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Definition of the binding-sites of individual zinc fingers in the transcription factor-IIIA-5S RNA gene-complex

Academic Article
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Overview

authors

  • Clemens, K. R.
  • Liao, X. B.
  • Wolf, V.
  • Wright, Peter
  • Gottesfeld, Joel

publication date

  • November 1992

journal

  • Proceedings of the National Academy of Sciences of the United States of America  Journal

abstract

  • A series of polypeptides containing increasing numbers of zinc fingers of Xenopus transcription factor IIIA has been generated and binding to the 5S RNA gene internal control region has been studied in order to elucidate the mode of interaction of the individual fingers with DNA. By using a combination of DNase I footprinting, methylation interference, and differential binding to mixtures of DNA fragments differing in length by single base pairs, the binding sites for individual fingers have been defined. These results have led to a model for the interaction of transcription factor IIIA with the internal control region in which fingers 1-3 bind in the major groove of the promoter C block, fingers 7-9 bind in the major groove of the A block, and finger 5 binds in the major groove of the intermediate element. Fingers 4 and 6 each bind across the minor groove, spanning these promoter elements.

subject areas

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Binding Sites
  • Cloning, Molecular
  • DNA, Ribosomal
  • Escherichia coli
  • Methylation
  • Models, Structural
  • Molecular Sequence Data
  • Nucleic Acid Conformation
  • Oligodeoxyribonucleotides
  • Polymerase Chain Reaction
  • Protein Conformation
  • RNA, Ribosomal, 5S
  • Restriction Mapping
  • Transcription Factor TFIIIA
  • Transcription Factors
  • Xenopus
  • Zinc Fingers
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Identity

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.89.22.10822

PubMed ID

  • 1438283
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Additional Document Info

start page

  • 10822

end page

  • 10826

volume

  • 89

issue

  • 22

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