Z-DNA
left-handed double helical structure of DNA in which the helix winds to the left in a zigzag pattern
en-GB/zɛd - ˌdiːˌɛnˈeɪ/
en-US/ˈzi - ˌdiˌɛˌneɪ/
left-handed double helical structure of DNA in which the helix winds to the left in a zigzag pattern