==> to-replace.pdb <==
ATOM      1  N1    A 2  27     300.402 273.627 303.188  1.00 99.99           N  
ATOM      2  C2    A 2  27     301.420 273.163 302.431  1.00 99.99           C  
ATOM      3  N3    A 2  27     301.405 272.750 301.159  1.00 99.99           N  
ATOM      4  C4    A 2  27     300.171 272.846 300.645  1.00 99.99           C  
ATOM      5  C5    A 2  27     299.017 273.304 301.292  1.00 99.99           C  
ATOM      6  C6    A 2  27     299.185 273.708 302.635  1.00 99.99           C  
ATOM      7  N6    A 2  27     298.151 274.171 303.375  1.00 99.99           N  
ATOM      8  N7    A 2  27     297.912 273.271 300.467  1.00 99.99           N  
ATOM      9  C8    A 2  27     298.397 272.795 299.330  1.00 99.99           C  
ATOM     10  N9    A 2  27     299.741 272.523 299.377  1.00 99.99           N  

==> triple-ACA.pdb <==
ATOM      1  P     A 2  27     295.653 270.783 300.135  1.00119.29           P  
ATOM      2  C5'   A 2  27     297.608 269.806 298.646  1.00124.09           C  
ATOM      3  O5'   A 2  27     296.498 270.692 298.778  1.00116.84           O  
ATOM      4  C4'   A 2  27     298.604 270.387 297.645  1.00125.53           C  
ATOM      5  O4'   A 2  27     298.623 271.795 297.821  1.00112.51           O  
ATOM      6  C3'   A 2  27     300.051 269.848 297.754  1.00131.59           C  
ATOM      7  O3'   A 2  27     300.320 268.757 296.859  1.00136.80           O  
ATOM      8  C2'   A 2  27     300.821 271.136 297.406  1.00123.34           C  
ATOM      9  O2'   A 2  27     300.873 271.377 296.000  1.00126.16           O  
ATOM     10  C1'   A 2  27     299.944 272.209 298.072  1.00120.15           C  

==> triple-ACA_rpl.pdb <==
ATOM      1  P     A 2  27     295.653 270.783 300.135  1.00119.29           P  
ATOM      2  C5'   A 2  27     297.608 269.806 298.646  1.00124.09           C  
ATOM      3  O5'   A 2  27     296.498 270.692 298.778  1.00116.84           O  
ATOM      4  C4'   A 2  27     298.604 270.387 297.645  1.00125.53           C  
ATOM      5  O4'   A 2  27     298.623 271.795 297.821  1.00112.51           O  
ATOM      6  C3'   A 2  27     300.051 269.848 297.754  1.00131.59           C  
ATOM      7  O3'   A 2  27     300.320 268.757 296.859  1.00136.80           O  
ATOM      8  C2'   A 2  27     300.821 271.136 297.406  1.00123.34           C  
ATOM      9  O2'   A 2  27     300.873 271.377 296.000  1.00126.16           O  
ATOM     10  C1'   A 2  27     299.944 272.209 298.072  1.00120.15           C  
DONE!