Structural and functional studies of a large winged Z-DNA-binding domain of Danio rerio protein kinase PKZ
Subramani, V.K., Kim, D., Yun, K., Kim, K.K.(2016) FEBS Lett 590: 2275-2285
- PubMed: 27265117 
- DOI: https://doi.org/10.1002/1873-3468.12238
- Primary Citation of Related Structures:  
5J6X - PubMed Abstract: 
The Z-DNA-binding domain of PKZ from zebrafish (Danio rerio; drZαPKZ ) contains the largest β-wing among known Z-DNA-binding domains. To elucidate the functional implication of the β-wing, we solved the crystal structure of apo-drZαPKZ . Structural comparison with its Z-DNA-bound form revealed a large conformational change within the β-wing during Z-DNA binding. Biochemical studies of protein mutants revealed that two basic residues in the β-wing are responsible for Z-DNA recognition as well as fast B-Z transition. Therefore, the extra basic residues in the β-wing of drZαPKZ are necessary for the fast B-Z transition activity.
Organizational Affiliation: 
Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Korea.