






                                            TABLE








                 Cartesian and cylindrical polar coordinates of atoms in a            

              base-pair repeat in the alfa-form of poly d(A). poly d(T).              

              Successive base-pairs can be generated by adding multiples of           

              36.0 degrees to phi and the same multiple of 0.323 nm to z.             
1




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


            PHOSPHATE   P        0.0377    0.9187    0.2582    0.9195     87.65
                        O1      -0.0546    0.9448    0.1456    0.9464     93.31
                        O2       0.0515    1.0277    0.3574    1.0290     87.13
                        O3      -0.0051    0.7836    0.3325    0.7836     90.37
                        O5       0.1819    0.8794    0.2013    0.8980     78.31


            SUGAR       C1       0.2195    0.5111    0.0672    0.5562     66.76
                        C2       0.2182    0.6362   -0.0200    0.6726     71.07
                        C3       0.3370    0.7028    0.0493    0.7794     64.38
                        C4       0.3127    0.6754    0.1978    0.7443     65.16
                        C5       0.2673    0.7943    0.2802    0.8381     71.40
                        O4       0.2253    0.5631    0.1976    0.6065     68.19
                        H1       0.3110    0.4549    0.0488    0.5510     55.64
                        H12      0.1285    0.6961   -0.0042    0.7079     79.54
                        H22      0.2443    0.6140   -0.1235    0.6608     68.30
                        H3       0.3477    0.8100    0.0334    0.8815     66.77
                        H4       0.4025    0.6326    0.2421    0.7498     57.53
                        H15      0.3544    0.8510    0.3133    0.9218     67.39
                        H25      0.2127    0.7592    0.3677    0.7884     74.35


            ADENINE     N1       0.0582    0.0268    0.0078    0.0641     24.75
                        C2       0.1791    0.0798    0.0259    0.1961     24.01
                        N3       0.2132    0.2059    0.0405    0.2964     44.01
                        C4       0.1046    0.2859    0.0351    0.3044     69.90
                        C5      -0.0248    0.2465    0.0171    0.2477     95.75
                        C6      -0.0484    0.1088    0.0027    0.1191    113.98
                        N6      -0.1704    0.0561   -0.0155    0.1794    161.77
                        N7      -0.1095    0.3565    0.0169    0.3729    107.07
                        C8      -0.0298    0.4573    0.0345    0.4583     93.73
                        N9       0.1016    0.4223    0.0464    0.4344     76.47
                        H2       0.2546    0.0143    0.0289    0.2550      3.22
                        H16     -0.1812   -0.0428   -0.0251    0.1862   -166.70
                        H26     -0.2505    0.1158   -0.0195    0.2760    155.19
                        H8      -0.0617    0.5520    0.0390    0.5554     96.38


            PHOSPHATE   P        0.0523   -0.9597   -0.3113    0.9611    -86.88
                        O1      -0.0495   -0.9839   -0.2066    0.9851    -92.88
                        O2       0.0854   -1.0753   -0.3976    1.0787    -85.46
                        O3       0.0073   -0.8361   -0.4024    0.8361    -89.50
                        O5       0.1859   -0.9026   -0.2443    0.9216    -78.36


            SUGAR       C1       0.2455   -0.5460   -0.0988    0.5986    -65.79
                        C2       0.2676   -0.6694   -0.0121    0.7209    -68.21
                        C3       0.3722   -0.7356   -0.1019    0.8244    -63.16
                        C4       0.3263   -0.7053   -0.2446    0.7771    -65.17
                        C5       0.2762   -0.8240   -0.3244    0.8691    -71.47
                        O4       0.2248   -0.6023   -0.2273    0.6429    -69.53
                        H1       0.3343   -0.4828   -0.0953    0.5872    -55.30
                        H12      0.1783   -0.7319   -0.0083    0.7533    -76.31
                        H22      0.3130   -0.6434    0.0835    0.7155    -64.06
                        H3       0.3832   -0.8433   -0.0894    0.9263    -65.56
                        H4       0.4070   -0.6564   -0.2991    0.7723    -58.20
                        H15      0.3607   -0.8858   -0.3459    0.9564    -67.84
                        H25      0.2242   -0.7887   -0.4135    0.8200    -74.13


            THYMINE     N1       0.1260   -0.4658   -0.0595    0.4826    -74.86
                        C2       0.1413   -0.3295   -0.0538    0.3585    -66.78
                        O2       0.2466   -0.2734   -0.0791    0.3682    -47.95
                        N3       0.0286   -0.2586   -0.0172    0.2602    -83.69
                        C4      -0.0950   -0.3116    0.0135    0.3258   -106.96
                        O4      -0.1888   -0.2380    0.0451    0.3038   -128.42
                        C5      -0.1013   -0.4557    0.0047    0.4668   -102.53
                        ME      -0.2322   -0.5215    0.0364    0.5709   -114.00
                        C6       0.0069   -0.5270   -0.0307    0.5270    -89.25
                        H3       0.0374   -0.1592   -0.0123    0.1635    -76.76
                        H6       0.0003   -0.6266   -0.0362    0.6266    -89.97


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