Table 1.

Charges of the nucleobase atoms in the revised force field

Base	Atom	Charges
		AMBER ff14	Revised
C	N4	−0.9530	−0.8716
	H41/H42	+0.4234	+0.3827
U	N3	−0.3549	−0.3913
	H3	+0.3154	+0.3518
G	N1	−0.4787	−0.5606
	H1	+0.3424	+0.4243
	N2	−0.9672	−1.0158
	H21/H22	+0.4364	+0.4607
A	N1	−0.7615	−0.7969
	H2	+0.0473	+0.0650
	N6	−0.9019	−1.0088
	H61/H62	+0.4115	+0.4738

Unlisted atoms have unchanged charges.