Figure 3From: Cruciform structures are a common DNA feature important for regulating biological processesCrystal structure of the E. coli RuvA tetramer in complex with a Holliday junction (PDBID 1C7Y). A) The Holliday junction is depressed at the center where it makes close contacts with RuvA. Each of the arms outside of the junction center takes on a standard beta-DNA conformation B) Rotation of A) by 90°.Back to article page