You might want to look at some images of side chain electron density.
http://www.ruppweb.org/garland/gallery/Ch2/index_2.htm BR From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Dialing Pretty Sent: Friday, January 13, 2012 2:22 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] on the electronic density of several maps Dear All, For the electronic density of LEU and Pro in the electronic density map, which is much stronger? For the electronic density of LEU and Lys in the electronic density map, which is much stronger? The reason I ask the above questions is I need to distinguish them in the electronic density map. I am looking forward to getting your reply. Fenghui