素是通过比较
    $-[0]
    中匹配的起始位置与序列三个段中每个段的结束偏移量来确定的

    处理每个序列后，
    @计数
    中的值将累加到
    @总计
    中，以给出所有序列的总体数字

    显示使用示例数据时程序的输出。总计为
    （9,1,6）

    我取消了Borodin的process_seq函数，但使用Bio:SeqIO按顺序读取文件，这比手动逐行读取和确定各种处理的逻辑更具优势。我相信这些优点是：

    • 由许多其他人开发和测试的代码
    • 只要有可能，如果输出是通过Bio:：SeqIO模块完成的，则可以创建结果文件 
      use strict;
use warnings;

my $gpat = '[G]{3,5}';
my $npat = '[A-Z]{1,25}';
my $pattern = $gpat.$npat.$gpat.$npat.$gpat.$npat.$gpat; 
my $regex = qr/$pattern/i;

open my $fh, '<', 'sequences.txt' or die $!;

my ($id, $seq);
my @totals = (0, 0, 0);

while (<$fh>) {

  chomp;

  if (/^>(\w+)/) {
    process_seq($seq) if $id;
    $id = $1;
    $seq = '';
    print "$id\n";
  }
  elsif ($id) {
    $seq .= $_;
    process_seq($seq) if eof;
  }
}

print "Total: @totals\n";



sub process_seq {

  my $sequence = shift;
  my $length = length $sequence;

  my @offsets = map {sprintf '%.0f', $length * $_ / 3} 1..3;

  my @counts = (0, 0, 0);

  while ($sequence =~ /$regex/g) {
    my $place = $-[0];
    for my $i (0..2) {
      next if $place >= $offsets[$i];
      $counts[$i]++;
      last;
    }
  }

  print "@counts\n\n";
  $totals[$_] += $counts[$_] for 0..2;
}

      NR_037701
0 0 1

NM_198399
1 0 0

NR_026816
1 0 1

NR_027917
0 0 0

NR_002777
0 0 0

NR_033769
1 0 0

NM_016326
1 0 1

NM_181641
1 0 1

NM_001144931
0 0 0

NR_029429
0 1 0

NR_026551
1 0 0

NM_181640
1 0 1

NM_016951
1 0 1

NR_002773
1 0 0

NR_037806
0 0 0

Total: 9 1 6

      #!/usr/bin/perl
use strict;
use warnings;
use Bio::SeqIO;

my $gpat = '[G]{3,5}'; 
my $npat = '[A-Z]{1,25}'; 
my $pattern = $gpat.$npat.$gpat.$npat.$gpat.$npat.$gpat;  
my $regex = qr/$pattern/i; 

my $in = Bio::SeqIO->new ( -file   => "fasta_dat.txt",
                           -format => 'fasta');
my @totals;
while ( my $seq = $in->next_seq() ) {
    process($seq);
}

print "Totals:   ";
print "@totals\n";

sub process {
    my $seq = shift;
    my @offset = map {sprintf '%.0f', $seq->length * $_ / 3} 1..3;
    my $sequence = $seq->seq;

    my @count = (0,0,0);
    while ($sequence =~ /$regex/g) {
        my $place = $-[0];
        for my $i (0 .. 2) {
            next if $place >= $offset[$i];
            $count[$i]++;
            last;
        }
    }
    print $seq->id, "\n@count\n";
    $totals[$_] += $count[$_] for 0 .. $#count; 
}