Miguel wrote:

why isn't ALY from 1jm4 in the protein set, though it contains the
backbone atoms *.N,*.CA,*.C,*.O
http://www.imb-jena.de/cgi-bin/SCOPlnk.exe?JMOL=1jm4
select [ALY]/1 and (*.N,*.CA,*.C,*.O)



Jan,

This is failing because the N is coming after the CA in the file.

All normal aminoacids have the sequence ordered
N, CA, C, O

ATOM    216  N   GLY B 715 ...
ATOM    217  CA  GLY B 715 ...
ATOM    218  C   GLY B 715 ...
ATOM    219  O   GLY B 715 ...


This has the sequence CA,N,C,O HETATM 74 CA ALY A 50 ... HETATM 75 N ALY A 50 ... HETATM 76 C ALY A 50 ... HETATM 77 O ALY A 50 ...

The current mechanism enforces proper ordering when trying to recognize
special groups.

I suppose we can change this ... but we need to ensure that we don't break
something else.

Let me know what you think.


Hi Miguel,
I would prefer if the ordering is done by a distance algorithm
protein if bound(*.N,*.CA) & bound(*.CA,C) & bound(*.C,*.O) within group;
and this should give less false positive results.
Regards, Jan


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