. Author manuscript; available in PMC: 2014 Mar 1.

Published in final edited form as: J Mol Graph Model. 2013 Jan 5;40:48–53. doi: 10.1016/j.jmgm.2012.12.012

Table 1.

Krebs and Gerstein [2] classification of the types of macromolecular motions

Motion type	Description
I	Motions of fragments smaller than domains
A	Motion is predominantly shear
B	Motion is predominantly hinge
C	Motion can not be fully classified at present
D	Motion is not hinge or shear
II	Domain motions
A	Motion is predominantly shear
B	Motion is predominantly hinge
C	Motion can not be fully classified at present
D	Motion is not hinge or shear
III	Larger movements than domain movements involving the motion of subunits
A	Motion involves an allosteric transition
B	Motion does not involve an allosteric transition
C	Complex protein motions