Table 2. Mean Value and Root-Mean-Square Fluctuation of Peptide Bond Dipole Moments (in D) in Different Secondary Structures from MD Simulations of Six Proteins Using the Drude-2013 and CHARMM36 Force Fields.

	peptide bonds in helices		peptide bonds in sheets
	mean	fluctuation	mean	fluctuation
Drude-2013	4.74	0.31	5.14	0.30
CHARMM36	3.82	0.11	3.71	0.09