Figure 2From: Efficient calculation of exact probability distributions of integer features on RNA secondary structuresAn example for introducing the definition of d 5ʹ - 3ʹ. The red arch represents the 5ʹ - 3ʹ distance, in this case, we have d5ʹ -3ʹ = c ext + h ext = 3 + 8 = 11.Back to article page