del HC will delete all hydrogens bonded to carbons (their IDATM types are HC). --Eric Eric Pettersen USCF Computer Graphics Lab On May 9, 2009, at 2:35 PM, Francesco Pietra wrote:

Hi: Is there a command in Chimera to protonate (Sybyl-type) the heteroatoms only (or deprotonate the other elements from a fully protonated protein)? thanks francesco pietra _______________________________________________ Chimera-users mailing list Chimera-users@cgl.ucsf.edu http://www.cgl.ucsf.edu/mailman/listinfo/chimera-users