






                                            TABLE








                 Cartesian and cylindrical polar coordinates of atoms in a            

              base-pair in the A-form of poly (A). poly d(T) duplex.  Successive      

              base-pairs can be generated by adding multiples of 32.7 degrees         

              to phi and the same multiple of 0.256 nm to z.                          
1




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


            PHOSPHATE   P        0.3369    0.8352   -0.3997    0.9006     68.03
                        O1       0.2309    0.7421   -0.4442    0.7772     72.72
                        O2       0.3954    0.9220   -0.5043    1.0032     66.79
                        O3       0.2824    0.9253   -0.2794    0.9675     73.03
                        O5       0.4535    0.7529   -0.3271    0.8789     58.94


            RIBOSE      C1       0.7060    0.4968   -0.1959    0.8633     35.13
                        C2       0.7486    0.4749   -0.3407    0.8865     32.39
                        C3       0.6779    0.5905   -0.4113    0.8991     41.06
                        C4       0.6897    0.7028   -0.3082    0.9847     45.54
                        C5       0.5845    0.8117   -0.3169    1.0002     54.24
                        O4       0.6763    0.6346   -0.1802    0.9274     43.18
                        O2       0.8892    0.4917   -0.3453    1.0161     28.94
                        H1       0.7887    0.4715   -0.1295    0.9189     30.87
                        H2       0.7082    0.3802   -0.3766    0.8038     28.23
                        H3       0.5728    0.5666   -0.4272    0.8057     44.69
                        H4       0.7889    0.7476   -0.3143    1.0868     43.46
                        H15      0.6036    0.8736   -0.4046    1.0618     55.36
                        H25      0.5894    0.8742   -0.2277    1.0544     56.01


            ADENINE     N1       0.5320    0.0469   -0.0198    0.5340      5.04
                        C2       0.6542    0.0918   -0.0476    0.6607      7.99
                        N3       0.6911    0.2096   -0.0929    0.7222     16.87
                        C4       0.5841    0.2898   -0.1108    0.6520     26.39
                        C5       0.4534    0.2580   -0.0869    0.5217     29.64
                        C6       0.4269    0.1289   -0.0386    0.4459     16.80
                        N6       0.3035    0.0842   -0.0108    0.3150     15.50
                        N7       0.3711    0.3655   -0.1169    0.5209     44.57
                        C8       0.4530    0.4575   -0.1574    0.6439     45.28
                        N9       0.5852    0.4188   -0.1566    0.7197     35.59
                        H2       0.7285    0.0267   -0.0318    0.7290      2.10
                        H16      0.2906   -0.0089    0.0234    0.2907     -1.75
                        H26      0.2245    0.1439   -0.0243    0.2667     32.67
                        H8       0.4231    0.5484   -0.1867    0.6926     52.35


            PHOSPHATE   P        0.3369   -0.8352    0.3997    0.9006    -68.03
                        O1       0.2309   -0.7421    0.4442    0.7772    -72.72
                        O2       0.3954   -0.9220    0.5043    1.0032    -66.79
                        O3       0.2824   -0.9253    0.2794    0.9675    -73.03
                        O5       0.4535   -0.7529    0.3271    0.8789    -58.94


            SUGAR       C1       0.7060   -0.4968    0.1959    0.8633    -35.13
                        C2       0.7486   -0.4749    0.3407    0.8865    -32.39
                        C3       0.6779   -0.5905    0.4113    0.8991    -41.06
                        C4       0.6909   -0.7041    0.3082    0.9865    -45.54
                        C5       0.5845   -0.8117    0.3169    1.0002    -54.24
                        O4       0.6763   -0.6346    0.1802    0.9274    -43.18
                        H1       0.7887   -0.4715    0.1295    0.9189    -30.87
                        H12      0.9131   -0.5838    0.3984    1.0838    -32.59
                        H22      0.7082    0.3802   -0.3766    0.8038     28.23
                        H3       0.5728   -0.5666    0.4272    0.8057    -44.69
                        H4       0.7889   -0.7476    0.3143    1.0868    -43.46
                        H15      0.6036    0.8736   -0.4046    1.0618     55.36
                        H25      0.5894    0.8742   -0.2277    1.0544     56.01


            THYMINE     N1       0.5852   -0.4188    0.1566    0.7197    -35.59
                        C2       0.6053   -0.2901    0.1130    0.6712    -25.61
                        O2       0.7157   -0.2391    0.1057    0.7546    -18.47
                        N3       0.4911   -0.2211    0.0775    0.5386    -24.24
                        C4       0.3618   -0.2690    0.0819    0.4508    -36.63
                        O4       0.2673   -0.1976    0.0474    0.3324    -36.48
                        C5       0.3508   -0.4051    0.1289    0.5358    -49.11
                        ME       0.2135   -0.4650    0.1368    0.5116    -65.34
                        C6       0.4603   -0.4745    0.1641    0.6610    -45.87
                        H3       0.5033   -0.1272    0.0454    0.5191    -14.18
                        H6       0.4503   -0.5686    0.1965    0.7253    -51.62


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