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. Author manuscript; available in PMC: 2010 Dec 31.
Published in final edited form as: J Phys Chem B. 2009 Dec 31;113(52):16669–16680. doi: 10.1021/jp9077213

Figure 1. Conformational fluctuations identified by QHA and NMA are based on alternate ways to approximate potential energy surface.

Figure 1

NMA identifies motions in the vicinity of energy minimum, while QHA can identify motions that span distant areas of the energy surface.