DNA, Z-Form

**Definition:** A left-handed double helix of DNA. Its name derives from its narrow zigzag structure that is the least twisted and thinnest form of DNA. Z-DNA forming regions within the GENOME may play an important role in GENE EXPRESSION REGULATION.

**Tree numbers:** - D13.444.308.574 - G02.111.570.820.486.493 - G05.360.580.493

**Synonyms:** - Left-Handed DNA - Z-DNA