






                                            TABLE








                 Cartesian and cylindrical polar coordinates of atoms in a            

              dinucleotide in the Z-form of poly d(As4T). poly d(As4T).               

              The coordinates of the diadically related dinucleotide in the           

              antiparallel chain are given by r, -phi, -z.  Successive                

              dinucleotides can be generated by adding multiples of -51.4             

              degrees to phi and the same multiple of 0.7571 nm to z.                 
1




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


            PHOSPHATE   P       -0.0362    0.6262    0.6287    0.6272     93.31
                        O1      -0.1824    0.6327    0.6065    0.6585    106.08
                        O2       0.0118    0.6737    0.7604    0.6738     89.00
                        O3       0.0153    0.4768    0.6035    0.4770     88.16
                        O5       0.0393    0.7057    0.5121    0.7068     86.81


            SUGAR       C1       0.3276    0.7148    0.1997    0.7863     65.38
                        C2       0.2367    0.7296    0.0781    0.7670     72.02
                        C3       0.0954    0.7154    0.1343    0.7218     82.41
                        C4       0.1084    0.7458    0.2836    0.7537     81.73
                        C5       0.0180    0.6660    0.3754    0.6663     88.45
                        O4       0.2468    0.7142    0.3163    0.7556     70.93
                        H1       0.3943    0.8009    0.2058    0.8926     63.79
                        H12      0.2565    0.6480    0.0086    0.6969     68.40
                        H22      0.2493    0.8293    0.0359    0.8660     73.27
                        H3       0.0630    0.6122    0.1209    0.6154     84.12
                        H4       0.0926    0.8523    0.3005    0.8573     83.80
                        H15      0.0398    0.5598    0.3645    0.5612     85.93
                        H25     -0.0861    0.6837    0.3482    0.6891     97.18


            ADENINE     N1       0.3132    0.2013    0.1900    0.3723     32.73
                        C2       0.2175    0.2940    0.1894    0.3657     53.50
                        N3       0.2287    0.4249    0.1920    0.4826     61.71
                        C4       0.3584    0.4619    0.1958    0.5846     52.19
                        C5       0.4668    0.3789    0.1970    0.6013     39.07
                        C6       0.4418    0.2408    0.1939    0.5031     28.60
                        N6       0.5386    0.1480    0.1946    0.5585     15.37
                        N7       0.5843    0.4527    0.2012    0.7392     37.77
                        C8       0.5439    0.5759    0.2024    0.7922     46.64
                        N9       0.4081    0.5895    0.1993    0.7170     55.30
                        H2       0.1239    0.2590    0.1865    0.2871     64.44
                        H16      0.5147    0.0509    0.1922    0.5173      5.65
                        H26      0.6346    0.1759    0.1974    0.6585     15.49
                        H8       0.6065    0.6539    0.2054    0.8919     47.15


            PHOSPHATE   P       -0.1399    0.7459    0.0268    0.7589    100.63
                        O1      -0.2068    0.6849    0.1439    0.7155    106.80
                        O2      -0.2159    0.8516   -0.0437    0.8785    104.23
                        O3       0.0032    0.8027    0.0702    0.8027     89.77
                        O5      -0.0984    0.6314   -0.0769    0.6390     98.86


            SUGAR       C1      -0.0667    0.2775   -0.2032    0.2854    103.52
                        C2      -0.1388    0.2944   -0.0699    0.3255    115.24
                        C3      -0.2537    0.3876   -0.1084    0.4633    123.20
                        C4      -0.1993    0.4691   -0.2258    0.5097    113.02
                        C5      -0.1745    0.6161   -0.1982    0.6404    105.81
                        O4      -0.0748    0.4048   -0.2654    0.4116    100.47
                        H1      -0.1176    0.2016   -0.2627    0.2334    120.26
                        H12     -0.0734    0.3448    0.0012    0.3525    102.02
                        H22     -0.1792    0.1985   -0.0374    0.2674    132.07
                        H3      -0.2873    0.4552   -0.0298    0.5383    122.26
                        H4      -0.2662    0.4589   -0.3112    0.5305    120.12
                        H15     -0.2699    0.6678   -0.1880    0.7203    112.01
                        H25     -0.1194    0.6599   -0.2815    0.6706    100.25


            THYMINE     N1       0.0772    0.2413   -0.1893    0.2534     72.27
                        C2       0.1090    0.1078   -0.1955    0.1533     44.69
                        O2       0.0255    0.0205   -0.2116    0.0327     38.77
                        N3       0.2432    0.0782   -0.1822    0.2555     17.82
                        C4       0.3456    0.1688   -0.1637    0.3846     26.02
                        S4       0.5059    0.1232   -0.1485    0.5207     13.69
                        C5       0.3024    0.3064   -0.1585    0.4305     45.38
                        ME       0.4075    0.4115   -0.1386    0.5792     45.28
                        C6       0.1725    0.3381   -0.1711    0.3795     62.97
                        H3       0.2687   -0.0185   -0.1864    0.2693     -3.93
                        H6       0.1448    0.4341   -0.1672    0.4576     71.56


            --------------------------------------------------------------------
