Pymol might expand using all read NMR models.
When I only read 1 model the behaviour is as expected: 5 atoms get selected.

Weird, when reading all NMR models and checking one distance with one of the unexpected 17 atoms selected:

 You clicked /pdb2hgh//A/ZN`191/ZN -> (pk1)
 You clicked /pdb2hgh//A/HIS`129/CE1 -> (pk2)
PyMOL>dist
 Executive: object "dist01" created.

The minimum distance is 3.14 in model 17 out of 20, so it appears as something is wrong.


2006/11/3, Jurgen F. Doreleijers <jurgenfd@gmail.com>:
Hi all,

On PDB entry 2hgh try:
PyMOL>select s,(resi 191 & name zn) expand 2.3
 Selector: selection "s" defined with 17 atoms.
but I expected only the zn and the 4 coordinating atoms. Can somebody explain why it's including atoms that are further away?

Cheers,
Jurgen
--
Jurgen F. Doreleijers, Ph.D.
BMRB, Univ. of Wisconsin-Madison, WI, USA
mailto: jurgenfd@gmail.com



--
Jurgen F. Doreleijers, Ph.D.
BMRB, Univ. of Wisconsin-Madison, WI, USA
mailto:jurgenfd@gmail.com