[ccp4bb]

[Herman . Schreuder]

It might be a 50% occupied protein side chain(s), since only one of the
two equivalent protein side chains can occupy this position.

Best Herman


________________________________

                From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK]
On Behalf Of Crystal Xu
                Sent: Monday, November 05, 2012 11:04 AM
                To: CCP4BB@JISCMAIL.AC.UK
                Subject: [ccp4bb]
                
                
                I am sorry that I forget to attach the electron density
map
                
                
                2012/11/5 Crystal Xu <crystalh...@gmail.com>
                

                        Dear all,

                        

                        
                        I am now determining a structure at 2.2 A
resolution. The space group is C2, and there is only one molecular in an
ASU. During the refinement, some weird electron density appears right on
the two-fold axis. Does anyone have any idea what could this be? Thanks
a lot.
                            
                        Best regards
                         
                        Shutong Xu