[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