pymol-users

[PyMOL] FInd the number of residues within a selection

[Anasuya D. <an...@mb...>]

Hello,

I wanted to know what is the command-line syntax for finding out the number of
residues which fall within a selection made in PyMOL.

Once the selection is made, the command line shows the number of atoms selected,
but I wanted to know the number of residues present in such subsequent
selections.

Can I do this by counting the number of CA atoms in each of my selections? Which
command do I use to count the number of CA within a selection?
I am aware that: count_atoms <sele> gives the number of atoms within a selection.

Please help on how to do this with respect to amino-acid residues.

- Thanks


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

Re: [PyMOL] FInd the number of residues within a selection

[Thomas H. <sp...@us...>]

Hi Anasuya,

what you need is:

count_atoms byca (sele)

Cheers,
   Thomas

Anasuya Dighe wrote, On 05/02/12 19:27:
> Hello,
> 
> I wanted to know what is the command-line syntax for finding out the number of
> residues which fall within a selection made in PyMOL.
> 
> Once the selection is made, the command line shows the number of atoms selected,
> but I wanted to know the number of residues present in such subsequent
> selections.
> 
> Can I do this by counting the number of CA atoms in each of my selections? Which
> command do I use to count the number of CA within a selection?
> I am aware that: count_atoms <sele> gives the number of atoms within a selection.
> 
> Please help on how to do this with respect to amino-acid residues.
> 
> - Thanks

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