Characterization of the target DNA sequence for the DNA-binding domain of zinc finger protein 191

Acta Biochim Biophys Sin (Shanghai). 2008 Aug;40(8):704-10.

Abstract

Studies on the DNA-binding properties of transcription factors are important in searching for the downstream genes regulated by these factors. In the present study, we report on the DNA-binding property of a Cys2His2-type transcription factor, zinc finger protein 191 (Zfp191), which has been newly found to play a significant role in mice. By constructing a fusion protein containing the DNA-binding domain of Zfp191, we characterized target DNA by determining the protein's binding specificity and dependence on zinc. The data showed that the DNA-binding domain of Zfp191 can specifically bind to the TCAT repeat motif and that there is a cooperative effect among the target DNA's multiple binding sites. Furthermore, the binding reaction is dependent on zinc. This work provides a foundation for further studies on the role of Zfp191 in gene regulation and development.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Base Sequence
  • Binding Sites / genetics
  • Carrier Proteins / chemistry*
  • Carrier Proteins / genetics
  • Carrier Proteins / metabolism*
  • DNA / genetics*
  • DNA / metabolism*
  • DNA Primers / genetics
  • In Vitro Techniques
  • Kinetics
  • Mice
  • Microsatellite Repeats
  • Protein Binding
  • Protein Structure, Tertiary
  • Recombinant Fusion Proteins / chemistry
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / metabolism
  • Zinc Fingers*

Substances

  • Carrier Proteins
  • DNA Primers
  • Recombinant Fusion Proteins
  • Zfp24 protein, mouse
  • DNA