[PyMOL] selection around

[Bronwyn Carlisle]

Hi, we're trying to figure out how close two subunits of a protein are 
to each other.  We've done select <residuesXYZ> around 6 and got one 
residue from the other subunit, but then when we reverse the process 
using the found residue we don't pick up anything on the first subunit. 
 I did a bit of experimenting to see exactly what was being picked up, 
and it turned out the first select was catching just one atom of the 
residue in the other subunit.  So then I did select <that atom> around 
6 but still didn't pick up anything on the first subunit.  Does that 
make sense?  I know what I mean anyhow.  So what exactly is pymol 
measuring when it does a <select ... around> thing?

Bronwyn
Bronwyn Carlisle
Biochemistry Department
University of Otago
Dunedin
New Zealand

Tel 64 3 479 7704