Class: BacterialComparator

Inherits:
Object
  • Object
show all
Defined in:
lib/bacterial-comparator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options, root) ⇒ BacterialComparator

Initialize BacterialAnnotator options, options, ROOT, options, options)



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# File 'lib/bacterial-comparator.rb', line 19

def initialize options, root

  @root = root
  @outdir = options[:outdir]
  Dir.mkdir(@outdir) if ! Dir.exists? @outdir
  @genomes_list = options[:genomes_list]
  @proc = options[:proc].to_i

  min_cov = options[:min_cov].to_f
  min_pid = options[:pidentity].to_f
  if min_cov > 1
    min_cov = min_cov/100
  end
  if min_pid > 1
    min_pid = min_pid/100
  end

  @ref_prot = get_ref_prot
  @synteny = read_prot_synteny
  @stats = extract_syntenic_fasta min_cov, min_pid

end

Instance Attribute Details

#genomes_list ⇒ Object (readonly)

Returns the value of attribute genomes_list.



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# File 'lib/bacterial-comparator.rb', line 15

def genomes_list
  @genomes_list
end

#stats ⇒ Object (readonly)

Returns the value of attribute stats.



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# File 'lib/bacterial-comparator.rb', line 15

def stats
  @stats
end

Instance Method Details

#build_multifasta(ref_prot, synteny) ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 84

def build_multifasta ref_prot, synteny

  pep_out_dir = "./#{@outdir}/genes-align-pep"
  dna_out_dir = "./#{@outdir}/genes-align-dna"

  # create multifasta by syntenic proteins (pep)
  if ! File.exists? pep_out_dir+"/#{ref_prot}.pep"
    pep_out = File.open(pep_out_dir+"/#{ref_prot}.pep", "w")
    pep_file = Dir["#{@genomes_list[0]}/*.pep"]
    flatfile = Bio::FlatFile.auto("#{pep_file[0]}")
    pep_out.write(get_sequence_from_flatfile flatfile, ref_prot)
    @genomes_list.each_with_index do |g,i|
      flatfile = Bio::FlatFile.auto("#{g}/Proteins.fa")
      pep_out.write(get_sequence_from_flatfile flatfile, synteny[i][:query_prot])
    end
    pep_out.close
  end

  # create multifasta by syntenic genes (dna)
  if ! File.exists? dna_out_dir+"/#{ref_prot}.dna"
    dna_out = File.open(dna_out_dir+"/#{ref_prot}.dna", "w")
    # create multifasta by syntenic proteins
    dna_file = Dir["#{@genomes_list[0]}/*.dna"]
    flatfile = Bio::FlatFile.auto("#{dna_file[0]}")
    dna_out.write(get_sequence_from_flatfile flatfile, ref_prot)
    @genomes_list.each_with_index do |g,i|
      flatfile = Bio::FlatFile.auto("#{g}/Genes.fa")
      dna_out.write(get_sequence_from_flatfile flatfile, synteny[i][:query_prot])
    end
    dna_out.close
  end

end

#extract_syntenic_fasta(min_cov, min_pid) ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 119

def extract_syntenic_fasta min_cov, min_pid

  "# Extracting Proteins and Genes multifasta.."
  nb_of_syntenic = 0
  stats = {}
  stats[:syntenic] = []
  fout = File.open("#{@outdir}/cds-synteny.tsv", "w")
  fout.write("Gene\t"+@genomes_list.join("\t")+"\n")

  to_build_multifasta = []

  @synteny.each do |k,v|
    is_syntenic = 1
    v.each do |v_|
      if v_[:query_cov].nil?
        is_syntenic = 0
        break
      elsif v_[:query_cov] > min_cov and
           v_[:ref_cov] > min_cov and
           v_[:pId] > min_pid
      # synteny -> great !
      else
        is_syntenic = 0
        break
      end
    end

    if is_syntenic == 1
      nb_of_syntenic += 1
      # build_multifasta k, v
      to_build_multifasta << [k,v]
      fout.write("#{k}")
      v.each do |x|
        fout.write("\t#{x[:query_prot]}|#{x[:query_cov]}|#{x[:ref_cov]}")
        stats[:syntenic] << k
      end
      fout.write("\n")
    end

  end

  fout.close

  pep_out_dir = "./#{@outdir}/genes-align-pep"
  dna_out_dir = "./#{@outdir}/genes-align-dna"
  Dir.mkdir(pep_out_dir) if ! Dir.exists? pep_out_dir
  Dir.mkdir(dna_out_dir) if ! Dir.exists? dna_out_dir

  Parallel.map(to_build_multifasta, in_processes: @proc) { |k,v|
    build_multifasta k, v
  }

  stats[:nb_of_syntenic] = nb_of_syntenic
  puts "Syntenic genes : " + nb_of_syntenic.to_s + " / " + @ref_prot.length.to_s

end

#get_ref_prot ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 59

def get_ref_prot
  ref_prot = []
  pep_file = Dir["#{@genomes_list[0]}/*.pep"]
  flatfile = Bio::FlatFile.auto("#{pep_file[0]}")
  flatfile.each_entry do |entry|
    ref_prot << entry.definition.split(" ")[0]
  end
  ref_prot
end

#get_sequence_from_flatfile(flatfile, name) ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 70

def get_sequence_from_flatfile flatfile, name

  out = ""
  flatfile.each_entry do |entry|
    if entry.definition.split(" ")[0] == name
      bioseq = Bio::Sequence.auto(entry.seq)
      out = bioseq.output_fasta("#{name}",60)
    end
  end
  out

end

#mafft_align(f) ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 177

def mafft_align f

  trying = 0
  begin
    cmd = system("#{@root}/mafft.linux --quiet #{f} > #{f}.aln")
    if File.size("#{f}.aln") == 0
      puts "File size of 0.. --#{f}--"
      puts "Command used : #{@root}/mafft.linux --quiet #{f} > #{f}.aln"
      fail
    else
      status = "OK"
      status = "FAILED" if cmd != true
      puts "Alignment #{f} : #{status}"
    end
  rescue
    if trying < 3
      trying += 1
      retry
    end
    status = "FAILED"
    puts "Alignment #{f} : #{status}"
  end

end

#mafft_align_all_dna ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 211

def mafft_align_all_dna
  puts "# MAFFT multialign all gene sequences.."
  puts "# MAFFT multialign all protein sequences.."
  Dir.chdir("#{@outdir}/genes-align-dna/")
  Parallel.map(Dir["*.dna"], in_processes: @proc) { |f|
    mafft_align f
  }
  Dir.chdir("..")
end

#mafft_align_all_pep ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 202

def mafft_align_all_pep
  puts "# MAFFT multialign all protein sequences.."
  Dir.chdir("#{@outdir}/genes-align-pep/")
  Parallel.map(Dir["*.pep"], in_processes: @proc) { |f|
    mafft_align f
  }
  Dir.chdir("..")
end

#read_prot_synteny ⇒ Object 



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# File 'lib/bacterial-comparator.rb', line 42

def read_prot_synteny
  synteny = {}
  @genomes_list.each do |g|
    puts "#{g}/Prot-Synteny.tsv"
    file = File.open("#{g}/Prot-Synteny.tsv", "r")
    l = file.gets             # skip header
    while l = file.gets
      # AAK98805.1      spr0001 453     1.0     100.0   ABAC01000005_14 453     1.0
      lA = l.chomp.split("\t")
      synteny[lA[0]] =  [] if ! synteny.has_key? lA[0]
      synteny[lA[0]] << {ref_cov: lA[3].to_f, pId: lA[4].to_f, query_prot: lA[5], query_cov: lA[7].to_f}
    end
    file.close
  end
  synteny
end