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Structure and Formation of Z-DNA and Z-RNA.

ABSTRACT: Despite structural differences between the right-handed conformations of A-RNA and B-DNA, both nucleic acids adopt very similar, left-handed Z-conformations. In contrast to their structural similarities and sequence preferences, RNA and DNA exhibit differences in their ability to adopt the Z-conformation regarding their hydration shells, the chemical modifications that promote the Z-conformation, and the structure of junctions connecting them to right-handed segments. In this review, we highlight the structural and chemical properties of both Z-DNA and Z-RNA and delve into the potential factors that contribute to both their similarities and differences. While Z-DNA has been extensively studied, there is a gap of knowledge when it comes to Z-RNA. Where such information is lacking, we try and extend the principles of Z-DNA stability and formation to Z-RNA, considering the inherent differences of the nucleic acids.

SUBMITTER: Krall JB

PROVIDER: S-EPMC9867160 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Structure and Formation of Z-DNA and Z-RNA.

Krall Jeffrey B JB Nichols Parker J PJ Henen Morkos A MA Vicens Quentin Q Vögeli Beat B

Molecules (Basel, Switzerland) 20230114 2

Despite structural differences between the right-handed conformations of A-RNA and B-DNA, both nucleic acids adopt very similar, left-handed Z-conformations. In contrast to their structural similarities and sequence preferences, RNA and DNA exhibit differences in their ability to adopt the Z-conformation regarding their hydration shells, the chemical modifications that promote the Z-conformation, and the structure of junctions connecting them to right-handed segments. In this review, we highligh ...[more]

PMID: 36677900

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