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Recognition Code of ZNF191(243-368) and Its Interaction with DNA
Dongxin Zhao1, Zhongxian Huang2
1School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
Bioinorganic Chemistry and Applications
|October 13, 2015
Summary
The ZNF191(243-368) protein region selectively binds DNA sequences containing an AGGG core. Further research is needed to fully understand the recognition mechanism of Cys2His2 zinc finger proteins.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- The ZNF191(243-368) protein is the C-terminal region of ZNF191.
- It contains a putative DNA-binding domain with four Cys2His2 zinc finger motifs.
Purpose of the Study:
- To investigate the protein-DNA binding reaction of the ZNF191(243-368) region.
- To characterize the binding specificity of the zinc finger domain.
Main Methods:
- Construction and transformation of an expression vector for a glutathione-S-transferase (GST) fusion protein (GST-ZNF191(243-368)) into Escherichia coli BL21.
- Expression of the fusion protein.
- Affinity selection strategy to analyze protein-DNA binding.
Main Results:
- The ZNF191(243-368) region selectively binds to DNA sequences.
- Binding occurs with sequences containing an AGGG core.
- The fusion protein GST-ZNF191(243-368) was successfully expressed.
Conclusions:
- ZNF191(243-368) demonstrates specific DNA binding capabilities, particularly to sequences with an AGGG core.
- The precise recognition mechanism of Cys2His2 zinc finger proteins requires additional investigation.
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