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Table 4 Position of ribosomal genes and internal transcribed spacers in the partially sequenced transcription unit of Haplorchis pumilio (4,943 bp) and H. taichui (4,796 bp)

From: The ribosomal transcription units of Haplorchis pumilio and H. taichui and the use of 28S rDNA sequences for phylogenetic identification of common heterophyids in Vietnam

Gene/region Position (5'–3') Repeat Size (bp) Intergenic spacer (bp) Note
H. pumilio      GenBank: KX815125
18S 1–1992   1,992 0  
ITS1 1993–3098   1,106 +66 66 bp to TRA1
  2059–2194 TRA1 136 0 Tandem
  2195–2330 TRA2 136 0 Tandem
  2331–2466 TRA3 136 -91 Overlap with TRB1
  2376–2498 TRB1 123 0 Tandem
  2499–2621 TRB2 123 0 Tandem
  2622–2705 TRB3 (partial) 84 +393 393 bp to 5.8S
5.8S 3099–3258   160 0  
ITS2 3259–3546   288 0 No repeats
28S 3547–4943   1,397   5' partial sequence
H. taichui      GenBank: KX815126
18S 1–1992   1,992 0  
ITS1 1993–2779   797 0 No repeats
5.8S 2790–2949   160 0  
ITS2 2950–3393   444 +121 121 bp to TR1
  3071–3155 TR1 85 0 Tandem
  3156–3238 TR2 83 0 Tandem
  3239–3323 TR3 85 +70 Tandem
28S 3394–4796   1,403   5' partial sequence