DNA, Cruciform

**Definition:** A cross-shaped DNA structure that can be observed under the electron microscope. It is formed by the incomplete exchange of strands between two double-stranded helices or by complementary INVERTED REPEAT SEQUENCES that refold into hairpin loops on opposite strands across from each other.

**Tree numbers:** - D13.444.308.295 - G02.111.570.820.486.325 - G05.360.580.325

**Synonyms:** - Cruciform DNA - Holliday Junction DNA - Holliday Junctions - DNA Cruciforms