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[ccp4bb]: refmac5

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    Dear CCP4bb members

    I am refining a structure which contains several zinc ions and one
of them is sitting on
    a two fold axis. I have set its occ to 0.5.

    When I try to refine it using refmac5, the position for this atom is
shifted, pushing it apart from
its symmetry related atom.

    Is there anyway to avoid this problem?

    Thanks everybody!



    M. Cristina Nonato, PhD
    Dep. Chemistry and Chemical Biology
    Cornell University
    Ithaca NY 14850

    phone: +1.607.255.6145
    fax:      +1.607.255.1253