Molecules and Cells

Korean Society for Molecular and Cellular Biology (한국분자세포생물학회)
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ZNF435, a Novel Human SCAN-containing Zinc Finger Protein, Inhibits AP-1-mediated Transcriptional Activation

  • Gu, Xing (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Zheng, Mei (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Fei, Xiangwei (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Yang, Zhenxing (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Li, Fan (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Ji, Chaoneng (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Xie, Yi (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University) ;
  • Mao, Yumin (State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University)
  • Received : 2006.12.21
  • Accepted : 2007.02.23
  • Published : 2007.06.30
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Abstract

Zinc finger transcription factor genes are a significant fraction of the genes in the vertebrate genome. Here we report the isolation and characterization of a human zinc finger-containing gene, ZNF435, from a fetal brain cDNA library. ZNF435 cDNA is 1290 base pairs in length and contains an open reading frame encoding 349 amino acids with four C2H2-type zinc fingers at its carboxyl terminus and a SCAN motif at its amino terminus. RT-PCR results showed that ZNF435 was expressed in all tested tissues. A ZNF435-GFP fusion protein was located in the nucleus and the four zinc fingers acted as nuclear localization signals (NLSs). ZNF435 was found to be capable of homo-association, and this effect was independent of its zinc fingers. Furthermore, ZNF435 proved to be a transcription repressor as its overexpression in AD293 cells inhibited the transcriptional activities of AP-1.

Keywords

Acknowledgement

Supported by : Nature Science Foundation of China

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