2RVC image
Entry Detail
PDB ID:
2RVC
Keywords:
DNA BINDING PROTEIN
Title:
Solution structure of Zalpha domain of goldfish ZBP-containing protein kinase
Biological Source:
Source Organism:
Carassius auratus
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2015-07-08
Release Date:
2016-02-03
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
100
Conformers Submitted:
10
Selection Criteria:
structures with the lowest energy
2RVC validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Interferon-inducible and double-stranded-dependent eIF-2kinase
Chain IDs:A
Chain Length:64
Number of Molecules:1
Biological Source:Carassius auratus
UniProt ID:Q7T2M9 Pfam ID:PF02295
Ligand Molecules
NA
Primary Citation
Solution 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.
Nucleic Acids Res. 44 2936 2948 (2016)
PMID: 26792893 DOI: 10.1093/nar/gkw025

Abstact

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.

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Primary Citation of related structures
2RVC