Figure 9. Paranemic Cohesion.

The origin of the motif is shown at the left, where a red and a blue double helix exchange strands at every point, that they come in contact, to produce purple crossovers. The covalent strand structure is shown to the right of the identity sign, where a red and a blue double helix are seen to inter-wrap. The paranemic relationship of the inter-wrapped helices is emphasized on the right where the blue and red helices are capped in hairpin loops.