annotate peptideGenomicCoodinate.py @ 0:58c4333afe1f draft

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author pravs
date Fri, 06 Apr 2018 18:27:47 -0400
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2 #
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3 # Author: Praveen Kumar
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4 # University of Minnesota
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5 #
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6 # Get peptide's genomic coordinate from the protein's genomic mapping sqlite file (which is derived from the https://toolshed.g2.bx.psu.edu/view/galaxyp/translate_bed/038ecf54cbec)
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7 #
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8 # python peptideGenomicCoordinate.py <peptide_list> <mz_to_sqlite DB> <genomic mapping file DB> <output.bed>
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9 #
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10 #
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11
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12 def main():
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13 import sys
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14 import sqlite3
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15 conn = sqlite3.connect(sys.argv[2])
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16 c = conn.cursor()
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17 c.execute("DROP table if exists novel")
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18 conn.commit()
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19 c.execute("CREATE TABLE novel(peptide text)")
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20 pepfile = open(sys.argv[1],"r")
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21
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22 for seq in pepfile.readlines():
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23 seq = seq.strip()
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24 c.execute('INSERT INTO novel VALUES ("'+seq+'")')
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25 conn.commit()
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26
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27 c.execute("SELECT distinct psm.sequence, ps.id, ps.sequence from db_sequence ps, psm_entries psm, novel n, proteins_by_peptide pbp where psm.sequence = n.peptide and pbp.peptide_ref = psm.id and pbp.id = ps.id")
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28 rows = c.fetchall()
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29
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30 conn1 = sqlite3.connect(sys.argv[3])
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31 c1 = conn1.cursor()
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32
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33 outfh = open(sys.argv[4], "w")
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34
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35 master_dict = {}
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36 for each in rows:
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37 peptide = each[0]
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38 acc = each[1]
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39 acc_seq = each[2]
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40
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41 c1.execute("SELECT chrom,start,end,name,strand,cds_start,cds_end FROM feature_cds_map map WHERE map.name = '"+acc+"'")
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42 coordinates = c1.fetchall()
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43
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44 if len(coordinates) != 0:
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45 pep_start = 0
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46 pep_end = 0
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47 flag = 0
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48 splice_flag = 0
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49 spliced_peptide = []
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50 for each_entry in coordinates:
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51 chromosome = each_entry[0]
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52 start = int(each_entry[1])
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53 end = int(each_entry[2])
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54 strand = each_entry[4]
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55 cds_start = int(each_entry[5])
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56 cds_end = int(each_entry[6])
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57 pep_pos_start = (acc_seq.find(peptide)*3)
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58 pep_pos_end = pep_pos_start + (len(peptide)*3)
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59 if (pep_pos_start >= cds_start) and (pep_pos_end <= cds_end):
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60 if strand == "+":
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61 pep_start = start + pep_pos_start - cds_start
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62 pep_end = start + pep_pos_end - cds_start
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63 pep_thick_start = 0
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64 pep_thick_end = len(peptide)
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65 flag == 1
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66 else:
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67 pep_end = end - pep_pos_start + cds_start
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68 pep_start = end - pep_pos_end + cds_start
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69 pep_thick_start = 0
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70 pep_thick_end = len(peptide)
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71 flag == 1
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72 spliced_peptide = []
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73 splice_flag = 0
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74 else:
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75 if flag == 0:
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76 if strand == "+":
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77 if (pep_pos_start >= cds_start) and (pep_pos_start <= cds_end) and (pep_pos_end > cds_end):
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78 pep_start = start + pep_pos_start - cds_start
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79 pep_end = end
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80 pep_thick_start = 0
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81 pep_thick_end = (pep_end-pep_start)
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82 spliced_peptide.append([pep_start,pep_end,pep_thick_start,pep_thick_end])
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83 splice_flag = splice_flag + 1
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84 if splice_flag == 2:
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85 flag = 1
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86 elif (pep_pos_end >= cds_start) and (pep_pos_end <= cds_end) and (pep_pos_start < cds_start):
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87 pep_start = start
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88 pep_end = start + pep_pos_end - cds_start
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89 pep_thick_start = (len(peptide)*3)-(pep_end-pep_start)
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90 pep_thick_end = (len(peptide)*3)
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91 spliced_peptide.append([pep_start,pep_end,pep_thick_start,pep_thick_end])
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92 splice_flag = splice_flag + 1
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93 if splice_flag == 2:
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94 flag = 1
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95 else:
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96 pass
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97 else:
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98 if (pep_pos_start >= cds_start) and (pep_pos_start <= cds_end) and (pep_pos_end >= cds_end):
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99 pep_start = start
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100 pep_end = end - pep_pos_start - cds_start
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101 pep_thick_start = 0
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102 pep_thick_end = (pep_end-pep_start)
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103 spliced_peptide.append([pep_start,pep_end,pep_thick_start,pep_thick_end])
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104 splice_flag = splice_flag + 1
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105 if splice_flag == 2:
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106 flag = 1
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107 elif (pep_pos_end >= cds_start) and (pep_pos_end <= cds_end) and (pep_pos_start <= cds_start):
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108 pep_start = end - pep_pos_end + cds_start
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109 pep_end = end
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110 pep_thick_start = (len(peptide)*3)-(pep_end-pep_start)
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111 pep_thick_end = (len(peptide)*3)
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112 spliced_peptide.append([pep_start,pep_end,pep_thick_start,pep_thick_end])
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113 splice_flag = splice_flag + 1
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114 if splice_flag == 2:
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115 flag = 1
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116 else:
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117 pass
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118 if len(spliced_peptide) == 0:
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119 if strand == "+":
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120 bed_line = [chromosome, str(pep_start), str(pep_end), peptide, "255", strand, str(pep_start), str(pep_end), "0", "1", str(pep_end-pep_start), "0"]
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121 else:
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122 bed_line = [chromosome, str(pep_start), str(pep_end), peptide, "255", strand, str(pep_start), str(pep_end), "0", "1", str(pep_end-pep_start), "0"]
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123 outfh.write("\t".join(bed_line)+"\n")
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124 else:
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125 if strand == "+":
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126 pep_entry = spliced_peptide
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127 pep_start = min([pep_entry[0][0], pep_entry[1][0]])
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128 pep_end = max([pep_entry[0][1], pep_entry[1][1]])
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129 blockSize = [str(min([pep_entry[0][3], pep_entry[1][3]])),str(max([pep_entry[0][3], pep_entry[1][3]])-min([pep_entry[0][3], pep_entry[1][3]]))]
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130 blockStarts = ["0", str(pep_end-pep_start-(max([pep_entry[0][3], pep_entry[1][3]])-min([pep_entry[0][3], pep_entry[1][3]])))]
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131 bed_line = [chromosome, str(pep_start), str(pep_end), peptide, "255", strand, str(pep_start), str(pep_end), "0", "2", ",".join(blockSize), ",".join(blockStarts)]
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132 outfh.write("\t".join(bed_line)+"\n")
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133 else:
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134 pep_entry = spliced_peptide
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135 pep_start = min([pep_entry[0][0], pep_entry[1][0]])
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136 pep_end = max([pep_entry[0][1], pep_entry[1][1]])
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137 blockSize = [str(min([pep_entry[0][3], pep_entry[1][3]])),str(max([pep_entry[0][3], pep_entry[1][3]])-min([pep_entry[0][3], pep_entry[1][3]]))]
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138 blockStarts = ["0", str(pep_end-pep_start-(max([pep_entry[0][3], pep_entry[1][3]])-min([pep_entry[0][3], pep_entry[1][3]])))]
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139 bed_line = [chromosome, str(pep_start), str(pep_end), peptide, "255", strand, str(pep_start), str(pep_end), "0", "2", ",".join(blockSize), ",".join(blockStarts)]
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140 outfh.write("\t".join(bed_line)+"\n")
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141 c.execute("DROP table novel")
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142 conn.commit()
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143 conn.close()
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144 conn1.close()
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145 outfh.close()
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146 pepfile.close()
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147
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148 return None
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149 if __name__ == "__main__":
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150 main()