Table 1.

Statistics of the number of molecular events monitored during single-molecule roadblock experiments

	MutS, MutL, MutH		MutS, MutLΔ4, MutH
	No RNAP	Stalled RNAP	No RNAP	Stalled RNAP
# of DNA molecules monitored	120	151	49	138
# of DNA molecules with stalled RNAP		109		67
# of DNA molecules incised (despite the presence of stalled RNAP if it is included in the reaction)	67	30	39	0
Mean Twait	430 ± 43 s (SEM, n = 210)	770 ± 90 s (SEM, n = 144)	740 ± 60 s (SEM, n = 244)