For such cases I generate the symmetry partners using either the symexp
<http://pymolwiki.org/index.php/Symexp> command or the supercell
<http://pymolwiki.org/index.php/Supercell> script. Both scripts result in
lots of extra objects, which you then have to winnow down to a single
helix. Supercell can be nice since you can specify how man unit cells to
generate along a particular axis and it draws the unit cells.
-Spencer
On Wed, Jan 13, 2016 at 10:35 AM, Lukáš Pravda <xpra...@ncbr.muni.cz> wrote:
> Hi Yeping,
>
>
>
> What is the PDB id you are working with? Perhaps you have to download the
> biological assembly rather than asymmetric unit. I’d suggest you to go to
> the PDBe entry (pdbe.org/PDBID) and from the quick links select download
> ‘Assembly composition XML’. Take a look which assembly id has ‘preferred’
> attribute se to ‘True’ and download corresponding assembly.
>
>
>
> Hope it helps
>
>
>
> Lukas Pravda
>
> Central European Institute of Technology (CEITEC)
>
>
>
> *From:* sunyeping [mailto:sunyep...@aliyun.com]
> *Sent:* Wednesday, January 13, 2016 9:31 AM
> *To:* pymol-users <pymol-users@lists.sourceforge.net>
> *Subject:* [PyMOL] show the long helix filament
>
>
>
>
>
> Dear all,
>
>
>
> I am studying a published protein molecule which was claimed to be helical
> symmetric. The pdb file contain 3 copies of this molecule arranged in
> head-to-tail patern. The author claims that this interation
> is repeated in a directional manner along the P31 screw axis. Does anyone
> know how to show the whole long helix filament rather that just three
> protomer of this molecule? Can pymol do this?
>
>
>
> Best regards.
>
> Yeping Sun
>
> Institute of Microbiology, Chinese Academy of Sciences
>
>
>
>
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