Hi Enrico, There are several ways to do the same thing. Hiding hydrogens but not deleting (A) menu: Select... Chemistry... element... H Actions... Atoms/Bonds... hide (B) commands: ~display element.H Deleting hydrogens (A) menu: Select... Chemistry... element... H Actions... Atoms/Bonds... delete (B) commands: delete element.H I suggest you try going through a beginner's tutorial, for example: <http://www.cgl.ucsf.edu/Outreach/Tutorials/GettingStarted.html> or the ones in the User's Guide (opened from the Chimera Help menu). Also you can search the documentation, menu Help... Search Documentation. Elaine ----- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Sep 28, 2010, at 3:53 AM, Enrico Morelli wrote:
Dear,
another question. How I can remove or can't display all the protons displayed in chimera?
Thanks
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