1 | #!/usr/bin/env python |
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2 | #Guruprasad Ananda |
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3 | """ |
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4 | Uses SPUTNIK to fetch microsatellites and extracts orthologous repeats from the sputnik output. |
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5 | """ |
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6 | from galaxy import eggs |
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7 | import sys, os, tempfile, string, math, re |
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8 | |
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9 | def reverse_complement(text): |
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10 | DNA_COMP = string.maketrans( "ACGTacgt", "TGCAtgca" ) |
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11 | comp = [ch for ch in text.translate(DNA_COMP)] |
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12 | comp.reverse() |
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13 | return "".join(comp) |
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14 | |
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15 | def main(): |
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16 | if len(sys.argv) != 8: |
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17 | print >>sys.stderr, "Insufficient number of arguments." |
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18 | sys.exit() |
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19 | |
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20 | infile = open(sys.argv[1],'r') |
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21 | separation = int(sys.argv[2]) |
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22 | outfile = sys.argv[3] |
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23 | align_type = sys.argv[4] |
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24 | if align_type == "2way": |
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25 | align_type_len = 2 |
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26 | elif align_type == "3way": |
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27 | align_type_len = 3 |
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28 | mono_threshold = int(sys.argv[5]) |
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29 | non_mono_threshold = int(sys.argv[6]) |
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30 | allow_different_units = int(sys.argv[7]) |
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31 | |
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32 | print "Min distance = %d bp; Min threshold for mono repeats = %d; Min threshold for non-mono repeats = %d; Allow different motifs = %s" %(separation, mono_threshold, non_mono_threshold, allow_different_units==1) |
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33 | try: |
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34 | fout = open(outfile, "w") |
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35 | print >>fout, "#Block\tSeq1_Name\tSeq1_Start\tSeq1_End\tSeq1_Type\tSeq1_Length\tSeq1_RepeatNumber\tSeq1_Unit\tSeq2_Name\tSeq2_Start\tSeq2_End\tSeq2_Type\tSeq2_Length\tSeq2_RepeatNumber\tSeq2_Unit" |
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36 | #sputnik_cmd = os.path.join(os.path.split(sys.argv[0])[0], "sputnik") |
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37 | sputnik_cmd = "sputnik" |
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38 | input = infile.read() |
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39 | skipped = 0 |
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40 | block_num = 0 |
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41 | input = input.replace('\r','\n') |
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42 | for block in input.split('\n\n'): |
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43 | block_num += 1 |
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44 | tmpin = tempfile.NamedTemporaryFile() |
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45 | tmpout = tempfile.NamedTemporaryFile() |
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46 | tmpin.write(block.strip()) |
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47 | blk = tmpin.read() |
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48 | cmdline = sputnik_cmd + " " + tmpin.name + " > /dev/null 2>&1 >> " + tmpout.name |
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49 | try: |
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50 | os.system(cmdline) |
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51 | except Exception, es: |
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52 | continue |
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53 | sputnik_out = tmpout.read() |
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54 | tmpin.close() |
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55 | tmpout.close() |
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56 | if sputnik_out != "": |
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57 | if len(block.split('>')[1:]) != 2: #len(sputnik_out.split('>')): |
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58 | skipped += 1 |
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59 | continue |
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60 | align_block = block.strip().split('>') |
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61 | |
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62 | lendict = {'mononucleotide':1, 'dinucleotide':2, 'trinucleotide':3, 'tetranucleotide':4, 'pentanucleotide':5, 'hexanucleotide':6} |
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63 | blockdict={} |
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64 | r=0 |
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65 | namelist=[] |
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66 | for k,sput_block in enumerate(sputnik_out.split('>')[1:]): |
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67 | whole_seq = ''.join(align_block[k+1].split('\n')[1:]).replace('\n','').strip() |
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68 | p = re.compile('\n(\S*nucleotide)') |
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69 | repeats = p.split(sput_block.strip()) |
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70 | repeats_count = len(repeats) |
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71 | j = 1 |
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72 | name = repeats[0].strip() |
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73 | try: |
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74 | coords = re.search('\d+[-_:]\d+',name).group() |
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75 | coords = coords.replace('_','-').replace(':','-') |
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76 | except Exception, e: |
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77 | coords = '0-0' |
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78 | pass |
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79 | r += 1 |
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80 | blockdict[r]={} |
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81 | try: |
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82 | sp_name = name[:name.index('.')] |
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83 | chr_name = name[name.index('.'):name.index('(')] |
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84 | namelist.append(sp_name + chr_name) |
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85 | except: |
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86 | namelist.append(name[:20]) |
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87 | while j < repeats_count: |
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88 | try: |
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89 | if repeats[j].strip() not in lendict: |
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90 | j += 2 |
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91 | continue |
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92 | |
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93 | if blockdict[r].has_key('types'): |
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94 | blockdict[r]['types'].append(repeats[j].strip()) #type of microsat |
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95 | else: |
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96 | blockdict[r]['types'] = [repeats[j].strip()] #type of microsat |
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97 | |
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98 | sequence = ''.join(align_block[r].split('\n')[1:]).replace('\n','').strip() |
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99 | start = int(repeats[j+1].split('--')[0].split(':')[0].strip()) |
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100 | #check to see if there are gaps before the start of the repeat, and change the start accordingly |
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101 | sgaps = 0 |
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102 | ch_pos = start - 1 |
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103 | while ch_pos >= 0: |
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104 | if whole_seq[ch_pos] == '-': |
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105 | sgaps += 1 |
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106 | else: |
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107 | break #break at the 1st non-gap character |
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108 | ch_pos -= 1 |
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109 | if blockdict[r].has_key('starts'): |
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110 | blockdict[r]['starts'].append(start+sgaps) #start co-ords adjusted with alignment co-ords to include GAPS |
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111 | else: |
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112 | blockdict[r]['starts'] = [start+sgaps] |
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113 | |
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114 | end = int(repeats[j+1].split('--')[0].split(':')[1].strip()) |
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115 | #check to see if there are gaps after the end of the repeat, and change the end accordingly |
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116 | egaps = 0 |
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117 | for ch in whole_seq[end:]: |
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118 | if ch == '-': |
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119 | egaps += 1 |
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120 | else: |
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121 | break #break at the 1st non-gap character |
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122 | if blockdict[r].has_key('ends'): |
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123 | blockdict[r]['ends'].append(end+egaps) #end co-ords adjusted with alignment co-ords to include GAPS |
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124 | else: |
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125 | blockdict[r]['ends'] = [end+egaps] |
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126 | |
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127 | repeat_seq = ''.join(repeats[j+1].replace('\r','\n').split('\n')[1:]).strip() #Repeat Sequence |
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128 | repeat_len = repeats[j+1].split('--')[1].split()[1].strip() |
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129 | gap_count = repeat_seq.count('-') |
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130 | #print repeats[j+1].split('--')[1], len(repeat_seq), repeat_len, gap_count |
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131 | repeat_len = str(int(repeat_len) - gap_count) |
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132 | |
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133 | rel_start = blockdict[r]['starts'][-1] |
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134 | gaps_before_start = whole_seq[:rel_start].count('-') |
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135 | |
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136 | if blockdict[r].has_key('gaps_before_start'): |
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137 | blockdict[r]['gaps_before_start'].append(gaps_before_start) #lengths |
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138 | else: |
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139 | blockdict[r]['gaps_before_start'] = [gaps_before_start] #lengths |
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140 | |
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141 | whole_seq_start= int(coords.split('-')[0]) |
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142 | if blockdict[r].has_key('whole_seq_start'): |
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143 | blockdict[r]['whole_seq_start'].append(whole_seq_start) #lengths |
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144 | else: |
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145 | blockdict[r]['whole_seq_start'] = [whole_seq_start] #lengths |
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146 | |
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147 | if blockdict[r].has_key('lengths'): |
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148 | blockdict[r]['lengths'].append(repeat_len) #lengths |
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149 | else: |
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150 | blockdict[r]['lengths'] = [repeat_len] #lengths |
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151 | |
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152 | if blockdict[r].has_key('counts'): |
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153 | blockdict[r]['counts'].append(str(int(repeat_len)/lendict[repeats[j].strip()])) #Repeat Unit |
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154 | else: |
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155 | blockdict[r]['counts'] = [str(int(repeat_len)/lendict[repeats[j].strip()])] #Repeat Unit |
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156 | |
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157 | if blockdict[r].has_key('units'): |
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158 | blockdict[r]['units'].append(repeat_seq[:lendict[repeats[j].strip()]]) #Repeat Unit |
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159 | else: |
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160 | blockdict[r]['units'] = [repeat_seq[:lendict[repeats[j].strip()]]] #Repeat Unit |
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161 | |
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162 | except Exception, eh: |
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163 | pass |
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164 | j+=2 |
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165 | #check the co-ords of all repeats corresponding to a sequence and remove adjacent repeats separated by less than the user-specified 'separation'. |
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166 | delete_index_list = [] |
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167 | for ind, item in enumerate(blockdict[r]['ends']): |
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168 | try: |
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169 | if blockdict[r]['starts'][ind+1]-item < separation: |
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170 | if ind not in delete_index_list: |
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171 | delete_index_list.append(ind) |
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172 | if ind+1 not in delete_index_list: |
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173 | delete_index_list.append(ind+1) |
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174 | except Exception, ek: |
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175 | pass |
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176 | for index in delete_index_list: #mark them for deletion |
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177 | try: |
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178 | blockdict[r]['starts'][index] = 'marked' |
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179 | blockdict[r]['ends'][index] = 'marked' |
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180 | blockdict[r]['types'][index] = 'marked' |
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181 | blockdict[r]['gaps_before_start'][index] = 'marked' |
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182 | blockdict[r]['whole_seq_start'][index] = 'marked' |
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183 | blockdict[r]['lengths'][index] = 'marked' |
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184 | blockdict[r]['counts'][index] = 'marked' |
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185 | blockdict[r]['units'][index] = 'marked' |
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186 | except Exception, ej: |
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187 | pass |
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188 | #remove 'marked' elements from all the lists |
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189 | """ |
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190 | for key in blockdict[r].keys(): |
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191 | for elem in blockdict[r][key]: |
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192 | if elem == 'marked': |
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193 | blockdict[r][key].remove(elem) |
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194 | """ |
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195 | #print blockdict |
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196 | |
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197 | #make sure that the blockdict has keys for both the species |
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198 | if (1 not in blockdict) or (2 not in blockdict): |
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199 | continue |
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200 | |
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201 | visited_2 = [0 for x in range(len(blockdict[2]['starts']))] |
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202 | for ind1,coord_s1 in enumerate(blockdict[1]['starts']): |
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203 | if coord_s1 == 'marked': |
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204 | continue |
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205 | coord_e1 = blockdict[1]['ends'][ind1] |
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206 | out = [] |
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207 | for ind2,coord_s2 in enumerate(blockdict[2]['starts']): |
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208 | if coord_s2 == 'marked': |
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209 | visited_2[ind2] = 1 |
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210 | continue |
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211 | coord_e2 = blockdict[2]['ends'][ind2] |
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212 | #skip if the 2 repeats are not of the same type or don't have the same repeating unit. |
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213 | if allow_different_units == 0: |
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214 | if (blockdict[1]['types'][ind1] != blockdict[2]['types'][ind2]): |
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215 | continue |
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216 | else: |
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217 | if (blockdict[1]['units'][ind1] not in blockdict[2]['units'][ind2]*2) and (reverse_complement(blockdict[1]['units'][ind1]) not in blockdict[2]['units'][ind2]*2): |
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218 | continue |
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219 | #print >>sys.stderr, (reverse_complement(blockdict[1]['units'][ind1]) not in blockdict[2]['units'][ind2]*2) |
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220 | #skip if the repeat number thresholds are not met |
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221 | if blockdict[1]['types'][ind1] == 'mononucleotide': |
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222 | if (int(blockdict[1]['counts'][ind1]) < mono_threshold): |
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223 | continue |
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224 | else: |
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225 | if (int(blockdict[1]['counts'][ind1]) < non_mono_threshold): |
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226 | continue |
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227 | |
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228 | if blockdict[2]['types'][ind2] == 'mononucleotide': |
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229 | if (int(blockdict[2]['counts'][ind2]) < mono_threshold): |
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230 | continue |
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231 | else: |
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232 | if (int(blockdict[2]['counts'][ind2]) < non_mono_threshold): |
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233 | continue |
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234 | #print "s1,e1=%s,%s; s2,e2=%s,%s" %(coord_s1,coord_e1,coord_s2,coord_e2) |
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235 | if (coord_s1 in range(coord_s2,coord_e2)) or (coord_e1 in range(coord_s2,coord_e2)): |
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236 | out.append(str(block_num)) |
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237 | out.append(namelist[0]) |
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238 | rel_start = blockdict[1]['whole_seq_start'][ind1] + coord_s1 - blockdict[1]['gaps_before_start'][ind1] |
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239 | rel_end = rel_start + int(blockdict[1]['lengths'][ind1]) |
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240 | out.append(str(rel_start)) |
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241 | out.append(str(rel_end)) |
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242 | out.append(blockdict[1]['types'][ind1]) |
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243 | out.append(blockdict[1]['lengths'][ind1]) |
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244 | out.append(blockdict[1]['counts'][ind1]) |
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245 | out.append(blockdict[1]['units'][ind1]) |
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246 | out.append(namelist[1]) |
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247 | rel_start = blockdict[2]['whole_seq_start'][ind2] + coord_s2 - blockdict[2]['gaps_before_start'][ind2] |
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248 | rel_end = rel_start + int(blockdict[2]['lengths'][ind2]) |
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249 | out.append(str(rel_start)) |
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250 | out.append(str(rel_end)) |
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251 | out.append(blockdict[2]['types'][ind2]) |
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252 | out.append(blockdict[2]['lengths'][ind2]) |
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253 | out.append(blockdict[2]['counts'][ind2]) |
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254 | out.append(blockdict[2]['units'][ind2]) |
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255 | print >>fout, '\t'.join(out) |
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256 | visited_2[ind2] = 1 |
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257 | out=[] |
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258 | |
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259 | if 0 in visited_2: #there are still some elements in 2nd set which haven't found orthologs yet. |
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260 | for ind2, coord_s2 in enumerate(blockdict[2]['starts']): |
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261 | if coord_s2 == 'marked': |
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262 | continue |
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263 | if visited_2[ind] != 0: |
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264 | continue |
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265 | coord_e2 = blockdict[2]['ends'][ind2] |
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266 | out = [] |
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267 | for ind1,coord_s1 in enumerate(blockdict[1]['starts']): |
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268 | if coord_s1 == 'marked': |
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269 | continue |
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270 | coord_e1 = blockdict[1]['ends'][ind1] |
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271 | #skip if the 2 repeats are not of the same type or don't have the same repeating unit. |
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272 | if allow_different_units == 0: |
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273 | if (blockdict[1]['types'][ind1] != blockdict[2]['types'][ind2]): |
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274 | continue |
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275 | else: |
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276 | if (blockdict[1]['units'][ind1] not in blockdict[2]['units'][ind2]*2):# and reverse_complement(blockdict[1]['units'][ind1]) not in blockdict[2]['units'][ind2]*2: |
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277 | continue |
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278 | #skip if the repeat number thresholds are not met |
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279 | if blockdict[1]['types'][ind1] == 'mononucleotide': |
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280 | if (int(blockdict[1]['counts'][ind1]) < mono_threshold): |
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281 | continue |
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282 | else: |
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283 | if (int(blockdict[1]['counts'][ind1]) < non_mono_threshold): |
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284 | continue |
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285 | |
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286 | if blockdict[2]['types'][ind2] == 'mononucleotide': |
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287 | if (int(blockdict[2]['counts'][ind2]) < mono_threshold): |
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288 | continue |
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289 | else: |
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290 | if (int(blockdict[2]['counts'][ind2]) < non_mono_threshold): |
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291 | continue |
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292 | |
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293 | if (coord_s2 in range(coord_s1,coord_e1)) or (coord_e2 in range(coord_s1,coord_e1)): |
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294 | out.append(str(block_num)) |
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295 | out.append(namelist[0]) |
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296 | rel_start = blockdict[1]['whole_seq_start'][ind1] + coord_s1 - blockdict[1]['gaps_before_start'][ind1] |
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297 | rel_end = rel_start + int(blockdict[1]['lengths'][ind1]) |
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298 | out.append(str(rel_start)) |
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299 | out.append(str(rel_end)) |
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300 | out.append(blockdict[1]['types'][ind1]) |
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301 | out.append(blockdict[1]['lengths'][ind1]) |
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302 | out.append(blockdict[1]['counts'][ind1]) |
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303 | out.append(blockdict[1]['units'][ind1]) |
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304 | out.append(namelist[1]) |
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305 | rel_start = blockdict[2]['whole_seq_start'][ind2] + coord_s2 - blockdict[2]['gaps_before_start'][ind2] |
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306 | rel_end = rel_start + int(blockdict[2]['lengths'][ind2]) |
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307 | out.append(str(rel_start)) |
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308 | out.append(str(rel_end)) |
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309 | out.append(blockdict[2]['types'][ind2]) |
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310 | out.append(blockdict[2]['lengths'][ind2]) |
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311 | out.append(blockdict[2]['counts'][ind2]) |
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312 | out.append(blockdict[2]['units'][ind2]) |
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313 | print >>fout, '\t'.join(out) |
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314 | visited_2[ind2] = 1 |
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315 | out=[] |
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316 | |
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317 | #print >>fout, blockdict |
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318 | except Exception, exc: |
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319 | print >>sys.stderr, "type(exc),args,exc: %s, %s, %s" %(type(exc), exc.args, exc) |
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320 | |
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321 | if __name__ == "__main__": |
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322 | main() |
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323 | |
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