Andrew

The default libraries installed at LMB are for the latest refmac/libcheck,
which use PDB v3 names for nucleotides (ie with primes), for both refmac
and coot

The older libraries are around somewhere

I get extremely confused by this sort of thing

Phil

> Hi Ian,
>
> This is bizarre, we also have 6.1.13 installed here, but in my ADN.cif
> (dated Oct 29 2008) the atom names have primes, but are surrounded by
> quotes which I think allows a mechanism for them to be converted to a
> * if you have the appropriate changes listed in your (personal) library.
>
> I don't understand why these differ (unless Phil change the ADN.cif
> entry here for some reason).
>
> I think we need a comment for the library people !
>
> Cheers
>
> Andrew
>
>
> On 15 Mar 2011, at 14:23, Ian Clifton wrote:
>
>> On 15/03/11 12:57, A Leslie wrote:
>> …
>>>
>>> I then try using LIBCHECK standalone to get the PDB file. I get the
>>> same error if I use the FILE_CIF input keyword and give it the
>>> filename for ADN.cif, no surprise, as this is (I assume) what COOT
>>> does.
>>>
>>> I then copy over ADN.cif to my local directory, run LIBCHECK again
>>> and
>>> use the FILE_L keyword to specify the (local) ADN.cif file. I then
>>> get
>>> the error:
>>>
>>>   ERR: item _chem_comp_tree.atom_id :O2'  not found in the atom list
>>>   MON,BLOCK :ADN     data_comp_ADN
>>>
>>> suggesting that there is an error in ADN.cif !
>>>
>>
>> I can’t reproduce this (CCP4-6.1.13), but I’m immediately suspicious
>> of
>> the apostrophe (U+0027) character in the error message. I’m not a DNA
>> dabbler, so I can’t help much, but I bet the problem is due to
>> “primed”
>> atom names being replaced by stars, or something else. In my CCP4
>> distribution, the atom names are starred in the dictionary file for
>> ADN.
>> In official PDB files, they’re primed I think.
>> --
>> Best wishes,
>> Ian.
>

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