Missing P atom in first residues- error

[NARENDRA]

When I run X3DNA I get the following error. I do not have a phosphate group on the first residue, so can this error be ignored?

Residue 3 and 21 are first residues in each strand.

 ...... reading file: baselist.dat ......
missing " P  " atom : residue name   A, chain  , number    3
missing " P  " atom : residue name   A, chain  , number   21

[xiangjun]

Dear NARENDRA,

Thanks for being the first 3DNA user to try out this forum!

No, these are not error messages -- they are there for information only, noting the fact that some atoms are missing from a base residue. In this case, you will find that some backbone torsion angles involving these atoms will be missing from the main output file.

For example, with bdl084, the output will be:

Code: [Select]

Strand I
  base    alpha    beta   gamma   delta  epsilon   zeta    chi
   1 C     ---     ---    -70.0   144.7  -171.8   -98.4  -105.9
   2 G    -69.8  -172.2    43.0   148.1  -151.3  -157.0   -85.4
   3 C    -39.4   130.5    50.1    93.3  -165.4   -81.2  -132.4


HTH,

Xiang-Jun

When I run X3DNA I get the following error. I do not have a phosphate group on the first residue, so can this error be ignored?

Residue 3 and 21 are first residues in each strand.

 ...... reading file: baselist.dat ......
missing " P  " atom : residue name   A, chain  , number    3
missing " P  " atom : residue name   A, chain  , number   21