On 04/20/2015 03:44 PM, Robert Hanson wrote:
> how unusual! I will look into it. Definitely a bug. I can't imagine why it
> is doing that....
>
It looks like I should have been more precise in my description.

The mmCIF data were actually loaded from a variable and not from a file. 
This is the case because it was generated on the fly within Jmol.
In the documentation I couldn't find the syntax describing how to save a 
variable into a file, so  I couldn't test it. But now I have found it 
again (misplaced as command '141.12' right before the index) and tried 
to load the saved data actually from a file and the chain ids seem to be 
loaded correctly now.

There is also another difference:

Loaded from a variable no bonds encoded in the mmCIF were loaded 
(setting: set autobond off).
Loaded from a file bonds are loaded. But there seems to be a limit to 
load 21 bonds per atom (similarly to the problem with PDB files that was 
solved a few months ago).

I first thought that there might be a syntax problem with the bond 
descriptions in the mmCIF data. But now it looks like it is rather a 
problem with loading from a variable.

---- mmCIF bond columns ---------------
loop_
_struct_conn.id
_struct_conn.conn_type_id
_struct_conn.ptnr1_auth_asym_id
_struct_conn.ptnr1_auth_atom_id
_struct_conn.ptnr1_auth_comp_id
_struct_conn.ptnr1_auth_seq_id
_struct_conn.ptnr2_auth_asym_id
_struct_conn.ptnr2_auth_atom_id
_struct_conn.ptnr2_auth_comp_id
_struct_conn.ptnr2_auth_seq_id
1 covale 1 U UNK_UNK 1 1 U UNK_UNK 2
2 covale 2 U UNK_UNK 249 2 U UNK_UNK 250
3 covale 1 U UNK_UNK 3 1 U UNK_UNK 2
---------------------------------------

The residue names are not supposed to mean anything. Just testing here 
for longer residue names with underscore.

Regards,
Rolf
-- 

Rolf Huehne
Postdoc

Leibniz Institute for Age Research - Fritz Lipmann Institute (FLI)
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07745 Jena, Germany

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