Table 3 Comparison of sampling frequencies and exact probabilities. Comparison of sampling frequency and exact probability for the four most probable shapes of the pheS-pheT-Attenuator from E. coli; the Spliced Leader of L. collosoma (gb:S76723/1-56) and the leader of the HIV-1 genome (gb:K02013/1-281), all of which are conformational switches. The sample size for each was 1000 and the analyses were repeated 1000 times.

From: Complete probabilistic analysis of RNA shapes