| Groups | Direct    Repeat No. | Direct    Repeat Sequence | 
      
        | Methanogens | >6M.mazei >17M.acetivorans
 | GTTTCAATCCTTGTTTTAATGGAT------------- GTTTCAATCCTTGTTTTAATGGATCTTGCTCTCGAAT
 | 
      
        | >48M.aeolicus >58M.igneus
 | GTCTAAAAGACACATCCATTAAAACAAGGATGGAAAC -------------ATCCATTAAAACAAGGATGGAAAC
 | 
      
        | >74M.jannaschii >94M.fervens
 | -ATTTCCATTCCGAAACGGTCTGATTTTAAC AATTTCCATTCCGAAACGGTCTGATTTTAAC
 | 
      
        | >85M.jannaschii >100M.FS406-22
 >112M.FS406-22plasmidpFS01G
 | -TTTCCATCCTCCAAGAGGTCTGATTTTAAC-- GTTTCCATCCTCCAAGAGGTCTGATTTTAACA-
 -TTTCCATCCTCCAAGAGGTCTGATTTTAAC--
 | 
      
        | >114M.thermautotrophicus >115M.marburgensis
 | GTTAAAATCAGACCAAAATGGGATTGAAAT GTTAAAATCAGACCAAAATGGGATTGAAAT
 | 
      
        | Thermococci | >293P.abyssi >310P.furiosusCOM1
 >336P.NA2
 >315P.horikoshii
 | CTTTCAATTCTATTTTAGTCTTATTGGAAC CTTTCAATTCTATTTTAGTCTTATTGGAAC
 CTTTCAATTCTATTTTAGTCTTATTGGAAC
 CTTTCAATTCTATTTTAGTCTTATTGGAAC
 | 
      
        | >295P.abyssi >296P.furiosus3638
 | GTTCCAATAAGACTAAAATAGAATTGAAAG GTTCCAATAAGACTAAAATAGAATTGAAAG
 | 
      
        | >328T.onnurineus >333T.kodakarensis
 | GTTTCAATTCTCTTAGAGTCTTATTGCAAC GTTTCAATTCTCTTAGAGTCTTATTGCAAC
 | 
      
        | >331T.gammatolerans >344T.4557
 | GTTGCAATAAGACTCTAGGAGAATTGAAAG GTTGCAATAAGACTCTAGGAGAATTGAAAG
 | 
      
        | >342T.4557 >353T.CL1
 | CTTTCCACACAATTCTGTCCTACGGAAAC CTTTCCACACAATTCTGTCCTACGGAAAC
 | 
      
        | Halophiles | >391N.pharaonis >393N.pharaonisplasmidPL23
 | GTCGAGACGGACTGAAAACCCAGAACGGGATTGAAAC GTCGAGACGGACTGAAAACCCAGAACGGGATTGAAAC
 | 
      
        | Crenarchaeota | >171P.aerophilum >279P.1860
 | GTTTCAACTATCTTTTGATTTCTGG GTTTCAACTATCTTTTGATTTCTGG
 | 
      
        | >172P.aerophilum >278P.1860
 >187P.oguniense
 | CCAGAAATCAAAAGATAGTTGAAAC CCAGAAATCAAAAGATAGTTGAAAC
 CCAGAAATCAAAAGATAGTTGAAAC
 | 
      
        | >189P.oguniense >235T.tenax
 >177P.arsenaticum
 | CTTTCAATCCTCTTTTTGAGATTC CTTTCAATCCTCTTTTTGAGATTC
 CTTTCAATCCTCTTTTTGAGATTC
 | 
      
        | >178P.arsenaticum >188P.oguniense
 | --CAAAATCAAAAGATAGTTGAAAC GTCAAAATCAAAAGATAGTTGAAAC
 | 
      
        | >183P.islandicum >226    P.neutrophilum
 >185P.islandicum
 | GTTTCTACTATCTTTTGATTTCTGG GTTTCTACTATCTTTTGATTTCTGG
 GTTTCTACTATCTTTTGATTTCTG
 | 
      
        | >184P.islandicum >225P.neutrophilum
 | CCAGAAATCAAAAGATAGTAGAAAC CCAGAAATCAAAAGATAGTAGAAAC
 | 
      
        | >210S.solfataricus98/2 >248A.hospitalis
 >258S.M.14.25
 | GATAATCTACTATAGAATTGAAAG GATAATCTACTATAGAATTGAAAG
 GATAATCTACTATAGAATTGAAAG
 |