Download MendeleySolution structure of the Z-DNA binding domain of PKR-like protein kinase from Carassius auratus and quantitative analyses of the intermediate complex during B-Z transition.
Lee, A.R., Park, C.J., Cheong, H.K., Ryu, K.S., Park, J.W., Kwon, M.Y., Lee, J., Kim, K.K., Choi, B.S., Lee, J.H.(2016) Nucleic Acids Res 44: 2936-2948
- PubMed: 26792893
- DOI: https://doi.org/10.1093/nar/gkw025
- Primary Citation of Related Structures:
2RVC - PubMed Abstract:
Z-DNA binding proteins (ZBPs) play important roles in RNA editing, innate immune response and viral infection. Structural and biophysical studies show that ZBPs initially form an intermediate complex with B-DNA for B-Z conversion. However, a comprehensive understanding of the mechanism of Z-DNA binding and B-Z transition is still lacking, due to the absence of structural information on the intermediate complex. Here, we report the solution structure of the Zα domain of the ZBP-containing protein kinase from Carassius auratus(caZαPKZ). We quantitatively determined the binding affinity of caZαPKZ for both B-DNA and Z-DNA and characterized its B-Z transition activity, which is modulated by varying the salt concentration. Our results suggest that the intermediate complex formed by caZαPKZ and B-DNA can be used as molecular ruler, to measure the degree to which DNA transitions to the Z isoform.
Organizational Affiliation:
Department of Chemistry and RINS, Gyeongsang National University, Gyeongnam 52828, Republic of Korea.
