Video 1. The bacteriophage λ excisive HJ intermediate.
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DOI: 10.7554/eLife.14313.011
Multiple views of the excisive complex are shown. The complex is stripped of all proteins to illustrate the path of the DNA arms as they loop around the 4-way junction. IHF, Xis, and Int subunits are added individually to the DNA to help visualize their structural and functional roles. The assembly sequence shown is for visualization only; nothing is implied regarding the actual order of addition or assembly during λ excision.