






                                            TABLE








                 Cartesian and cylindrical polar coordinates of atoms in a            

              base-triplet in the poly (I). poly (A). poly (I) triple-helix.          

              Successive base-triplets can be generated by adding multiples           

              of 30.0 degrees to phi and the same multiple of 0.329 nm to z.          
1




            --------------------------------------------------------------------
             Group      Atom      x(nm)     y(nm)     z(nm)     r(nm)   phi(deg)
            --------------------------------------------------------------------


            PHOSPHATE   P        0.0603   -0.9379    0.1794    0.9398    -86.32
                        O1       0.0603   -1.0547    0.2702    1.0564    -86.73
                        O2      -0.0453   -0.8371    0.2036    0.8383    -93.10
                        O3       0.0535   -0.9875    0.0274    0.9889    -86.90
                        O5       0.2039   -0.8672    0.1831    0.8908    -76.77


            RIBOSE      C1       0.4751   -0.6330    0.0558    0.7915    -53.11
                        C2       0.5451   -0.6462    0.1907    0.8454    -49.85
                        C3       0.4675   -0.7613    0.2545    0.8934    -58.45
                        C4       0.4405   -0.8521    0.1344    0.9592    -62.66
                        C5       0.3203   -0.9435    0.1464    0.9964    -71.25
                        O4       0.4184   -0.7591    0.0244    0.8668    -61.14
                        O2       0.6789   -0.6844    0.1641    0.9640    -45.23


            INOSINE     N1       0.3602   -0.1444    0.0061    0.3881    -21.84
                        C2       0.4811   -0.2065    0.0010    0.5235    -23.23
                        N3       0.4996   -0.3348    0.0153    0.6014    -33.83
                        C4       0.3837   -0.4006    0.0361    0.5547    -46.23
                        C5       0.2601   -0.3437    0.0422    0.4310    -52.88
                        C6       0.2380   -0.2075    0.0273    0.3158    -41.08
                        O6       0.1335   -0.1435    0.0304    0.1960    -47.08
                        N7       0.1637   -0.4396    0.0647    0.4691    -69.57
                        C8       0.2333   -0.5532    0.0717    0.6004    -67.13
                        N9       0.3659   -0.5318    0.0547    0.6455    -55.47


            PHOSPHATE   P        0.0826    0.9497   -0.1729    0.9533     85.03
                        O1      -0.0267    0.8544   -0.2026    0.8548     91.79
                        O2       0.0910    1.0679   -0.2616    1.0718     85.13
                        O3       0.0720    0.9976   -0.0206    1.0002     85.87
                        O5       0.2228    0.8728   -0.1723    0.9008     75.68


            RIBOSE      C1       0.4871    0.6298   -0.0530    0.7962     52.28
                        C2       0.5590    0.6430   -0.1868    0.8520     49.00
                        C3       0.4856    0.7613   -0.2496    0.9030     57.47
                        C4       0.4599    0.8510   -0.1284    0.9673     61.61
                        C5       0.3425    0.9461   -0.1402    1.0062     70.10
                        O4       0.4337    0.7570   -0.0201    0.8724     60.19
                        O2       0.6936    0.6768   -0.1581    0.9691     44.30


            ADENINE     N1       0.3566    0.1356   -0.0034    0.3815     20.82
                        C2       0.4733    0.1994    0.0036    0.5136     22.84
                        N3       0.4989    0.3276   -0.0014    0.5968     33.29
                        C4       0.3857    0.3966   -0.0349    0.5532     45.80
                        C5       0.2590    0.3466   -0.0451    0.4327     53.23
                        C6       0.2435    0.2081   -0.0284    0.3203     40.52
                        N6       0.1251    0.1456   -0.0358    0.1919     49.33
                        N7       0.1685    0.4486   -0.0711    0.4792     69.41
                        C8       0.2420    0.5553   -0.0757    0.6058     66.45
                        N9       0.3748    0.5318   -0.0547    0.6506     54.82


            PHOSPHATE   P       -0.9282    0.2292   -0.3073    0.9561    166.13
                        O1      -1.0342    0.2481   -0.4089    1.0635    166.51
                        O2      -0.8396    0.1123   -0.3274    0.8471    172.38
                        O3      -0.9938    0.2225   -0.1615    1.0184    167.38
                        O5      -0.8400    0.3623   -0.2962    0.9148    156.67


            RIBOSE      C1      -0.5917    0.6149   -0.1706    0.8534    133.90
                        C2      -0.5844    0.6814   -0.3077    0.8977    130.62
                        C3      -0.7004    0.6138   -0.3808    0.9313    138.77
                        C4      -0.8047    0.6002   -0.2698    1.0039    143.28
                        C5      -0.9066    0.4896   -0.2881    1.0304    151.63
                        O4      -0.7257    0.5723   -0.1506    0.9242    141.74
                        O2      -0.6109    0.8192   -0.2880    1.0219    126.71


            INOSINE     N1      -0.1210    0.4532   -0.0889    0.4691    104.95
                        C2      -0.1698    0.5800   -0.0952    0.6043    106.32
                        N3      -0.2947    0.6107   -0.1171    0.6781    115.76
                        C4      -0.3717    0.5012   -0.1332    0.6240    126.56
                        C5      -0.3283    0.3722   -0.1279    0.4963    131.41
                        C6      -0.1960    0.3370   -0.1048    0.3899    120.18
                        O6      -0.1437    0.2264   -0.0975    0.2682    122.41
                        N7      -0.4330    0.2851   -0.1486    0.5184    146.64
                        C8      -0.5380    0.3655   -0.1659    0.6504    145.81
                        N9      -0.5031    0.4960   -0.1570    0.7065    135.41


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