Those error messages are warnings - not fatal errors - there must be
something else reported in the log file to cause that.

But as Garib says DNA "standard" names vary according to program and year -
see if your atom names are those in the $CLIBD/monomers/g/GUA.cif

That is where REFMAC will find its default dictionary.
Eleanor

On 15 May 2012 16:56, Garib N Murshudov <[email protected]> wrote:

> Dear Vidisha
>
> The easiest way is to convert DNA names to standard pdb v3 names. You can
> do it using molprobity. The probelem is that GUA may have different meaning
> than G (RNA) or DG (DNA).
>
> regards
> Garib
>
> On 15 May 2012, at 16:37, tipu Lall wrote:
>
> Dear CCP4 users,
>
>
> I am a beginner in this field. It would be kind of all of you if can help
> me how to move ahead with my problem.
>
>
> I have an output file from CNS of a binary complex (DNA-protein) and I am
> trying to refine it with refmac5 (restrain refinement) and job is failing
> with error messages (written below)
>
>
> Before restrain refinement, I converted the CNS output file (pdb) from
> Codconv of CCP4 to pdb format.
>
>
> Thanks in advance
> Vidisha
>
>
>   INFO:     link is found (not be used) dist=   3.003 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:C2' .->ch:Ca   res:   2  GUA
> at:O2P .
>   INFO:     link is found (not be used) dist=   2.625 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:C3' .->ch:Ca   res:   2  GUA
> at:P   .
>   INFO:     link is found (not be used) dist=   2.797 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:C3' .->ch:Ca   res:   2  GUA
> at:O2P .
>   INFO:     link is found (not be used) dist=   1.606 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:O3' .->ch:Ca   res:   2  GUA
> at:P   .
>   INFO:     link is found (not be used) dist=   2.499 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:O3' .->ch:Ca   res:   2  GUA
> at:O1P .
>   INFO:     link is found (not be used) dist=   2.504 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:O3' .->ch:Ca   res:   2  GUA
> at:O2P .
>   INFO:     link is found (not be used) dist=   2.507 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:O3' .->ch:Ca   res:   2  GUA
> at:O5' .
>   INFO:     link is found (not be used) dist=   2.843 ideal_dist=   2.400
>             ch:CC   res:   1  GUA      at:O3' .->ch:Ca   res:   2  GUA
> at:C5' .
>   INFO:     link is found (not be used) dist=   2.637 ideal_dist=   2.400
>             ch:Ca   res:   2  GUA      at:C3' .->ch:Cb   res:   3  ADE
> at:P   .
>   INFO:     link is found (not be used) dist=   3.116 ideal_dist=   2.400
>             ch:Ca   res:   2  GUA      at:C3' .->ch:Cb   res:   3  ADE
> at:O1P .
>   INFO:     link is found (not be used) dist=   1.604 ideal_dist=   2.400
>             ch:Ca   res:   2  GUA      at:O3' .->ch:Cb   res:   3  ADE
> at:P   .
>   INFO:     link is found (not be used) dist=   2.504 ideal_dist=   2.400
>             ch:Ca   res:   2  GUA      at:O3' .->ch:Cb   res:   3  ADE
> at:O1P .
>   INFO:     link is found (not be used) dist=   2.514 ideal_dist=   2.400
>             ch:Ca   res:   2  GUA      at:O3' .->ch:Cb   res:   3  ADE
> at:O2P .
>
>
>   ATTENTION: atom:O4   GUA         1  CC   is missing in the structure
>   ATTENTION: atom:O3   GUA         1  CC   is missing in the structure
>   ATTENTION: atom:C3   GUA         1  CC   is missing in the structure
>   ATTENTION: atom:C1   GUA         1  CC   is missing in the structure
>   ATTENTION: atom:O1   GUA         1  CC   is missing in the structure
>   ATTENTION: atom:O2   GUA         1  CC   is missing in the structure
>
>
> ===> Error: Fatal error. Cannot continue
>
>
>
>
> Dr Garib N Murshudov
> Group Leader, MRC Laboratory of Molecular Biology
> Hills Road
> Cambridge
> CB2 0QH UK
> Email: [email protected] <[email protected]>
> Web http://www.mrc-lmb.cam.ac.uk
>
>
>
>
>

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