Chain identifier should be blank not A: ATOM 6721 P AMP A 900 26.525 -2.481 33.669 1.00 17.73 P Unknown residue AMP: ATOM 6721 P AMP 900 26.525 -2.481 33.669 1.00 17.73 P Chain identifier should be blank not A: ATOM 6722 O1P AMP A 900 25.240 -1.897 34.073 1.00 18.63 O Unknown residue AMP: ATOM 6722 O1P AMP 900 25.240 -1.897 34.073 1.00 18.63 O Chain identifier should be blank not A: ATOM 6723 O2P AMP A 900 27.328 -1.569 32.797 1.00 20.97 O Unknown residue AMP: ATOM 6723 O2P AMP 900 27.328 -1.569 32.797 1.00 20.97 O Chain identifier should be blank not A: ATOM 6724 O3P AMP A 900 26.391 -3.880 33.102 1.00 18.68 O Unknown residue AMP: ATOM 6724 O3P AMP 900 26.391 -3.880 33.102 1.00 18.68 O Chain identifier should be blank not A: ATOM 6725 O5' AMP A 900 27.326 -2.634 35.075 1.00 16.50 O Unknown residue AMP: ATOM 6725 O5' AMP 900 27.326 -2.634 35.075 1.00 16.50 O Chain identifier should be blank not A: ATOM 6726 C5' AMP A 900 27.800 -1.450 35.768 1.00 14.78 C Unknown residue AMP: ATOM 6726 C5' AMP 900 27.800 -1.450 35.768 1.00 14.78 C Chain identifier should be blank not A: ATOM 6727 C4' AMP A 900 28.022 -1.881 37.230 1.00 16.24 C Unknown residue AMP: ATOM 6727 C4' AMP 900 28.022 -1.881 37.230 1.00 16.24 C Chain identifier should be blank not A: ATOM 6728 O4' AMP A 900 26.719 -2.148 37.872 1.00 15.65 O Unknown residue AMP: ATOM 6728 O4' AMP 900 26.719 -2.148 37.872 1.00 15.65 O Chain identifier should be blank not A: ATOM 6729 C3' AMP A 900 28.906 -3.292 37.368 1.00 15.22 C Unknown residue AMP: ATOM 6729 C3' AMP 900 28.906 -3.292 37.368 1.00 15.22 C Chain identifier should be blank not A: ATOM 6730 O3' AMP A 900 30.359 -2.901 37.308 1.00 19.61 O Unknown residue AMP: ATOM 6730 O3' AMP 900 30.359 -2.901 37.308 1.00 19.61 O Chain identifier should be blank not A: ATOM 6731 C2' AMP A 900 28.377 -3.715 38.823 1.00 16.56 C Unknown residue AMP: ATOM 6731 C2' AMP 900 28.377 -3.715 38.823 1.00 16.56 C Chain identifier should be blank not A: ATOM 6732 O2' AMP A 900 29.013 -3.001 39.863 1.00 18.48 O Unknown residue AMP: ATOM 6732 O2' AMP 900 29.013 -3.001 39.863 1.00 18.48 O Chain identifier should be blank not A: ATOM 6733 C1' AMP A 900 26.832 -3.220 38.832 1.00 15.24 C Unknown residue AMP: ATOM 6733 C1' AMP 900 26.832 -3.220 38.832 1.00 15.24 C Chain identifier should be blank not A: ATOM 6734 N9 AMP A 900 25.901 -4.327 38.449 1.00 14.77 N Unknown residue AMP: ATOM 6734 N9 AMP 900 25.901 -4.327 38.449 1.00 14.77 N Chain identifier should be blank not A: ATOM 6735 C8 AMP A 900 25.728 -4.942 37.190 1.00 13.38 C Unknown residue AMP: ATOM 6735 C8 AMP 900 25.728 -4.942 37.190 1.00 13.38 C Chain identifier should be blank not A: ATOM 6736 N7 AMP A 900 24.813 -5.931 37.103 1.00 13.20 N Unknown residue AMP: ATOM 6736 N7 AMP 900 24.813 -5.931 37.103 1.00 13.20 N Chain identifier should be blank not A: ATOM 6737 C5 AMP A 900 24.367 -5.938 38.428 1.00 13.48 C Unknown residue AMP: ATOM 6737 C5 AMP 900 24.367 -5.938 38.428 1.00 13.48 C Chain identifier should be blank not A: ATOM 6738 C6 AMP A 900 23.383 -6.748 39.077 1.00 11.73 C Unknown residue AMP: ATOM 6738 C6 AMP 900 23.383 -6.748 39.077 1.00 11.73 C Chain identifier should be blank not A: ATOM 6739 N6 AMP A 900 22.709 -7.700 38.340 1.00 11.81 N Unknown residue AMP: ATOM 6739 N6 AMP 900 22.709 -7.700 38.340 1.00 11.81 N Chain identifier should be blank not A: ATOM 6740 N1 AMP A 900 23.181 -6.493 40.433 1.00 11.01 N Unknown residue AMP: ATOM 6740 N1 AMP 900 23.181 -6.493 40.433 1.00 11.01 N Chain identifier should be blank not A: ATOM 6741 C2 AMP A 900 23.865 -5.547 41.119 1.00 12.72 C Unknown residue AMP: ATOM 6741 C2 AMP 900 23.865 -5.547 41.119 1.00 12.72 C Chain identifier should be blank not A: ATOM 6742 N3 AMP A 900 24.814 -4.733 40.588 1.00 13.57 N Unknown residue AMP: ATOM 6742 N3 AMP 900 24.814 -4.733 40.588 1.00 13.57 N Chain identifier should be blank not A: ATOM 6743 C4 AMP A 900 25.019 -4.978 39.260 1.00 13.87 C Unknown residue AMP: ATOM 6743 C4 AMP 900 25.019 -4.978 39.260 1.00 13.87 C 1