A Mechanistic Model for Cooperative Behavior of Co-transcribing RNA Polymerases
Fig 6
The portion of the cylinder that is a dashed line represents the original distance L0 and the current distance L. As the distances decreases from L0 to L, the total amount of twist added to the rod is ϕ. The small increment Δℓi represents a change in length due to RNAP motion by one nucleotide.