






                                            TABLE








                 Cartesian and cylindrical polar coordinates of atoms in a            

              nucleotide in the A'-form of poly (I). poly (C).  The coordi-           

              nates of the diadically related nucleotide in the antiparallel          

              chain are given by r, -phi, -z.  Successive nucleotides can be          

              generated by adding multiples of 30.0 degrees to phi and the            

              same multiple of 0.3 nm to z.                                           
1




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


            PHOSPHATE   P        0.3678    0.8983   -0.2678    0.9707     67.73
                        O1       0.2412    0.8253   -0.2912    0.8598     73.71
                        O2       0.4064    0.9964   -0.3717    1.0761     67.81
                        O3       0.3626    0.9706   -0.1252    1.0361     69.52
                        O5       0.4869    0.7937   -0.2459    0.9311     58.47


            RIBOSE      C1       0.7149    0.5239   -0.1018    0.8863     36.23
                        C2       0.7850    0.5025   -0.2356    0.9321     32.62
                        C3       0.7227    0.6189   -0.3124    0.9515     40.57
                        C4       0.7164    0.7280   -0.2056    1.0214     45.46
                        C5       0.6217    0.8429   -0.2340    1.0474     53.59
                        O4       0.6709    0.6579   -0.0863    0.9396     44.44
                        O2       0.9240    0.5230   -0.2172    1.0618     29.51
                        H1       0.7850    0.5049   -0.0206    0.9334     32.75
                        H2       0.7541    0.4083   -0.2809    0.8575     28.43
                        H3       0.6217    0.5934   -0.3444    0.8594     43.67
                        H4       0.8166    0.7671   -0.1876    1.1204     43.21
                        H15      0.6508    0.8919   -0.3269    1.1041     53.88
                        H25      0.6269    0.9153   -0.1527    1.1094     55.59


            INOSINE     N1       0.5511    0.0570   -0.0115    0.5540      5.91
                        C2       0.6770    0.1066   -0.0233    0.6854      8.95
                        N3       0.7060    0.2316   -0.0472    0.7430     18.16
                        C4       0.5954    0.3078   -0.0591    0.6703     27.34
                        C5       0.4652    0.2687   -0.0492    0.5373     30.01
                        C6       0.4338    0.1311   -0.0229    0.4532     16.82
                        O6       0.3239    0.0781   -0.0108    0.3332     13.55
                        N7       0.3810    0.3762   -0.0675    0.5354     44.64
                        C8       0.4642    0.4784   -0.0882    0.6666     45.86
                        N9       0.5936    0.4392   -0.0836    0.7385     36.50
                        H1       0.5419   -0.0408    0.0069    0.5434     -4.31
                        H2       0.7532    0.0426   -0.0130    0.7544      3.24
                        H8       0.4346    0.5724   -0.1051    0.7187     52.79


            CYTOSINE    N1       0.5936    0.4392   -0.0836    0.7385     36.50
                        C2       0.6123    0.3036   -0.0587    0.6835     26.37
                        O2       0.7277    0.2593   -0.0528    0.7725     19.61
                        N3       0.5031    0.2247   -0.0418    0.5510     24.07
                        C4       0.3798    0.2765   -0.0489    0.4698     36.05
                        N4       0.2765    0.1954   -0.0317    0.3386     35.25
                        C5       0.3584    0.4159   -0.0744    0.5490     49.24
                        C6       0.4689    0.4929   -0.0910    0.6803     46.43
                        H14      0.2917    0.0982   -0.0139    0.3078     18.61
                        H24      0.1834    0.2314   -0.0365    0.2953     51.61
                        H5       0.2663    0.4545   -0.0798    0.5268     59.63
                        H6       0.4584    0.5907   -0.1090    0.7477     52.19


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