Fig. 2: Redβ177 and DNA structure.

a The ribbon structure of the Redβ177 helix showing the interaction between protein and DNA (black and white) in a planar conformation. b The cryo-EM map of a single Redβ177 monomer (gray) bound to DNA, with the ribbon structure within it (purple). Close-up views of this monomer c demonstrates the fit of amino acids and nucleotides within the density map.