Fig. 8.

Consecutive steps in the construction of the graph for a jelly roll, from Fig. 3 ▶. Vertices correspond to individual strands, and they are connected by neighbor edges, represented by directed arrows. Domain edges are shown as bold lines. Initially, all neighbor edges are between sequentially consecutive strands, and there are no domain edges. In each successive panel, new domain edges introduced on application of either a folding rule or closure operation are shown in red. (a) Initial graph. (b) Hairpin rule. (c) Closure. (d) Hairpin rule. (e) Closure. (f) Hairpin rule. (g) Indirect β-beta wind. (h) Final graph after removing neighbor edges.