Hi James,

The menu action uses the "dss" command, so the result should be exactly 
the same.

Remove loops:
PyMOL> remove not ss H+S

There are several h_bond settings which tune the dss command:
PyMOL>grepset h_bond
h_bond_cone          : 180.00000
h_bond_cutoff_center : 3.60000
h_bond_cutoff_edge   : 3.20000
h_bond_exclusion     : 3
h_bond_from_proton   : on
h_bond_max_angle     : 63.00000
h_bond_power_a       : 1.60000
h_bond_power_b       : 5.00000

Alternative to "dss" is to use external applications like "dssp" or 
"stride". You can run them within PyMOL if you install a plugin: 
http://pymolwiki.org/index.php/Dssp_stride

Cheers,
   Thomas

James Starlight wrote, On 03/08/12 09:43:
> Dear PyMol users!
> 
> I'm working with the big pdb ensemble wich lack information about the 
> secondary structure ( deleated header region)
> 
> I want to find possible way to assign secondary structure for all pdb's 
> in my ensemble ( like A-> assign sec.str for specified pdb). Finally I 
> want to deleate some common SS region is the whole insemble -e.g all 
> loops etc.
> 
> I've already found command wich can do that i want- dss but assignment 
> done by that command is less correct than the above method ( via contex 
> meny) wich i use for specified structure.
> 
> Is there any alternatives?
> 
> Thanks for help,
> 
> James

-- 
Thomas Holder
MPI for Developmental Biology
Spemannstr. 35
D-72076 Tübingen

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