Peter Stuckey and
Acta Cryst., D70(3), pp.904-906, March 2014
Atomic coordinates in the Worldwide Protein Data Bank (wwPDB) are
generally reported to greater precision than the experimental
structure determinations have actually achieved.
By using information theory & data compression to study the
compressibility of protein atomic coordinates, it is possible
to quantify the amount of randomness in the coordinate data &
thereby to determine the realistic precision of the reported coordinates.
On avg., the value of each C_alpha coordinate in a set of
selected p.structures solved at a variety of resolutions is good to about 0.1A.