DX Molecules

Here the DNA sequences are displayed to indicate the intended DX secondary structure. This makes it easy to examine the sticky ends presented by each DX molecule. (Note: As this paper was being prepared, we noticed a two base mismatch in unit C of ABCD-hat.) 5' and 3' ends are marked (where possible), and the following punctuation is used:

        /      indicates a hairpin
        \

    TAC\/AGT   indicates a half-turn of strands TACTCA and TGAGTA
    ATG/\TCA

     - and |   indicate continuation of a strand

       :       indicates continuation from the opposite side of the helix



DAO-E AB lattice, Fig. 3a

 unit A

       3                                  3                    
  5    GATGGCGT-CCGTTTAC\/AGTCGAGG-ACGGATCG    5               
  TCACTCTACCGCA GGCAAATG/\TCAGCTCC TGCCTAGCTCACT    
              | |                | |                
  TAGAGGTAAGACC TGCGGTAT\/AGATAGCA GGCTACTGGAGAT               
  3    CATTCTGG-ACGCCATA/\TCTATCGT-CCGATGAC    3               
       5                                  5                    
                                                               
 unit B
                                                               
       5                                  5                    
  3    GCGGTTGT-CCAACTTA\/GGTCTAGG-ACATCTCG    3               
  CTCTACGCCAACA GGTTGAAT/\CCAGATCC TGTAGAGCATCTC      
              | |                | |                 
  AGTGAGGCAATCC TGTAACGT\/GCCGAACA GGCAAGCGAGTGA               
  5    CCGTTAGG-ACATTGCA/\CGGCTTGT-CCGTTCGC    5               
       3                                  3                    


DAO-E AB-hat lattice, Figs. 3b and 3c

 unit A

       3                                  3                    
  5    GATGGCGT-CCGTTTAC\/AGTCGAGG-ACGGATCG    5               
  TCACTCTACCGCA GGCAAATG/\TCAGCTCC TGCCTAGCCATAC
              | |                | |                
  TAGAGGTAAGACC TGCGGTAT\/AGATAGCA GGCTACTGTCTTG
  3    CATTCTGG-ACGCCATA/\TCTATCGT-CCGATGAC    3               
       5                                  5                    

 unit B-hat

           /TTTCGCTAGGTT    TTGCATCGTCTT\  
           \TTAGCGATCC |    | CGTAGCAGTT/                                  
       5             | |    | |             5                    
  3    GCGGTTGT-CCAACT TA\/GG TCTAGG-ACATCTCG    3               
  CTCTACGCCAACA GGTTGA-AT/\CC-AGATCC TGTAGAGCCAAGA
              | |                | |                 
  AGTGAGGCAATCC TGTAAC-GT\/GC-CGAACA GGCAAGCGGTATG
  5    CCGTTAGG-ACATTG-CA/\CG-GCTTGT-CCGTTCGC    5               
       3                                  3                    


DAO-E AB-hat lattice, Figs. 4a, 4b, 4c

 unit A

       3                                  3                    
  5    GATGGCGT-CCGTTTAC\/AGTCGAGG-ACGGATCG    5               
  TCACTCTACCGCA GGCAAATG/\TCAGCTCC TGCCTAGCTCACT    
              | |                | |                
  TAGAGGTAAGACC TGCGGTAT\/AGATAGCA GGCTACTGGAGAT               
  3    CATTCTGG-ACGCCATA/\TCTATCGT-CCGATGAC    3               
       5                                  5                    

 unit B-hat

           /TTTCGCTAGGTT    TTGCATCGTCTT\  
           \TTAGCGATCC |    | CGTAGCAGTT/                                  
       5             | |    | |             5                    
  3    GCGGTTGT-CCAACT TA\/GG TCTAGG-ACATCTCG    3               
  CTCTACGCCAACA GGTTGA-AT/\CC-AGATCC TGTAGAGCATCTC
              | |                | |                 
  AGTGAGGCAATCC TGTAAC-GT\/GC-CGAACA GGCAAGCGAGTGA
  5    CCGTTAGG-ACATTG-CA/\CG-GCTTGT-CCGTTCGC    5               
       3                                  3                    


DAE-O AB lattice, Figs. 2 and 3d  

 unit A

    5                                               3
    GATGGCGACATCC-TGCCGCT-ATGATTACACAGCC-TGAGCATTGACC      5
          CTGTAGG ACGGCGA-TACTAATGTGTCGG ACTCGTAACTGGCGTCAGC
                | |                    | |
   GTAGCGCCGTTAGT CCAACTG GCATGTAGTATCGT CCGATCAACCAG
   5     GGCAATCA-GGTTGAC-CGTACATCATAGCA-GGCTAGTTGGTCGCAGTC
         3                                                5 

 unit B

         3                                                5  
   5     CGACGACA-GGCTACG-CCAGTGACCAATCA-GGTACTACGTGCCATCGC
   CGTCAGGCTGCTGT CCGATGC GGTCACTGGTTAGT CCATGATGCACG
                | |                    | |
          GTGCTGG ACCGCAA-CATGATGCGTTAGG ACGGCATAGCTGCCTACCG
   GCAGTCGCACGACC-TGGCGTT-GTACTACGCAATCC-TGCCGTATCGACG     5
   5                                                 3


DAE-O AB-hat lattice, Fig. 3e

 unit A

    5                                                3
    GATGGCGACATCC-TGCCGCT-ATGATTACACAGCC-TGAGCATTGACAC     5
          CTGTAGG ACGGCGA-TACTAATGTGTCGG ACTCGTAACTGTGCGTCAG
                | |                    | |
   GTAGCGCCGTTAGT CCAACTG GCATGTAGTATCGT CCGATCAACCAG
   5     GGCAATCA-GGTTGAC-CGTACATCATAGCA-GGCTAGTTGGTCGCAGTC
         3                                                5 

 unit B-hat

         3                                                5  
   5     CGACGACA-GGCTACGCCAG--TGACCAATCA-GGTACTACGTGCCATCGC
   CGTCAGGCTGCTGT CCGATGCGGTC  ACTGGTTAGT CCATGATGCACG
                | |                     | |
         CGTGCTGG ACCGCA-ACAT GATGCGTTAGG ACGGCATAGCTGCCTACCG
   GCAGTCGCACGACC-TGGCGT TGTA-CTACGCAATCC-TGCCGTATCGACG     5
   5                   | |  : :                       3
             /TTCGGTTGTC |  : GCGAGTAGTT\
             \TTGCCAACAGTT  TTCGCTCATCTT/


DAE-O AB-hat lattice, Fig. 3f

 unit A

    5                                                3
    GATGGCGACATCC-TGCCGCT-ATGATTACACAGCC-TGAGCATTGACAC     5
          CTGTAGG ACGGCGA-TACTAATGTGTCGG ACTCGTAACTGTGCGTCAG
                | |                    | |
   GTAGCGCCGTTAGT CCAACTG GCATGTAGTATCGT CCGATCAACCAG
   5     GGCAATCA-GGTTGAC-CGTACATCATAGCA-GGCTAGTTGGTCGCAGTC
         3                                                5 

 unit B-hat
                           TTGAGCGACTTT\
                           | CTCGCTGATT/
         3                 | |                             5  
   5     CGACGACA-GGCTACGCCA GT-GACCAATCA-GGTACTACGTGCCATCGC
   CGTCAGGCTGCTGT CCGATGCGGT-CA-CTGGTTAGT CCATGATGCACG
                | |                     | |
         CGTGCTGG ACCGCA-ACATGA TGCGTTAGG ACGGCATAGCTGCCTACCG
   GCAGTCGCACGACC-TGGCGT TGTACT-ACGCAATCC-TGCCGTATCGACG     5
   5                   | |                            3
             /TTCGGTTGTC |  
             \TTGCCAACAGTT  


DAE-O ABCD-hat lattice, Figs 4e and 4f.

 unit A

    5                                               3
    ACTATGCTAGTCC-TGTATGTCAT-GCCGTTGTGCC-TGAGCACCAGTCG     5
          GATCAGG ACATACAGTA-CGGCAACACGG ACTCGTGGTCAGCCGTCAG
                | |                    | |
   CACAGCGGTAGCGT CCGATACGAT GCAGTACGTGT CCGTAGTTGCTG
   5     CCATCGCA-GGCTATGCTA-CGTCATGCACA-GGCATCAACGACGCAGTC
         3                                                5

 unit B

          3                                                5
    5     CGTTAGCA-GGCTACGCCA-TGTATGCGTCA-GGTCAACATAGCGTGTCG
    CAACGAGCAATCGT CCGATGCGGT ACATACGCAGT CCAGTTGTATCG
                 | |                    | |
          GCCGTCGG ACATTGCCAA-CCAGCGATAGG ACTACTGTGATGCTGATAC
    TGAACTCGGCAGCC-TGTAACGGTT-GGTCGCTATCC-TGATGACACTACG     5
    5                                                 3

 unit C

    5                                                3
    GATGGCGACATCC-TGCCGCT-ATGATTACACAGCC-TGAGCATTGACAC     5
          CTGTAGG ACGGCGA-TACTAATGTGTCGG ACTCGTAACTGGCACTTGA
                | |                    | |
   GTAGCGCCGTTAGT CCAACTGGCA TGTAGTATCGT CCGATCAACCAG
   5     GGCAATCA-GGTTGACCGT-ACATCATAGCA-GGCTAGTTGGTCGTTGCT
         3                                                5 

 unit D-hat
                           TTGAGCGACTTT\
                           | CTCGCTGATT/
         3                 | |                             5  
   5     CGACGACA-GGCTACGCCA GT-GACCAATCA-GGTACTACGTGCCATCGC
   CGTCAGGCTGCTGT CCGATGCGGT-CA-CTGGTTAGT CCATGATGCACG
                | |                     | |
         CGTGCTGG ACCGCA-ACATGA TGCGTTAGG ACGGCATAGCTGCCTACCG
   GCAGTCGCACGACC-TGGCGT TGTACT-ACGCAATCC-TGCCGTATCGACG     5
   5                   | |                            3
             /TTCGGTTGTC |  
             \TTGCCAACAGTT