Translation, libration, and screw-axis motions of NCP elements

Translation, libration, and screw-axis motions of NCP elements 

The NCP is a dynamic structure, even within the crystal. The diffraction from an NCP crystal is affected by disorder or motions of subunits, the individual amino 

Within the NCP we have defined a number of subgroups for this 

When TLS refinement is applied to the tetramer subunit, the resulting libration is less easy to interpret, and much less correlated with an intranucleosomal element. The center of motion for the tetramer shifts away from the dyad axis 

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