Dear Leila, 

stick_ball setting can only be applied to whole object and not atoms for all I know.

So, to do ball (oxygen) and sticks (hydrogen) representations is :

show sticks, solvent 
show spheres, solvent and e. O
set sphered_scale, 0.3, solvent and e. O

You can adjust the size of the sphere with the last setting.

Hope it will help you.


On Sun, Jul 17, 2011 at 1:49 PM, leila karami <> wrote:
Dear pymol users

how to show water molecules as ball and stick representation (O atom: ball and H atoms: stick)?

any help will highly appreciated.

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