+ gliptranx(j,i)=0.0d0
+ gradafm(j,i)=0.0d0
+ grad_shield(j,i)=0.0d0
+C grad_shield_side is Cbeta sidechain gradient
+ do kk=1,maxshieldlist
+ grad_shield_side(j,kk,i)=0.0d0
+ grad_shield_loc(j,kk,i)=0.0d0
+
+C grad_shield_side_ca is Calfa sidechain gradient
+
+
+C grad_shield_side_ca(j,kk,i)=0.0d0
+ enddo